WO2015147598A1 - 공중합체 및 이를 포함하는 유기 태양 전지 - Google Patents
공중합체 및 이를 포함하는 유기 태양 전지 Download PDFInfo
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- WO2015147598A1 WO2015147598A1 PCT/KR2015/003059 KR2015003059W WO2015147598A1 WO 2015147598 A1 WO2015147598 A1 WO 2015147598A1 KR 2015003059 W KR2015003059 W KR 2015003059W WO 2015147598 A1 WO2015147598 A1 WO 2015147598A1
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- 125000004185 ester group Chemical group 0.000 claims description 21
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- 125000001424 substituent group Chemical group 0.000 description 11
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- 125000004923 naphthylmethyl group Chemical group C1(=CC=CC2=CC=CC=C12)C* 0.000 description 1
- 125000001971 neopentyl group Chemical group [H]C([*])([H])C(C([H])([H])[H])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 125000006502 nitrobenzyl group Chemical group 0.000 description 1
- QGLKJKCYBOYXKC-UHFFFAOYSA-N nonaoxidotritungsten Chemical compound O=[W]1(=O)O[W](=O)(=O)O[W](=O)(=O)O1 QGLKJKCYBOYXKC-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- WCPAKWJPBJAGKN-UHFFFAOYSA-N oxadiazole Chemical group C1=CON=N1 WCPAKWJPBJAGKN-UHFFFAOYSA-N 0.000 description 1
- 125000002971 oxazolyl group Chemical group 0.000 description 1
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- 230000020477 pH reduction Effects 0.000 description 1
- 238000010422 painting Methods 0.000 description 1
- 125000003538 pentan-3-yl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000001147 pentyl group Chemical group C(CCCC)* 0.000 description 1
- 125000005561 phenanthryl group Chemical group 0.000 description 1
- 125000001484 phenothiazinyl group Chemical group C1(=CC=CC=2SC3=CC=CC=C3NC12)* 0.000 description 1
- 125000004592 phthalazinyl group Chemical group C1(=NN=CC2=CC=CC=C12)* 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 229920000172 poly(styrenesulfonic acid) Polymers 0.000 description 1
- 229920000767 polyaniline Polymers 0.000 description 1
- 239000011112 polyethylene naphthalate Substances 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920000128 polypyrrole Polymers 0.000 description 1
- 229920000166 polytrimethylene carbonate Polymers 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 125000003373 pyrazinyl group Chemical group 0.000 description 1
- 125000001725 pyrenyl group Chemical group 0.000 description 1
- PBMFSQRYOILNGV-UHFFFAOYSA-N pyridazine Chemical group C1=CC=NN=C1 PBMFSQRYOILNGV-UHFFFAOYSA-N 0.000 description 1
- 125000004076 pyridyl group Chemical group 0.000 description 1
- 125000000714 pyrimidinyl group Chemical group 0.000 description 1
- 125000000168 pyrrolyl group Chemical group 0.000 description 1
- 125000002294 quinazolinyl group Chemical group N1=C(N=CC2=CC=CC=C12)* 0.000 description 1
- MCJGNVYPOGVAJF-UHFFFAOYSA-N quinolin-8-ol Chemical compound C1=CN=C2C(O)=CC=CC2=C1 MCJGNVYPOGVAJF-UHFFFAOYSA-N 0.000 description 1
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- 125000002914 sec-butyl group Chemical group [H]C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 125000003548 sec-pentyl group Chemical group [H]C([H])([H])C([H])([H])C([H])([H])C([H])(*)C([H])([H])[H] 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 125000003808 silyl group Chemical group [H][Si]([H])([H])[*] 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052979 sodium sulfide Inorganic materials 0.000 description 1
- GRVFOGOEDUUMBP-UHFFFAOYSA-N sodium sulfide (anhydrous) Chemical compound [Na+].[Na+].[S-2] GRVFOGOEDUUMBP-UHFFFAOYSA-N 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 125000003011 styrenyl group Chemical group [H]\C(*)=C(/[H])C1=C([H])C([H])=C([H])C([H])=C1[H] 0.000 description 1
- 238000010301 surface-oxidation reaction Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- JRMUNVKIHCOMHV-UHFFFAOYSA-M tetrabutylammonium bromide Chemical compound [Br-].CCCC[N+](CCCC)(CCCC)CCCC JRMUNVKIHCOMHV-UHFFFAOYSA-M 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 125000000335 thiazolyl group Chemical group 0.000 description 1
- IZBPOIZFVYLFEP-UHFFFAOYSA-N thieno[2,3-c]thiophene-2-carboxylic acid Chemical compound S1C=C2SC(C(=O)O)=CC2=C1 IZBPOIZFVYLFEP-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- XJDNKRIXUMDJCW-UHFFFAOYSA-J titanium tetrachloride Chemical compound Cl[Ti](Cl)(Cl)Cl XJDNKRIXUMDJCW-UHFFFAOYSA-J 0.000 description 1
- PIILXFBHQILWPS-UHFFFAOYSA-N tributyltin Chemical compound CCCC[Sn](CCCC)CCCC PIILXFBHQILWPS-UHFFFAOYSA-N 0.000 description 1
- PWYVVBKROXXHEB-UHFFFAOYSA-M trimethyl-[3-(1-methyl-2,3,4,5-tetraphenylsilol-1-yl)propyl]azanium;iodide Chemical compound [I-].C[N+](C)(C)CCC[Si]1(C)C(C=2C=CC=CC=2)=C(C=2C=CC=CC=2)C(C=2C=CC=CC=2)=C1C1=CC=CC=C1 PWYVVBKROXXHEB-UHFFFAOYSA-M 0.000 description 1
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 229910001930 tungsten oxide Inorganic materials 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 238000004832 voltammetry Methods 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000004246 zinc acetate Substances 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
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- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R33/00—Arrangements or instruments for measuring magnetic variables
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Definitions
- the present specification relates to a copolymer and an organic solar cell including the same.
- Organic solar cells are devices that can directly convert solar energy into electrical energy by applying the photovoltaic effect.
- Solar cells can be divided into inorganic solar cells and organic solar cells according to the material constituting the thin film.
- Typical solar cells are made of p-n junctions by doping crystalline silicon (Si), an inorganic semiconductor. Electrons and holes generated by absorbing light diffuse to the p-n junction and are accelerated by the electric field to move to the electrode.
- the power conversion efficiency of this process is defined as the ratio of the power given to the external circuit and the solar power entered into the solar cell, and is currently achieved by 24% when measured under standardized virtual solar irradiation conditions.
- organic semiconductor solar cell which is easy to process, cheap and has various functions, has been spotlighted as a long-term alternative energy source.
- An object of the present specification is to provide a copolymer and an organic solar cell including the same.
- the present specification provides a copolymer comprising a unit represented by the following Chemical Formula 1.
- R1 and R2 are the same as or different from each other, and each independently hydrogen; Halogen group; Nitro group; Cyano group; Carboxyl groups; Hydroxyl group; Substituted or unsubstituted carbonyl group; Sulfonyl group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted allyl group; Substituted or unsubstituted alkoxy group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted ester group; Substituted or unsubstituted amide group; Substituted or unsubstituted ether group; Substituted or unsubstituted sulfonyl group; Substituted or unsubstituted sulfoxy group; Substituted or unsubstitute
- R3 and R4 are the same as or different from each other, and each independently hydrogen; Or an electronic drawer,
- A is a substituted or unsubstituted monocyclic or polycyclic aryl group; Or a substituted or unsubstituted monocyclic or polycyclic heterocyclic group including one or more of N, O, S and Se atoms.
