CN103346259B - A kind of organic solar batteries - Google Patents
A kind of organic solar batteries Download PDFInfo
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- CN103346259B CN103346259B CN201310272060.4A CN201310272060A CN103346259B CN 103346259 B CN103346259 B CN 103346259B CN 201310272060 A CN201310272060 A CN 201310272060A CN 103346259 B CN103346259 B CN 103346259B
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Abstract
The invention discloses a kind of organic solar batteries, comprising: the anode collecting hole; Collect the negative electrode of electronics; Produce the photoactive layer that hole-electron is right, between described anode and negative electrode; Electron transfer layer, between described negative electrode and photoactive layer; Wherein, described electron transfer layer is organic molecule layer, doped with luminescent material in described organic molecule layer, photoactive layer is not absorbed or the inefficient wave band of extinction, described luminescent material absorbs this wave band energy, and launch the optical band being easy to be absorbed by photoactive layer, and then improve the efficiency of light absorption of photoactive layer, effectively improve the photoelectric conversion efficiency of solar cell.
Description
Technical field
The invention belongs to area of solar cell, be specifically related to a kind of organic solar batteries.
Background technology
The development need mass energy in epoch, and fossil energy is widely used as direct primary energy and exhaustion day by day, becomes the bottleneck of developmental limitation.Solar energy, as one clean energy resource and be subject to paying close attention to more and more widely endlessly, wherein, makes high efficiency solar cell and converts solar energy into electrical energy the important method becoming and utilize solar energy.Solar cell is mainly divided into inorganic solar cell (forming primarily of silica-based or other inorganic material substrate fabrication) and organic solar batteries, organic solar batteries is easy to get because having material, cheap, be easy to the advantage such as large-area manufacturing, flexibility and day by day come into one's own, therefore also become one gradually and have promising novel solar battery.
The structure of organic solar batteries comprises: anode, hole transmission layer, photoactive layer, electron transfer layer and negative electrode, its operation principle is mainly and adopts the organic substance with photo-sensitive characteristic as photoactive layer material, due to the locality of electric charge in organic substance, sunlight enters into photoactive layer by transparent anode, be excited after the organic substance absorption sunlight of photoactive layer, thus generation electron-hole pair, namely exciton (or being called charge carrier) is produced, described electronics and hole are also dissociated to described electron transfer layer and hole transmission layer respectively, and be finally transferred to described negative electrode and anode, thus generation photoelectric current, whole process also can be described as photovoltaic effect.
As everyone knows, organic solar batteries is compared with silica-based class inorganic solar cell, and its photoelectric conversion efficiency is still lower, and therefore improving photoelectric conversion efficiency is that organic solar batteries realizes the required Key technique problem solved of industrialization.And due to the restriction of the organic substance objective reality energy gap in organic solar batteries photoactive layer, organic substance all fully can not be responded the spectrum of all wave bands, namely the lower optical band of the energy in solar spectrum can not the organic substance of exciting light active layer to produce exciton, thus result also in organic solar batteries for the absorption of sunlight is limitation, therefore, under the prerequisite not affecting other performance, the efficiency of light absorption improving photoactive layer becomes the effective important means improving organic solar batteries.At present more existing multiple technologies about the efficiency of light absorption improving photoactive layer are open, as by improving its efficiency of light absorption to the Optimal improvements of the concrete the selection of material of photoactive layer organic substance.The and for example earlier application patent of the applicant, its publication number is CN102751439A, disclose a kind of organic solar batteries, by it by being provided with metal nanoparticle in electron transfer layer and/or hole transmission layer, the absorption of photoactive layer to light is enhanced by the surface plasma bulk effect of metal nanoparticle, the photoelectric current of solar cell is increased, thus significantly improves the electricity conversion of organic solar batteries device.
Above method effectively improves the efficiency of light absorption of organic solar batteries all to a certain extent, but obviously remain inadequate for the industrialization demand effectively realizing organic solar batteries, the efficiency of light absorption how improving photoactive layer further remains important and the anxious technology proposition treating constantly research at present.
Summary of the invention
In view of this, the applicant is based on the professional knowledge of the research experience for many years endeavouring to be engaged at organic solar batteries and accumulation, checking is groped through great many of experiments, the present patent application is proposed, the object of the invention is to propose a kind of organic solar batteries, effectively can improve the efficiency of light absorption of photoactive layer, thus improve the photoelectric conversion efficiency of organic solar batteries further, accelerate the industrialization process realizing organic solar batteries.