- the present specification is one electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode and including a photoactive layer, wherein one or more layers of the organic material layers include the aforementioned copolymer. .
- the copolymer according to an exemplary embodiment of the present specification includes a first unit represented by Formula 1 and a second unit represented by Formula 2, in which a position to be linked is selected, Has regioregular selected.
- Copolymers having regioregularity according to one embodiment of the present specification are relatively excellent in crystallinity.
- the copolymer according to one embodiment of the present specification includes a structure in which two thiophene groups are condensed, thereby inducing high electron density and / or stabilized the resonance structure in the device.
- the copolymer according to an exemplary embodiment of the present specification may be used as an organic material layer of the organic solar cell, and the organic solar cell including the same may exhibit excellent characteristics such as an increase in open voltage and a short circuit current and / or an increase in efficiency.
- the copolymer according to an exemplary embodiment of the present specification may be used alone or in a mixture with other materials in an organic solar cell, and the life of the device may be expected to be improved due to characteristics such as efficiency improvement and thermal stability of the compound. .
- FIG. 1 illustrates an organic solar cell according to an exemplary embodiment of the present specification.
- 21 is a diagram showing an MS spectrum of Formula 11-a.
- FIG. 25 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 1.
- FIG. 25 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 1.
- FIG. 26 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 2.
- FIG. 26 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 2.
- FIG. 27 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 3.
- FIG. 27 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 3.
- FIG. 28 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 4.
- FIG. 28 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 4.
- FIG. 29 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 5.
- FIG. 30 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 6.
- FIG. 30 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 6.
- FIG. 31 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 7.
- FIG. 31 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 7.
- FIG. 32 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 8.
- FIG. 32 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 8.
- FIG. 33 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 9.
- FIG. 33 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 9.
- FIG. 34 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 10.
- FIG. 34 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 10.
- FIG. 35 is a diagram showing current density by voltage of an organic solar cell according to Experimental Examples 11 to 14.
- FIG. 35 is a diagram showing current density by voltage of an organic solar cell according to Experimental Examples 11 to 14.
- 36 is a diagram showing a UV-Vis absorption spectrum of the solution state of Chemical Formula 1-1-14.
- thermogravimetric analysis (TGA) result of Chemical Formula 1-1-14 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-14.
- 40 is a diagram showing a UV-Vis absorption spectrum of the solution state of Chemical Formula 1-1-15.
- FIG. 41 is a view showing UV-Vis absorption spectra of the film state of Chemical Formula 1-1-15.
- thermogravimetric analysis (TGA) result of Chemical Formula 1-1-15 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-15.
- TGA 47 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-16.
- thermogravimetric analysis (TGA) result of Chemical Formula 1-1-17 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-17.
- 'unit' is a repeating structure included in the monomer of the copolymer, and means a structure in which the monomer is bonded in the copolymer by polymerization.
- the copolymer according to the exemplary embodiment of the present specification includes a first unit represented by Chemical Formula 1 and a second unit represented by Chemical Formula 2.
- the first unit and the second unit are optionally provided such that the S atoms of the thienothiophene group are disposed close to each other.
- the first unit represented by Formula 1 and the second unit represented by Formula 2 included in the copolymer according to the exemplary embodiment of the present specification have regioregular binding in a predetermined direction in the copolymer.
- Copolymers having regioregularity according to one embodiment of the present specification are relatively excellent in crystallinity.
- regioregularity optionally means maintaining a constant direction in which a structure binds in the copolymer.
- the copolymer according to one embodiment of the present specification includes a structure in which two thiophene groups are condensed, thereby inducing high electron density and / or stabilized the resonance structure in the device.
- R1 is a substituted or unsubstituted carbonyl group.
- R1 is a substituted or unsubstituted ester group.
- R2 is a substituted or unsubstituted carbonyl group.
- R2 is a substituted or unsubstituted ester group.
- the unit represented by Chemical Formula 1 is represented by the following Chemical Formula 1-1 or Chemical Formula 1-2.
- R3 and R4 are the same as defined in Formula 1,
- R5 and R6 are the same as or different from each other, and each independently hydrogen; Halogen group; Nitro group; Cyano group; Carboxyl groups; Hydroxyl group; Substituted or unsubstituted carbonyl group; Sulfonyl group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted allyl group; Substituted or unsubstituted alkoxy group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted ester group; Substituted or unsubstituted amide group; Substituted or unsubstituted ether group; Substituted or unsubstituted sulfonyl group; Substituted or unsubstituted sulfoxy group; Substituted or unsubstitute
- R1 is a carbonyl group substituted with a substituted or unsubstituted alkoxy group.
- R2 is a carbonyl group substituted with a substituted or unsubstituted alkoxy group.
- R1 is a carbonyl group substituted with a substituted or unsubstituted alkyl group.
- R2 is a carbonyl group substituted with a substituted or unsubstituted alkyl group.
- the copolymer includes a unit represented by the following formula (2).
- n is an integer from 1 to 10,000
- R1 and R2 are the same as or different from each other, and each independently hydrogen; Halogen group; Nitro group; Cyano group; Carboxyl groups; Hydroxyl group; Substituted or unsubstituted carbonyl group; Sulfonyl group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted allyl group; Substituted or unsubstituted alkoxy group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted ester group; Substituted or unsubstituted amide group; Substituted or unsubstituted ether group; Substituted or unsubstituted sulfonyl group; Substituted or unsubstituted sulfoxy group; Substituted or unsubstitute
- R3 and R4 are the same as or different from each other, and each independently hydrogen; Or an electronic drawer,
- a and A ' are the same as or different from each other, and each independently a substituted or unsubstituted monocyclic or polycyclic aryl group; Or a substituted or unsubstituted monocyclic or polycyclic heterocyclic group including one or more of N, O, S and Se atoms.
- A is an electron donor or an electron acceptor to act in the copolymer.
- A includes one or two or more of the following Formulas.
- X1 to X6 are the same as or different from each other, and each independently CRR ', NR, O, SiRR', PR, S, GeRR ', Se or Te,
- Y1 and Y2 are the same as or different from each other, and each independently CR ′′, N, SiR ′′, P or GeR ′′,
- R ', R ", R"', R10 to R13 are the same as or different from each other, and each independently hydrogen; Halogen group; Nitro group; Cyano group; Carboxyl groups; Hydroxyl group; Substituted or unsubstituted carbonyl group; Sulfonyl group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted allyl group; Substituted or unsubstituted alkoxy group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted ester group; Substituted or unsubstituted amide group; Substituted or unsubstituted ether group; Substituted or unsubstituted sulfonyl group; Substituted or unsubstituted sulfoxy group;
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- a and A ' are the same as or different from each other, and each independently have the following structure.
- the copolymer includes a unit represented by any one of the following Formulas 3 to 10.
- n is an integer from 1 to 10,000
- X1 to X12 are the same as or different from each other, and each independently CRR ', NR, O, SiRR', PR, S, GeRR ', Se or Te,
- Y1 to Y4 are the same as or different from each other, and each independently CR ′′, N, SiR ′′, P or GeR ′′,
- R ', R ", R"', R1, R2, R10 to R17 are the same as or different from each other, and each independently hydrogen; Halogen group; Nitro group; Cyano group; Carboxyl groups; Hydroxyl group; Substituted or unsubstituted carbonyl group; Sulfonyl group; Substituted or unsubstituted alkyl group; Substituted or unsubstituted allyl group; Substituted or unsubstituted alkoxy group; A substituted or unsubstituted cycloalkyl group; Substituted or unsubstituted alkenyl group; Substituted or unsubstituted ester group; Substituted or unsubstituted amide group; Substituted or unsubstituted ether group; Substituted or unsubstituted sulfonyl group; Substituted or unsubstituted sul
- R3 and R4 are the same as or different from each other, and each independently hydrogen; Or an electronic drawer.
- the electron withdrawing group refers to a functional group having a relatively high electronegativity as a functional group that attracts electrons.
- the electron withdrawing is a halogen group.
- 'end' refers to a structure at both ends of a copolymer except for repeating units.
- substituted means that a hydrogen atom bonded to a carbon atom of the compound is replaced with another substituent, and the position to be substituted is not limited to a position where the hydrogen atom is substituted, that is, a position where a substituent can be substituted, if two or more substituted , Two or more substituents may be the same or different from each other.
- substituted or unsubstituted is deuterium; Halogen group; An alkyl group; Alkenyl groups; An alkoxy group; Ester group; Carbonyl group; Carboxyl groups; Hydroxyl group; Cycloalkyl group; Silyl groups; Aryl alkenyl group; Aryloxy group; Alkyl thioxy group; Alkyl sulfoxy groups; Aryl sulfoxy group; Boron group; Alkylamine group; Aralkyl amine groups; Arylamine group; Heterocyclic group; Arylamine group; Aryl group; Nitrile group; Nitro group; Hydroxyl group; And it is substituted with one or more substituents selected from the group consisting of a heterocyclic group containing one or more of N, O, S atoms or have no substituents.
- the substituents may be substituted or unsubstituted with additional substituents.
- the halogen group may be fluorine, chlorine, bromine or iodine.
- Z is hydrogen; A substituted or unsubstituted alkyl group having 1 to 20 carbon atoms; A substituted or unsubstituted cycloalkyl group having 3 to 60 carbon atoms; A substituted or unsubstituted alkoxy group having 1 to 20 carbon atoms; Substituted or unsubstituted arylalkyl group having 7 to 50 carbon atoms; Substituted or unsubstituted aryl group having 6 to 60 carbon atoms; Or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms containing at least one of N, O, S and Se atoms.
- the amide group may be substituted with one or two of the nitrogen of the amide group is hydrogen, a linear, branched or cyclic alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.
- the ester group may be substituted with oxygen of the ester group having 1 to 25 carbon atoms, linear, branched or cyclic alkyl groups or aryl groups having 6 to 25 carbon atoms.
- it may be a compound of the following structural formula, but is not limited thereto.
- the alkyl group may be linear or branched chain, carbon number is not particularly limited, but is preferably 1 to 50.
- Specific examples include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n-pentyl , Isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n -Heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-o
- the cycloalkyl group is not particularly limited, but preferably 3 to 60 carbon atoms, specifically, cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3,4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, and the like, but are not limited thereto. Do not.
- the alkoxy group may be linear, branched or cyclic. Although carbon number of an alkoxy group is not specifically limited, It is preferable that it is C1-C20. Specifically, methoxy, ethoxy, n-propoxy, isopropoxy, i-propyloxy, n-butoxy, isobutoxy, tert-butoxy, sec-butoxy, n-pentyloxy, neopentyloxy, Isopentyloxy, n-hexyloxy, 3,3-dimethylbutyloxy, 2-ethylbutyloxy, n-octyloxy, n-nonyloxy, n-decyloxy, benzyloxy, p-methylbenzyloxy and the like It may be, but is not limited thereto.
- the alkenyl group may be linear or branched chain, the carbon number is not particularly limited, but is preferably 2 to 40.
- Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2- ( Naphthyl-1-yl) vinyl-1-yl, 2,2-bis (diphenyl-1-yl) vinyl-1-yl, stilbenyl group, styrenyl group and the like, but are not limited thereto.
- the arylalkyl group is not particularly limited in carbon number, but in one embodiment of the present specification, the arylalkyl group has 7 to 50 carbon atoms. Specifically, the aryl moiety has 6 to 49 carbon atoms, and the alkyl moiety has 1 to 44 carbon atoms.
- benzyl group p-methylbenzyl group, m-methylbenzyl group, p-ethylbenzyl group, m-ethylbenzyl group, 3,5-dimethylbenzyl group, ⁇ -methylbenzyl group, ⁇ , ⁇ -dimethylbenzyl Group, ⁇ , ⁇ -methylphenylbenzyl group, 1-naphthylbenzyl group, 2-naphthylbenzyl group, p-fluorobenzyl group, 3,5-difluorobenzyl group, ⁇ , ⁇ -ditrifluoromethylbenzyl group , p-methoxybenzyl group, m-methoxybenzyl group, ⁇ -phenoxybenzyl group, ⁇ -benzyl groupoxybenzyl group, naphthylmethyl group, naphthylethyl group, naphthylisopropyl group, pyrrolylmethyl group, pyrrole E
- the aryl group may be a monocyclic aryl group or a polycyclic aryl group, and includes a case where an alkyl group having 1 to 25 carbon atoms or an alkoxy group having 1 to 25 carbon atoms is substituted.
- the aryl group in the present specification may mean an aromatic ring.
- the aryl group is a monocyclic aryl group
- carbon number is not particularly limited, but preferably 6 to 25 carbon atoms.
- the monocyclic aryl group may be a phenyl group, biphenyl group, terphenyl group, stilbenyl group and the like, but is not limited thereto.
- Carbon number is not particularly limited when the aryl group is a polycyclic aryl group. It is preferable that it is C10-24.
- the polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, and the like, but is not limited thereto.
- the fluorenyl group may be substituted, and adjacent substituents may be bonded to each other to form a ring.
- the heterocyclic group is a heterocyclic group including one or more of N, O, S, and Se as a hetero atom, and the carbon number is not particularly limited, but is preferably 2 to 60 carbon atoms.
- heterocyclic groups include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, pyrimidyl group, triazine group, triazole group, Acridyl group, pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyrido pyrimidinyl group, pyrido pyrazinyl group, pyrazino pyrazinyl group, isoquinoline group , Indole group, carbazole group, imidazo
- the heterocyclic group may be monocyclic or polycyclic, and may be aromatic, aliphatic or a condensed ring of aromatic and aliphatic.
- R1 is a substituted or unsubstituted ester group.
- R1 is an ester group substituted with an alkyl group.
- R1 is an ester group substituted with a 2-ethylhexyl group.
- R1 is a substituted or unsubstituted carbonyl group.
- R1 is a carbonyl group substituted with an alkyl group.
- R1 is a carbonyl group substituted with a 3-heptenyl group.
- R2 is a substituted or unsubstituted ester group.
- R2 is an ester group substituted with an alkyl group.
- R2 is an ester group substituted with a 2-ethylhexyl group.
- R2 is a substituted or unsubstituted carbonyl group.
- R2 is a carbonyl group substituted with an alkyl group.
- R2 is a carbonyl group substituted with a 3-heptenyl group.
- R5 is a substituted or unsubstituted alkyl group.
- R5 is a substituted or unsubstituted 2-ethylhexyl group; Or a substituted or unsubstituted 3-heptenyl group.
- R5 is a 2-ethylhexyl group; Or 3-heptenyl group.
- R6 is a substituted or unsubstituted alkyl group.