A kind of organic solar batteries that object according to the present invention proposes, wherein, comprising:
Collect the anode in hole;
Collect the negative electrode of electronics;
Produce the photoactive layer that hole-electron is right, between described anode and negative electrode;
Electron transfer layer, between described negative electrode and photoactive layer;
Wherein, described electron transfer layer is organic molecule layer, doped with luminescent material in described organic molecule layer, photoactive layer is not absorbed or the inefficient wave band of extinction, described luminescent material absorbs this wave band energy, and launch the optical band being easy to be absorbed by photoactive layer, and then improve the efficiency of light absorption of photoactive layer.
Preferably, also comprise hole transmission layer, between described anode and photoactive layer.
Preferably, described luminescent material is selected from Ir (ppy) 3, Ir (ppy) 2 (acac), Ir (mppy) 3, Ir (pq) 2 (acac), Ir (bt) 2 (acac), Ir (MDQ) 2 (acac), Ir (pq) 3, Ir (flq) 2 (acac), Ir (fliq) 2 (acac), Ir (piq) 2 (acac), Ir (piq) 3, Ir (btp) 2 (acac), C545T, DCM, DCJTB, Perylene, DPAVBi, DPAVB, BDAVBi, the mixing of one or more in FirPic or Rubrene.
Preferably, the organic molecule of described organic molecule layer is the mixing of one or more in Alq3, BCP, BPhen, Liq, BAlq, 3TPYMB, TAZ or TPBi.
In order to save word length, the present invention mainly have employed organic molecule and simplifies title sign, and concrete corresponding namelist asks for an interview following table 1:
The corresponding namelist of table 1
Preferably, in described organic molecule layer, the doping content of luminescent material is equal to or less than 50%.Further preferably, in described organic molecule layer, the doping content of luminescent material can be selected at 1-10%.
Preferably, the thickness range of described electron transfer layer is at 1-200nm.
In traditional organic solar batteries, general employing makes transparent conductive oxide (TCO on glass or plastic; TransparentConductingOxide) film plating layer, and will the glass of TCO or the plastic base anode substrate as battery be coated with, then on anode substrate, hole collection layer is formed, described hole collection layer material generally adopts poly-3,4-ethene dioxythiophene: the conducting polymers such as poly-4-toluenesulfonic acid (PEDOT:PSS), but find in actual applications, the TCO film plating layer of the material meeting antianode in hole collection layer produces corrosion, has had a strong impact on the useful life of organic solar batteries.
For solving the problems of the technologies described above, preferably, solar cell of the present invention is inverted structure, and described inverted structure refers to that described negative electrode is as sunlight receiving plane, and sunlight enters described photoactive layer by negative electrode; Further preferably, described negative electrode makes formation on substrate, and its material is the TCO of transparent material or the TCO containing alloy, and the material of described anode is metal.
Preferably, described hole collection layer can be transition metal oxide or conducting polymer.
Preferably, also comprise for regulating light at the resilient coating of the intensity distributions of each layer, described resilient coating and described negative electrode or described anode adjacent.
Preferably, the manufacture method of described electron transfer layer is selected from common evaporation, solution spin coating, spraying, silk screen printing, ink jet printing, chemical synthesis, electron beam deposition or self assembly.
Natch; the present invention can in conjunction with the applicant in first optimisation technique scheme and other related art scheme formerly occurred to improve the photoelectric conversion efficiency of organic solar batteries of the present invention further; namely implementation result can be better; believe that these combine the routine all belonging to those skilled in the art and select; and belong to claims of the present invention equally, repeat at this no longer concrete word.
Organic solar batteries provided by the invention, due to the mixed layer that its electron transfer layer is made up of with certain proportion luminescent material and organic molecule, photoactive layer is not absorbed or the inefficient wave band of extinction, described luminescent material absorbs this wave band energy, and launch the optical band being easy to be absorbed by photoactive layer organic substance, indirectly expand photoactive layer organic solar spectrum absorption bands scope, and then improve the efficiency of light absorption of photoactive layer, effectively improve the photoelectric conversion efficiency of solar cell, further, solar cell is set to inverted structure by the present invention, by described negative electrode as sunlight receiving plane, sunlight enters described photoactive layer by negative electrode, described negative electrode makes formation on substrate, when its material adopts the TCO of preferred transparent material or the TCO containing alloy, when described anode material is metal, due to the organic molecule layer that electron transfer layer of the present invention is neutral, can not the TCO material of corroding cathode, under the prerequisite meeting identical performance, the TCO thin film layer that also effectively prevent the material antianode of the hole collection layer in the organic solar batteries of existing non-inverted structure causes the situation of corrosion to occur, substantially prolongs the useful life of solar cell.