- R6 is a substituted or unsubstituted 2-ethylhexyl group; Or a substituted or unsubstituted 3-heptenyl group.
- R6 is a 2-ethylhexyl group; Or 3-heptenyl group.
- R3 is hydrogen
- R4 is hydrogen
- R10 is hydrogen
- R11 is hydrogen
- R12 is hydrogen
- R13 is hydrogen
- R14 is hydrogen
- R15 is hydrogen
- R16 is hydrogen
- R17 is hydrogen
- X1 is S.
- X2 is S.
- X2 is CRR '.
- X2 is NR.
- X2 is SiRR '.
- X3 is S.
- X3 is O.
- X3 is NR.
- X3 is CRR '.
- X3 is SiRR '.
- X4 is S.
- X4 is CRR '.
- X5 is S.
- X5 is O.
- X5 is SiRR '.
- X6 is CRR '.
- X6 is SiRR '.
- X6 is O.
- X6 is S.
- X7 is O.
- X7 is S.
- X7 is CRR '.
- X7 is SiRR '.
- X8 is S.
- X8 is NR.
- X9 is NR.
- X9 is CRR '.
- X10 is CRR '.
- X10 is S.
- X11 is O.
- X11 is S.
- X12 is O.
- X12 is S.
- R and R ' are the same as or different from each other, and each independently a substituted or unsubstituted alkyl group; Substituted or unsubstituted alkoxy group; Or a substituted or unsubstituted aryl group.
- R is a substituted or unsubstituted alkyl group.
- R is a linear or branched alkyl group.
- R is a substituted or unsubstituted octyl group.
- R is an octyl group.
- R is a substituted or unsubstituted 2-ethylhexyl group.
- R is a 2-ethylhexyl group.
- R is a substituted or unsubstituted 3,7-dimethyloctyl group.
- R is a 3,7-dimethyloctyl group.
- R is a substituted or unsubstituted aryl group.
- R is a substituted or unsubstituted phenyl group.
- R is a phenyl group substituted with a substituted or unsubstituted alkyl group.
- R is a phenyl group substituted with an alkyl group.
- R is a phenyl group substituted with a hexyl group.
- R ' is a substituted or unsubstituted alkyl group.
- R ' is a linear or branched alkyl group.
- R ' is a substituted or unsubstituted octyl group.
- R ' is an octyl group.
- R ' is a substituted or unsubstituted 2-ethylhexyl group.
- R ' is a 2-ethylhexyl group.
- R ' is a substituted or unsubstituted 3,7-dimethyloctyl group.
- R ' is a 3,7-dimethyloctyl group.
- R ' is a substituted or unsubstituted aryl group.
- R ' is a substituted or unsubstituted phenyl group.
- R ' is a phenyl group substituted with a substituted or unsubstituted alkyl group.
- R ' is a phenyl group substituted with an alkyl group.
- R ' is a phenyl group substituted with a hexyl group.
- Y1 is CR ′′.
- Y1 is N.
- Y2 is CR ′′.
- Y2 is N.
- Y3 is CR ′′.
- Y4 is CR ′′.
- R ′′ is a substituted or unsubstituted alkoxy group; or a substituted or unsubstituted heteroring group including one or more of N, O, S, and Se atoms.
- R ′′ is a substituted or unsubstituted alkoxy group.
- R ′′ is a substituted or unsubstituted 2-ethylhexyloxy group.
- R ′′ is a 2-ethylhexyloxy group.
- R ′′ is a substituted or unsubstituted hexyloxy group.
- R ′′ is a hexyloxy group.
- R ′′ is a substituted or unsubstituted heteroring group including one or more of N, O, S, and Se atoms.
- R ′′ is a substituted or unsubstituted heteroring group including one or more S atoms.
- R ′′ is a substituted or unsubstituted thiophene group.
- R ′′ is a thiophene group substituted with a substituted or unsubstituted alkyl group.
- R ′′ is a thiophene group substituted with a substituted or unsubstituted 2-ethylhexyl group.
- R ′′ is a thiophene group substituted with a 2-ethylhexyl group.
- R ′′ is a thiophene group substituted with a substituted or unsubstituted hexyl group.
- R ′′ is a thiophene group substituted with a hexyl group.
- R ′′ is a substituted or unsubstituted heteroring group including one or more Se atoms.
- R ′′ is a substituted or unsubstituted selenophene group.
- R ′′ is a selenophene group substituted with a substituted or unsubstituted alkyl group.
- R ′′ is a selenophene group substituted with a substituted or unsubstituted 2-ethylhexyl group.
- R ′′ is a selenophene group substituted with a 2-ethylhexyl group.
- R ′′ is a selenophene group substituted with a substituted or unsubstituted 2-hexyldecanyl group.
- R ′′ is a selenophene group substituted with a 2-hexyldecanyl group.
- the copolymer is represented by any one of the following Formulas 1-1-1 to 1-1-17.
- n is the same as described above.
- the end group of the copolymer is a heterocyclic group or an aryl group.
- the end group of the copolymer is 4- (trifluoromethyl) phenyl group (4- (trifluoromethyl) phenyl).
- the copolymer has a number average molecular weight of 500 g / mol to 1,000,000 g / mol.
- the number average molecular weight of the copolymer is preferably 10,000 to 100,000.
- the number average molecular weight of the copolymer is 30,000 to 100,000.
- the copolymer may have a molecular weight distribution of 1 to 100.
- the copolymer has a molecular weight distribution of 1 to 3.
- the number average molecular weight is preferably 100,000 or less in order to have a certain solubility or higher so that the solution coating method is advantageous.
- the copolymer may be prepared based on the preparation examples described below.
- one equivalent of bromine is reacted with a thienothiophene group substituted with R1 and R2, respectively, and brominated in an S atom direction of a thienothiophene group, and then polymerized with each unit, thereby providing Chemical Formula 1-1.
- a copolymer including the first unit and the second unit can be produced.
- the copolymer according to the present specification may be prepared by a multistage chemical reaction. Monomers are prepared through alkylation reactions, Grignard reactions, Suzuki coupling reactions, and Still coupling reactions, followed by carbon-carbon coupling reactions such as steel coupling reactions. Unions can be prepared. When the substituent to be introduced is a boronic acid or boronic ester compound, it may be prepared through Suzuki coupling, and the substituent to be introduced is tributyltin or trimethyltin. ) Compound may be prepared through a steel coupling reaction, but is not limited thereto.
- the first electrode A second electrode provided to face the first electrode; And at least one organic material layer provided between the first electrode and the second electrode and including a photoactive layer, wherein at least one of the organic material layers includes the copolymer.
- the organic solar cell according to the exemplary embodiment of the present specification includes a first electrode, a photoactive layer, and a second electrode.
- the organic solar cell may further include a substrate, a hole transport layer, and / or an electron transport layer.
- the organic solar cell when the organic solar cell receives photons from an external light source, electrons and holes are generated between the electron donor and the electron acceptor. The generated holes are transported to the anode through the electron donor layer.
- the organic material layer includes a hole transporting layer, a hole injection layer, or a layer for simultaneously transporting holes and hole injection, and the hole transporting layer, the hole injection layer, or a layer for simultaneously transporting holes and hole injection, It includes the copolymer.
- the organic material layer includes an electron injection layer, an electron transporting layer, or a layer for simultaneously injecting and transporting electrons
- the electron injection layer, an electron transporting layer, or a layer for simultaneously injecting and transporting electrons is It includes the copolymer.
- FIG. 1 is a view showing an organic solar cell according to an exemplary embodiment of the present specification.
- the organic solar cell when the organic solar cell receives photons from an external light source, electrons and holes are generated between the electron donor and the electron acceptor. The generated holes are transported to the anode through the electron donor layer.
- the organic solar cell may further include an additional organic material layer.
- the organic solar cell may reduce the number of organic material layers by using an organic material having several functions at the same time.
- the first electrode is an anode
- the second electrode is a cathode
- the first electrode is a cathode and the second electrode is an anode.
- the organic solar cell may be arranged in the order of cathode, photoactive layer and anode, and may be arranged in the order of anode, photoactive layer and cathode, but is not limited thereto.
- the organic solar cell may be arranged in order of an anode, a hole transport layer, a photoactive layer, an electron transport layer, and a cathode, or may be arranged in the order of a cathode, an electron transport layer, a photoactive layer, a hole transport layer, and an anode. It is not limited to this.
- the organic solar cell has a normal structure.
- the organic solar cell has an inverted structure.
- the organic solar cell has a tandem structure.
- the photoactive layer may be one layer or two or more layers.
- a buffer layer may be provided between the photoactive layer and the hole transport layer or between the photoactive layer and the electron transport layer.
- a hole injection layer may be further provided between the anode and the hole transport layer.
- an electron injection layer may be further provided between the cathode and the electron transport layer.
- the photoactive layer includes one or two or more selected from the group consisting of an electron donor and an acceptor, and the electron donor material includes the copolymer.
- the electron acceptor material may be selected from the group consisting of fullerenes, fullerene derivatives, vasocuprones, semiconducting elements, semiconducting compounds, and combinations thereof.
- fullerene, fullerene derivative PCBM ((6,6) -phenyl-C61-butyric acid-methylester) or PCBCR ((6,6) -phenyl-C61-butyric acid-cholesteryl ester
- perylene perylene
- PBI polybenzimidazole
- PTCBI 3,4,9,10-perylene-tetracarboxylic bis-benzimidazole
- the electron donor and the electron acceptor constitute a bulk hetero junction (BHJ).
- BHJ bulk hetero junction
- Bulk heterojunction means that the electron donor material and the electron acceptor material are mixed with each other in the photoactive layer.
- the photoactive layer has a bilayer bilayer structure including an n-type organic compound layer and a p-type organic compound layer, and the p-type organic compound layer includes the copolymer.
- the substrate may be a glass substrate or a transparent plastic substrate having excellent transparency, surface smoothness, ease of handling, and waterproofness, but is not limited thereto, and the substrate may be any substrate that is commonly used in organic solar cells. Specifically, there are glass or polyethylene terephthalate (PET), polyethylene naphthalate (PEN), polypropylene (PP), polyimide (PI), and triacetyl cellulose (TAC). It is not limited to this.
- PET polyethylene terephthalate
- PEN polyethylene naphthalate
- PP polypropylene
- PI polyimide
- TAC triacetyl cellulose
- the anode electrode may be a transparent and excellent conductive material, but is not limited thereto.
- Metals such as vanadium, chromium, copper, zinc and gold or alloys thereof;
- Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); ZnO: Al or SNO 2 : Combination of metals and oxides such as Sb;
- Conductive polymers such as poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDOT), polypyrrole and polyaniline, and the like, but are not limited thereto.
- the method of forming the anode electrode is not particularly limited, but is applied to one surface of the substrate or coated in a film form using, for example, sputtering, E-beam, thermal deposition, spin coating, screen printing, inkjet printing, doctor blade or gravure printing. It can be formed by.
- the anode electrode When the anode electrode is formed on the substrate, it may be subjected to cleaning, water removal, and hydrophilic modification.
- the patterned ITO substrate is sequentially cleaned with a detergent, acetone, isopropyl alcohol (IPA), and then dried in a heating plate for 1 to 30 minutes at 100 to 150 ° C., preferably at 120 ° C. for 10 minutes to remove moisture.
- IPA isopropyl alcohol
- the surface of the substrate is modified to be hydrophilic.
- the bonding surface potential can be maintained at a level suitable for the surface potential of the photoactive layer.
- Pretreatment techniques for the anode electrode include a) surface oxidation using parallel plate discharge, b) oxidation of the surface through ozone generated using UV ultraviolet light in a vacuum state, and c) oxygen generated by plasma. And oxidation using radicals.
- One of the above methods can be selected depending on the state of the anode electrode or the substrate. In any case, however, it is desirable to prevent oxygen escape from the surface of the anode electrode or the substrate and to minimize the residual of moisture and organic matter in common. At this time, the substantial effect of the pretreatment can be maximized.
- a method of oxidizing a surface through ozone generated using UV may be used.
- the patterned ITO substrate is baked on a hot plate and dried well, then put into a chamber, and a UV lamp is activated to cause oxygen gas to react with UV light.
- the patterned ITO substrate can be cleaned.
- the surface modification method of the patterned ITO substrate in this specification does not need to be specifically limited, Any method may be used as long as it is a method of oxidizing a substrate.
- the cathode electrode may be a metal having a small work function, but is not limited thereto.
- metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin and lead or alloys thereof; LiF / Al, LiO 2 / Al, LiF / Fe, Al: Li, Al: BaF 2 , Al: BaF 2
- It may be a material of a multi-layer structure such as, but is not limited thereto.
- the cathode electrode may be formed by being deposited in a thermal evaporator showing a vacuum degree of 5 ⁇ 10 ⁇ 7 torr or less, but is not limited thereto.
- the hole transport layer and / or electron transport layer material plays a role of efficiently transferring electrons and holes separated in the photoactive layer to the electrode, and the material is not particularly limited.
- the hole transport layer material may be PEDOT: PSS (Poly (3,4-ethylenediocythiophene) doped with poly (styrenesulfonic acid)), molybdenum oxide (MoO x ); Vanadium oxide (V 2 O 5); Nickel oxide (NiO); Tungsten oxide (WO x ), and the like, but is not limited thereto.
- PSS Poly (3,4-ethylenediocythiophene) doped with poly (styrenesulfonic acid)), molybdenum oxide (MoO x ); Vanadium oxide (V 2 O 5); Nickel oxide (NiO); Tungsten oxide (WO x ), and the like, but is not limited thereto.
- the electron transport layer material may be electron-extracting metal oxides, specifically, a metal complex of 8-hydroxyquinoline; Complexes including Alq 3 ; Metal complexes including Liq; LiF; Ca; Titanium oxide (TiO x ); Zinc oxide (ZnO); And cesium carbonate (Cs 2 CO 3 ), and the like, but is not limited thereto.
- metal oxides specifically, a metal complex of 8-hydroxyquinoline; Complexes including Alq 3 ; Metal complexes including Liq; LiF; Ca; Titanium oxide (TiO x ); Zinc oxide (ZnO); And cesium carbonate (Cs 2 CO 3 ), and the like, but is not limited thereto.
- the photoactive layer may be formed by dissolving a photoactive material, such as an electron donor and / or an electron acceptor, in an organic solvent and then spin coating, dip coating, screen printing, spray coating, doctor blade, brush painting, or the like. It is not limited to the method.
- a photoactive material such as an electron donor and / or an electron acceptor
- Methyl-2-thiophenecarboxylate (4.00 g, 28.13 mmol) and chloromethyl methyl ether (11.00 g 136.63 mmol) were added to a 100 ml flask with a nitrogen gas purge tube. Titanium tetrachloride (TiCl 4 ) (8.00g, 42.20mmol) was slowly injected into the ice bath and reacted for 5 hours. After extracting with excess distilled water and methyl chloride (MC), the organic layer was removed with anhydrous sodium sulfate. The remaining solvent was evaporated off, recrystallized with hexane, and the resulting crystal was filtered under reduced pressure to obtain 5.20 g (93.2%) of white crystals.