Accompanying drawing explanation
Accompanying drawing 1 is the structure distribution schematic diagram of the first way of example of organic solar batteries of the present invention;
Accompanying drawing 2 is structure distribution schematic diagrames of the 4th way of example of organic solar batteries of the present invention;
Accompanying drawing 3 is structure distribution schematic diagrames of the 5th way of example of organic solar batteries of the present invention;
Accompanying drawing 4 is structure distribution schematic diagrames of the 6th way of example of organic solar batteries of the present invention;
Accompanying drawing 5 is structure distribution schematic diagrames of the 7th way of example of organic solar batteries of the present invention;
Accompanying drawing 6 is making step order block diagrams of the first way of example of organic solar batteries of the present invention;
Accompanying drawing 7 is making step order block diagrams of the 4th way of example of organic solar batteries of the present invention;
Accompanying drawing 8 is making step order block diagrams of the 5th way of example of organic solar batteries of the present invention;
Accompanying drawing 9 is making step order block diagrams of the 6th way of example of organic solar batteries of the present invention;
Accompanying drawing 10 is making step order block diagrams of the 7th way of example of organic solar batteries of the present invention;
Accompanying drawing 11 is that the organic solar batteries of the of the present invention first to the 3rd way of example and prior art is at 100W/cm
2the current-voltage curve comparison diagram that condition obtains under irradiating;
Accompanying drawing 12 is the present invention first to the organic solar batteries of the 3rd way of example and prior art at 100W/cm
2the external quantum efficiency curve comparison figure that condition obtains under irradiating.
Embodiment
The embodiment of the invention discloses a kind of organic solar batteries, wherein, comprising:
Collect the anode in hole;
Collect the negative electrode of electronics;
Produce the photoactive layer that hole-electron is right, between described anode and negative electrode;
Electron transfer layer, between described negative electrode and photoactive layer;
Hole transmission layer, between described anode and photoactive layer;
Wherein, described electron transfer layer is organic molecule layer, doped with luminescent material in described organic molecule layer, photoactive layer is not absorbed or the inefficient wave band of extinction, described luminescent material absorbs this wave band energy, and launch the optical band being easy to be absorbed by photoactive layer, and then improve the efficiency of light absorption of photoactive layer;
Described luminescent material is selected from Ir (ppy) 3, Ir (ppy) 2 (acac), Ir (mppy) 3, Ir (pq) 2 (acac), Ir (bt) 2 (acac), Ir (MDQ) 2 (acac), Ir (pq) 3, Ir (flq) 2 (acac), Ir (fliq) 2 (acac), Ir (piq) 2 (acac), Ir (piq) 3, Ir (btp) 2 (acac), C545T, DCM, DCJTB, Perylene, DPAVBi, DPAVB, BDAVBi, the mixing of one or more in FirPic or Rubrene, the material that other phase is equivalent can certainly be adopted,
The organic molecule of described organic molecule layer is the mixing of one or more in Alq3, BCP, BPhen, Liq, BAlq, 3TPYMB, TAZ or TPBi, can certainly adopt the material that other phase is equivalent.
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only comparatively preferred embodiment mode more of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other drawings and Examples mode can also be obtained according to these drawings and Examples.
First way of example
It is the structure distribution schematic diagram of the first way of example of organic solar batteries of the present invention see Fig. 1, Fig. 1.As shown in Figure 1, organic solar batteries 10 is inverted structure, specifically comprises a substrate 11, and the material of substrate 11 can be hard, as glass or quartz, also can be flexible, as flexible macromolecule.The macromolecular material that can be used as flexible base, board includes, but is not limited to: Polyethylene Naphthalate (PEN; Polyethylenenaphthalate), polyethylene terephthalate (PET; Polyethyleneterephthalate), polyamide (polyamide), polymethyl methacrylate (Polymethylmethacrylate), Merlon (Polycarbonate) or polyurethane (polyurethane).Flexible base, board can be applicable on continuous process, such as the coating of net stacked or laminated processing procedure.In addition, substrate, except isolation material, also can use conductive material, the metal materials such as such as titanium, aluminium, copper, nickel.The thickness of substrate is not particularly limited, and can do suitable adjustment according to actual needs.