- ethyl acetate and 1-c compound (1.64 g, 8.19 mmol) were added to dry ice and then cooled in a dry ice bath.
- Metachloroperoxide benzoic acid (MCPBA) (2.12g, 12.28mmol) dissolved in ethyl acetate was slowly injected and reacted overnight. After the solvent was removed using an evaporator, Acetic anhydride was added and reacted for 2 hours and a half. The reaction was cooled at room temperature and then distilled to remove acetic anhydride.
- Monomer 4-b was prepared in the same manner as in Example 3, except that 2- (2-hexyldecyl) selenophene was used instead of 2- (2-ethylhexyl) selenophene in Example 3.
- reaction solution was poured into water and extracted by adding toluene. After drying over magnesium sulfate (MgSO 4 ), the solvent was removed under reduced pressure. A silica column (eluent: Hx) gave a yellow liquid.
- the 5-d compound (0.58 g, 1.2 mmol) was dissolved in 20 ml tetrahydrofuran (THF) under nitrogen conditions.
- N-butyllithium (1.7 ml, 1.6 M solution in hexane) was slowly added at -78 ° C, stirred for 30 minutes, and stirred at room temperature for 2 hours.
- 0.92 ml of tributyltin chloride solution was added at -78 ° C.
- the temperature was raised and stirred at room temperature for 10 hours. Poured into water and extracted with hexane. The solvent was removed under reduced pressure, and a brown liquid was obtained by silica column (eluent: Hx, 10% triethylamine).
- 2,5-Dibromothiophene (2.5-Dibromothiophene, 9.68 g, 40.0 mmol) was added to 200 ml of tetrahydrofuran (THF), and the temperature was lowered to -78 ° C.
- THF tetrahydrofuran
- 1.6M n-BuLi 1.6M n-Butyllithium in hexane, 55ml, 88mmol
- 1M trimethyltinchloride dissolved in THF (1M Trimethyltinchloride in THF, 100ml, 100 mmol) was added at a time, and the temperature was raised to room temperature, followed by stirring for 12 hours.
- 2-hexylthiophene (2-hexylthiophene, 10.0 g, 59.4 mmol) was added to 500 ml of tetrahydrofuran (THF), and the temperature was lowered to -78 ° C. At this temperature, 2.5M n-BuLi (2.5M n-Butyllithium in hexane, 24.0 ml, 59.4 mmol) dissolved in hexane was slowly added and stirred for 30 minutes. Thereafter, the temperature was raised to 0 ° C.
- THF tetrahydrofuran
- Yun-Xiang Xu Chu-Chen Chueh, Hin-Lap Yip, Fei-Zhi Ding, Yong-XiLi, Chang-Zhi Li, Xiaosong Li, Wen-Chang Chen, and Alex K.-Y. Jen, Adv. Mater. It prepared by the same method as the synthesis method of 2012, 24, 6356-6361.
- 21 is a diagram showing an MS spectrum of Formula 11-a.
- Example 1 Formula 15-a was used instead of Formula 1-g, and 2,6-bis (trimethyltin) -4,8-bis (2-ethylhexyloxy) benzo [1,2-b: 4 Example instead of, 5-b '] dithiophene (2,6-Bis (trimethyltin) -4,8-bis (2-ethylhexyloxy) benzo [1,2-b: 4,5-b'] dithiophene) Formula 15-d was prepared in the same manner as in Example 1, except that Chemical Formula 9-a of 9 was used.
- Formula 15-d was prepared in the same manner as in Example 1 except that Formula 15-a was used instead of Formula 1-g.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- Soxhlet extraction with methylene chloride and chloroform was followed by precipitation of the chloroform portion back into methanol to filter out solids.
- 36 is a diagram showing a UV-Vis absorption spectrum of the solution state of Chemical Formula 1-1-14.
- thermogravimetric analysis (TGA) result of Chemical Formula 1-1-14 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-14.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- 40 is a diagram showing a UV-Vis absorption spectrum of the solution state of Chemical Formula 1-1-15.
- FIG. 41 is a view showing UV-Vis absorption spectra of the film state of Chemical Formula 1-1-15.
- thermogravimetric analysis (TGA) result of Chemical Formula 1-1-15 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-15.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- TGA 47 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-16.
- the mixture was cooled to room temperature and poured into methanol, followed by solid filtering to acetone, hexane, methylene chloride, and soxhlet extraction in chloroform, and then the chloroform portion was precipitated in methanol again to filter out the solid.
- thermogravimetric analysis (TGA) result of Chemical Formula 1-1-17 is a diagram showing a thermogravimetric analysis (TGA) result of Chemical Formula 1-1-17.
- ⁇ onset represents absorbance in a film state
- E g opt represents a band gap
- T d represents a pyrolysis temperature
- the UV-Vis absorption spectra of FIGS. 36, 40, 44, and 48 absorb the samples in which 1 wt% of Formula 1-1-14, 1-1-15, 1-1-16 or 1-1-17 is dissolved in chlorobenzene.
- the spectra were analyzed using a UV-Vis absorption spectrometer.
- UV-Vis absorption spectra of FIGS. 37, 41, 45 and 49 are obtained by dissolving Formulas 1-1-14, 1-1-15, 1-1-16 or 1-1-17 in chlorobenzene at a concentration of 1 wt%. After the solution was dropped on the glass substrate, the spin-coated sample for 60 seconds at 1000 rpm was heat-treated at 80 degrees and analyzed using an absorbance spectrum (UV-Vis absorption spectrometer).
- thermogravimetric analysis results of Chemical Formulas 1-1-14 to 1-1-17 are diagrams showing thermogravimetric analysis results of Chemical Formulas 1-1-14 to 1-1-17, and the temperatures described in FIGS. 39, 43, 47, and 51 are represented by Chemical Formulas 1-1- The temperature at which 14, 1-1-15, 1-1-16 or 1-1-17 is lost by 5% based on 100% by weight at the start of the analysis, ie the pyrolysis temperature (T d ).
- the compounds of Preparation Examples 2 to 6, 9 and 10 are used as electron donors and PC60BM is used as electron acceptors, but the compounding ratio is 7: 3 (w / w ratio) and dissolved in chlorobenzene (CB) in a complex solution.
- a composite solution was prepared. At this time, the concentration was adjusted to 4.0 wt%, and the organic solar cell had a structure of ITO / PEDOT: PSS / photoactive layer / LiF / Al.
- ITO-coated glass substrates were ultrasonically cleaned with distilled water, acetone and 2-propanol, ozonated the ITO surface for 10 minutes, and spin-coated PEDOT: PSS (baytrom P) to 45 nm to 10 at 120 ° C.
- the compound-PCBM composite solution was filtered through a 0.45 ⁇ m PP syringe filter and spin-coated, and Al was deposited to a thickness of 200 nm using a thermal evaporator under 3 ⁇ 10 -8 torr vacuum.
- An organic solar cell was prepared.
- Voc is the open voltage
- Jsc is the short-circuit current
- FF is the fill factor
- PCE is the energy conversion efficiency.
- the open-circuit and short-circuit currents are the X- and Y-axis intercepts in the four quadrants of the voltage-current density curve, respectively. The higher these two values, the higher the efficiency of the solar cell.
- the fill factor is the area of the rectangle drawn inside the curve divided by the product of the short circuit current and the open voltage. By dividing these three values by the intensity of the emitted light, the energy conversion efficiency can be obtained, and higher values are preferable.
- FIG. 25 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 1.
- FIG. 25 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 1.
- FIG. 26 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 2.
- FIG. 26 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 2.
- FIG. 27 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 3.
- FIG. 27 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 3.
- FIG. 28 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 4.
- FIG. 28 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 4.
- FIG. 29 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 5.
- FIG. 30 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 6.
- FIG. 30 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 6.
- FIG. 31 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 7.
- FIG. 31 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 7.
- FIG. 32 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 8.
- FIG. 32 is a diagram showing current density by voltage of an organic solar cell according to Experimental Example 8.
- FIG. 33 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 9.
- FIG. 33 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 9.
- FIG. 34 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 10.
- FIG. 34 is a diagram showing the current density by voltage of the organic solar cell according to Experimental Example 10.
- the compounds of Preparation Examples 14 to 17 were used as electron donors and PC 71 BM was used as electron acceptors, but the compounding ratio of Table 3 below was dissolved in chlorobenzene (CB) to prepare a composite solution. At this time, 3v / v% of additive diidooctane (DIO) was added.
- the organic solar cell had a structure of ITO / ZnO (sol-gel / photoactive layer / MoO 3 / Ag.
- the glass substrate coated with ITO was ultrasonically washed with distilled water, acetone, 2-propanol, After ozone treatment for 10 minutes on the surface of ITO, 1 g of zinc acetate dehydrate and 0.28 g of ethanolamine to 40 nm thick were spin-coated at 2000 rpm for 40 seconds, and 200 Annealed for 1 hour at ° C.
- the compound-PCBM composite solution was filtered through a 0.45 ⁇ m PP syringe filter and spin-coated at 800 rpm for 40 seconds to form MoO 3 under 2 ⁇ 10 ⁇ 6 torr vacuum.
- An organic solar cell was manufactured by depositing 10 nm at 0.2 ⁇ / s and 100 nm at Ag at 1 ⁇ / s.
- Voc is the open voltage
- Jsc is the short-circuit current
- FF is the fill factor
- PCE is the energy conversion efficiency.
- the open-circuit and short-circuit currents are the X- and Y-axis intercepts in the four quadrants of the voltage-current density curve, respectively. The higher these two values, the higher the efficiency of the solar cell.
- the fill factor is the area of the rectangle drawn inside the curve divided by the product of the short circuit current and the open voltage. By dividing these three values by the intensity of the emitted light, the energy conversion efficiency can be obtained, and higher values are preferable.
- FIG. 35 is a diagram showing current density by voltage of an organic solar cell according to Experimental Examples 11 to 14.
- FIG. 35 is a diagram showing current density by voltage of an organic solar cell according to Experimental Examples 11 to 14.
Abstract
Description
화학식 | Λonset(film) [nm] | Eg opt [eV] | HOMO [eV] | LUMO [eV] | Td [℃] |
1-1-14 | 825 | 1.50 | -5.16 | -3.62 | 333 |
1-1-15 | 815 | 1.52 | -5.15 | -3.64 | 347 |
1-1-16 | 768 | 1.61 | -5.18 | -3.62 | 330 |
1-1-17 | 800 | 1.55 | -5.28 | -3.61 | 422 |
활성층 | Voc(V) | Jsc(mA/cm2) | FF(%) | PCE(%) | |
실험예 1 | 화학식 1-1-2 :PC60BM | 0.627 | 9.45 | 0.624 | 3.68 |
실험예 2 | 화학식 1-1-3:PC60BM | 0.808 | 5.863 | 0.433 | 2.05 |
실험예 3 | 화학식 1-1-4:PC60BM | 0.616 | 11.65 | 0.556 | 4.00 |
실험예 4 | 화학식 1-1-5:PC60BM | 0.618 | 11.56 | 0.573 | 4.10 |
실험예 5 | 화학식 1-1-6:PC60BM | 0.628 | 9.52 | 0.615 | 3.67 |
실험예 6 | 화학식 1-1-9:PC60BM | 0.822 | 10.57 | 0.575 | 4.99 |
실험예 7 | 화학식 1-1-10:PC60BM | 0.824 | 11.41 | 0.671 | 6.30 |
실험예 8 | 화학식 1-1-11:PC60BM | 0.814 | 10.45 | 0.592 | 5.04 |
실험예 9 | 화학식 1-1-12:PC60BM | 0.800 | 11.97 | 0.620 | 5.94 |
실험예 10 | 화학식 1-1-13:PC60BM | 0.838 | 7.99 | 0.356 | 2.38 |
활성층 | 활성층 두께(nm) | Voc(V) | Jsc(mA/cm2) | FF(%) | PCE(%) | |
실험예 11 | 화학식 1-1-14 :PC71BM=1:2 | 90 | 0.72 | 16.24 | 63.56 | 7.44 |
실험예 12 | 화학식 1-1-15:PC71BM=1:2 | 90 | 0.73 | 14.97 | 59.47 | 6.47 |
실험예 13 | 화학식 1-1-16:PC71BM=1:1.5 | 80 | 0.71 | 15.49 | 60.54 | 6.64 |
실험예 14 | 화학식 1-1-17:PC71BM=1:1.5 | 80 | 0.75 | 15.81 | 63.30 | 7.54 |
Claims (16)
- 하기 화학식 1로 표시되는 단위를 포함하는 것인 공중합체:[화학식 1]화학식 1에 있어서,R1 및 R2는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기; 니트로기; 시아노기; 카복실기; 히드록시기; 치환 또는 비치환된 카보닐기; 술포닐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 알릴기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 에스터기; 치환 또는 비치환된 아미드기; 치환 또는 비치환된 에테르기; 치환 또는 비치환된 술포닐기; 치환 또는 비치환된 술폭시기; 치환 또는 비치환된 아릴알킬기; 치환 또는 비치환된 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기이고,R3 및 R4는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 또는 전자끌개이며,A는 치환 또는 비치환된 단환 또는 다환의 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 단환 또는 다환의 헤테로고리기이다.
- 청구항 1에 있어서,상기 화학식 1로 표시되는 단위는 하기 화학식 1-1 또는 화학식 1-2로 표시되는 것인 공중합체:[화학식 1-1][화학식 1-2]화학식 1-1 및 화학식 1-2에 있어서,A, R3 및 R4는 화학식 1에서 정의한 바와 동일하고,R5 및 R6는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기; 니트로기; 시아노기; 카복실기; 히드록시기; 치환 또는 비치환된 카보닐기; 술포닐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 알릴기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 에스터기; 치환 또는 비치환된 아미드기; 치환 또는 비치환된 에테르기; 치환 또는 비치환된 술포닐기; 치환 또는 비치환된 술폭시기; 치환 또는 비치환된 아릴알킬기; 치환 또는 비치환된 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기이다.
- 청구항 1에 있어서,상기 공중합체는 하기 화학식 2로 표시되는 단위를 포함하는 것인 공중합체:[화학식 2]화학식 2에 있어서,n은 1 내지 10,000의 정수이고,R1 및 R2는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기; 니트로기; 시아노기; 카복실기; 히드록시기; 치환 또는 비치환된 카보닐기; 술포닐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 알릴기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 에스터기; 치환 또는 비치환된 아미드기; 치환 또는 비치환된 에테르기; 치환 또는 비치환된 술포닐기; 치환 또는 비치환된 술폭시기; 치환 또는 비치환된 아릴알킬기; 치환 또는 비치환된 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기이며,R3 및 R4는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 또는 전자끌개이며,A 및 A'는 서로 동일하거나 상이하고, 각각 독립적으로 치환 또는 비치환된 단환 또는 다환의 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 단환 또는 다환의 헤테로고리기이다.