Substrate 11 is provided with negative electrode 12 on the surface, and negative electrode 12, as sunlight receiving plane, is transparent material, and concrete material can select TCO or metal (as translucent Au), arrives photoactive layer 13 to make sunlight by negative electrode 12.Preferred negative electrode 12 material is TCO or the TCO containing alloy (doped), includes, but is not limited to: tin oxide, fluorine doped tin oxide, tin indium oxide (ITO; And/or azo oxide (AZO) etc. indiumtinoxide); Negative electrode 12 can be formed on the substrate 11 by any traditional method, such as vapour deposition, sputter, evaporation etc.
Negative electrode 12 is formed with the organic molecule layer doped with luminescent material, is electron transfer layer 13, wherein, described luminescent material is C545T, and the organic molecule of described organic molecule layer is Alq3, and wherein the doping content of C545T is 3%; The thickness range of described electron transfer layer is at 1-200nm, and concrete thickness can be selected by actual needs.
The manufacture method of described electron transfer layer 13 is selected from common evaporation, solution spin coating, spraying, silk screen printing, ink jet printing, chemical synthesis, electron beam deposition or self assembly, or obtained by the method that other phase is equivalent, wherein, solution is spin-coated as preferred manufacture method, not only there is the advantage of energy savings and resource, and simple to operate.
Electron transfer layer 13 is formed with photoactive layer 14, photoactive layer 14 comprises donor material and acceptor material, described donor material and acceptor material can be the bulk heterojunction Rotating fields of mixing manufacture, also can be the duplex hetero junction layer structures that are made of film forming respectively; Preferably, described donor material is conjugated highpolymer, and conjugated highpolymer includes but not limited to: poly-(3-hexyl thiophene) (P3HT; Poly-3-hexylthiophene), polyacetylene (Polyacetylene), poly-different benzothiophene (PITN; Polyisothianaphthene), polythiophene (PT; Polythiophene), polypyrrole (PPr; Polypyrrole); Polyfluorene (PF; Polyfluorene), polyphenyl (PPP; Poly(p-phenylene)), polyphenylene ethylene (PPV; Poly (phenylenevinylene)) derivative; Described donor material also can be conjugation organic molecule, as CuPc (CuPc), sub-phthalocyanine (SubPc; Chloroboronsubphtha-locyanine), SubNc(chloroboronsubnaphthalocyanine), CuPc (ZnPc), titanium cyanines oxygen titanium (OTiPc), pentacene (Pentacene) etc.; Described acceptor material includes, but is not limited to: poly-(cyano group phenylene ethylene), fullerene and derivative, organic molecule, organic metal, inorganic nano-particle, be preferably fullerene and derivative thereof, as PCBM((6,6)-Phenyl-C61-butyricacidmethylester), PC
70bM((6,6)-Phenyl-C71-butyricacidmethylester), ICBA (indene-C60bisadduct), IC
70bA (indene – C70bisadduct) etc.
When making photoactive layer 14, preferably, donor material and acceptor material mixing are obtained donor-receiver mixed solution in a solvent, then the donor-receiver mixed solution of gained is deposited on electron transfer layer 13 in the mode of rotary coating; Except rotary coating, other conventional depositional mode also comprises: spraying, silk screen printing, ink jet printing etc., or is obtained by the method that other phase is equivalent.
Photoactive layer 14 is also formed with hole transmission layer 15, and described hole collection layer 15 can be transition metal oxide or conducting polymer.Specifically preferably, described transition metal oxide includes but not limited to: molybdenum trioxide (MoO
3), tungstic acid (WO
3), nickel oxide (NiO) and/or vanadic oxide (V
2o
5), the material that also can be equal to for other phase, as zinc oxide, titanium oxide etc.; Described conducting polymer includes but not limited to: PEDOT:PSS(poly (3,4-ethylenedioxythiophene): poly (styrenesulfonate)), or the well known materials that other phase is equivalent.
Described hole transmission layer 15 can be obtained by the method being total to evaporation, also can be obtained by methods such as solution spin coating, spraying, silk screen printing, ink jet printings, or is obtained by the method that other phase is equal to.