- 청구항 1에 있어서,상기 A는 전자 공여체 또는 전자수용체로 작용하는 것인 공중합체.
- 청구항 1에 있어서,상기 A는 하기 화학식 중 1 또는 2 이상을 포함하는 것인 공중합체:상기 구조에 있어서,X1 내지 X6은 서로 동일하거나 상이하고, 각각 독립적으로 CRR', NR, O, SiRR', PR, S, GeRR', Se 또는 Te이고,Y1 및 Y2는 서로 동일하서나 상이하고, 각각 독립적으로 CR", N, SiR", P 또는 GeR"이며,R', R", R"', R10 내지 R13은 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기; 니트로기; 시아노기; 카복실기; 히드록시기; 치환 또는 비치환된 카보닐기; 술포닐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 알릴기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 에스터기; 치환 또는 비치환된 아미드기; 치환 또는 비치환된 에테르기; 치환 또는 비치환된 술포닐기; 치환 또는 비치환된 술폭시기; 치환 또는 비치환된 아릴알킬기; 치환 또는 비치환된 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기이다.
- 청구항 1에 있어서,상기 공중합체는 하기 화학식 3 내지 10 중 어느 하나로 표시되는 단위를 포함하는 것인 공중합체:[화학식 3][화학식 4][화학식 5][화학식 6][화학식 7][화학식 8][화학식 9][화학식 10]화학식 3 내지 10에 있어서,n은 1 내지 10,000의 정수이며,X1 내지 X12는 서로 동일하거나 상이하고, 각각 독립적으로 CRR', NR, O, SiRR', PR, S, GeRR', Se 또는 Te이고,Y1 내지 Y4는 서로 동일하서나 상이하고, 각각 독립적으로 CR", N, SiR", P 또는 GeR"이며,R', R", R"', R1, R2, R10 내지 R17은 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기; 니트로기; 시아노기; 카복실기; 히드록시기; 치환 또는 비치환된 카보닐기; 술포닐기; 치환 또는 비치환된 알킬기; 치환 또는 비치환된 알릴기; 치환 또는 비치환된 알콕시기; 치환 또는 비치환된 시클로알킬기; 치환 또는 비치환된 알케닐기; 치환 또는 비치환된 에스터기; 치환 또는 비치환된 아미드기; 치환 또는 비치환된 에테르기; 치환 또는 비치환된 술포닐기; 치환 또는 비치환된 술폭시기; 치환 또는 비치환된 아릴알킬기; 치환 또는 비치환된 아릴기; 또는 N, O, S 및 Se 원자 중 1개 이상을 포함하는 치환 또는 비치환된 헤테로고리기이고,R3 및 R4는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 또는 전자끌개이다.
- 청구항 1에 있어서,상기 공중합체는 하기 화학식 1-1-1 내지 화학식 1-1-17 중 어느 하나로 표시되는 것인 공중합체:[화학식 1-1-1][화학식 1-1-2][화학식 1-1-3][화학식 1-1-4][화학식 1-1-5][화학식 1-1-6][화학식 1-1-7][화학식 1-1-8][화학식 1-1-9][화학식 1-1-10][화학식 1-1-11][화학식 1-1-12][화학식 1-1-13][화학식 1-1-14][화학식 1-1-15][화학식 1-1-16][화학식 1-1-17]n은 1 내지 10,000의 정수이다.
- 청구항 1 내지 7 중 어느 한 항에 있어서,상기 공중합체의 수평균 분자량은 500 g/mol 내지 1,000,000 g/mol인 공중합체.
- 청구항 1 내지 7 중 어느 한 항에 있어서,상기 공중합체의 분자량 분포는 1 내지 100인 공중합체.
- 제1 전극; 상기 제1 전극과 대향하여 구비되는 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비되고, 광활성층을 포함하는 1층 이상의 유기물층을 포함하고, 상기 유기물층 중 1층 이상은 청구항 1 내지 7 중 어느 하나의 항에 따른 공중합체를 포함하는 것인 유기 태양 전지.
- 청구항 10에 있어서,상기 유기물층은 정공 수송층, 정공 주입층 또는 정공 수송과 정공 주입을 동시에 하는 층을 포함하고,상기 정공 수송층, 정공 주입층 또는 정공 수송과 정공 주입을 동시에 하는 층은 상기 공중합체를 포함하는 유기 태양 전지.
- 청구항 10에 있어서,상기 유기물층은 전자주입층, 전자 수송층 또는 전자 주입과 전자 수송을 동시에 하는 층을 포함하고,상기 전자주입층, 전자 수송층 또는 전자 주입과 전자 수송을 동시에 하는 층은 상기 공중합체를 포함하는 유기 태양 전지.
- 청구항 10에 있어서,상기 광활성층은 전자 주개 및 전자 받개로 이루어진 군에서 선택되는 1 또는 2 이상을 포함하고,상기 전자 주개는 상기 공중합체를 포함하는 것인 유기 태양 전지.
- 청구항 13에 있어서,상기 전자 받개는 플러렌, 플러렌 유도체, 탄소 나노 튜브, 탄소 나노 튜브 유도체, 바소쿠프로인, 반도체성 원소, 반도체성 화합물 및 이들의 조합으로 이루어진 군에서 선택되는 것인 유기 태양 전지.
- 청구항 13에 있어서,상기 전자 주개 및 전자 받개는 벌크 헤테로 정션(BHJ)을 구성하는 것인 유기 태양 전지.
- 청구항 10에 있어서,상기 광활성층은 n형 유기물층 및 p형 유기물층을 포함하는 이층 박막(bilayer)구조이며,상기 p형 유기물층은 상기 공중합체를 포함하는 것인 유기 태양 전지.
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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US20190023835A1 (en) * | 2016-01-27 | 2019-01-24 | Lg Chem, Ltd. | Copolymer and organic solar cell comprising same |
US11773210B2 (en) * | 2016-01-27 | 2023-10-03 | Lg Chem, Ltd. | Copolymer and organic solar cell comprising same |
CN107793435A (zh) * | 2016-08-29 | 2018-03-13 | 中国科学院化学研究所 | 一种共轭有机小分子太阳能电池受体材料化合物及其制备方法与应用 |
CN107793435B (zh) * | 2016-08-29 | 2020-09-22 | 中国科学院化学研究所 | 一种共轭有机小分子太阳能电池受体材料化合物及其制备方法与应用 |
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KR101698666B1 (ko) | 2017-01-23 |
CN106164126B (zh) | 2018-10-12 |
TW201600534A (zh) | 2016-01-01 |
US10355214B2 (en) | 2019-07-16 |
EP3124519B1 (en) | 2021-05-05 |
CN106164126A (zh) | 2016-11-23 |
US20180166633A1 (en) | 2018-06-14 |
KR20150114416A (ko) | 2015-10-12 |
TWI553036B (zh) | 2016-10-11 |
EP3124519A4 (en) | 2017-11-08 |
EP3124519A1 (en) | 2017-02-01 |
JP6419838B2 (ja) | 2018-11-07 |
JP2017511407A (ja) | 2017-04-20 |
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