Hole transmission layer 15 is formed with anode 16, the material of anode 16 can be metal or conductive oxide, be preferably light tight or that light transmittance is low metal, such as, the alloy of one or more in aluminium (Al), magnesium (Mg), silver (Ag), gold (Au), platinum (Pt), copper (Cu), as almag (Mg/Al), silver-colored magnesium alloy (Ag/Ag), described metal can also be layer structure, as being lithium fluoride: aluminium (LiF/Al).The manufacture method of anode adopts vapour deposition method to deposit usually, certainly also can adopt other deposition process.
See Fig. 6, Fig. 6 is the making step order block diagram of the organic solar batteries 10 of this first way of example, when each structure selects concrete preferred material: substrate 11 material selection transparent conducting glass, negative electrode 12 selects transparent ito thin film, the donor material of photoactive layer 14 selects P3HT (poly (3-hexylthiophene)), acceptor material selects PCBM((6,6)-Phenyl-C61-butyricacidmethylester), hole transmission layer 15 material selection MoO
3, anode 16 material selection Al, selects in conjunction with concrete preferred material, illustrates each step shown in Fig. 6:
Step 101: make negative electrode 12 on the substrate 11, its concrete production process can be:
Select transparent conducting glass to be substrate 11, be coated with transparent ito thin film on the substrate 11, the transparent ito thin film of this formation is as negative electrode 12.
After the step being coated with transparent ito thin film on glass substrate 11 completes, the substrate being coated with TCO thin film is put into ultrasonic water bath, and utilize acetone, absolute ethyl alcohol and deionized water to carry out ultrasonic cleaning as solvent to described transparent ito thin film respectively, scavenging period can be selected within the scope of 20-30min, then puts into drying box and dries.
Step 102: make electron transfer layer 13 on the cathode 12, its concrete production process can be:
ITO substrate above-mentioned steps 101 obtained is placed on the sucker of spin coating instrument, and be the organic molecule mixed solution of the C545T of 3% to ITO substrate spin coating doping content, wherein organic molecule is Alq
3spin coating speed controls within the scope of 500-10000r/min, thickness requirement according to electron transfer layer arranges spin-coating time, after spin coating completes, carry out thermal annealing to electron transfer layer, annealing temperature controls at 50-150 degree Celsius, also can set according to actual needs, annealing time can control between about 5 and 30 minutes, also can set according to actual needs.
Step 103: make photoactive layer 14 on electron transfer layer 13, its concrete production process can be:
The ITO substrate depositing electron transfer layer 13 above-mentioned steps 102 obtained puts into the glove box being full of nitrogen, spin on polymers P3HT:PCBM mixed solution on electron transfer layer 13.Concrete rotary speed when carrying out spin coating and spin-coating time can set as required, if rotary speed during spin coating can be 300-10000r/min, spin-coating time is 10-240sec, and naturally evaporate into dry after spin coating completes, the time of volatilization can control at 20-200min, then in glove box to ITO silicon to assigned temperature (as, can between 100-200 degree Celsius), and keep changing assigned temperature certain hour (as 5-30min), until the photoactive layer 14 formed by polymer P 3HT:PCBM mixed solution is more stable.
Step 104: make hole collection layer 15 on photoactive layer 14, its concrete production process can be:
First the ITO substrate depositing photoactive layer 14 and electron transfer layer 13 above-mentioned steps 103 obtained is moving in vacuum evaporation cabin, and with the evaporation rate set evaporation MoO3 layer, the MoO3 layer of this formation is as hole transmission layer 15.
Step 105: make anode 16 on hole collection layer 15, its concrete production process can be:
The Al film of depositing and setting thickness on hole transmission layer 15, the Al film of this formation is as the anode 16 of organic solar batteries.The speed of depositing Al can be to set as required between 0.1-1nm/sec.
Second way of example
Can see also the structure of the organic solar batteries shown in Fig. 1, this second way of example is compared with the first way of example, difference is only, negative electrode 12 is formed with the organic molecule layer doped with luminescent material, is electron transfer layer 13, wherein, described luminescent material is C545T, the organic molecule of described organic molecule layer is Alq3, and the doping content of described C545T is 7%, and all the other technical schemes are all with the first way of example.
3rd way of example
Can see also the structure of the organic solar batteries shown in Fig. 1, this the 3rd way of example is compared with the first way of example, difference is only, negative electrode 12 is formed with the organic molecule layer doped with luminescent material, is electron transfer layer 13, wherein, described luminescent material is C545T, the organic molecule of described organic molecule layer is Alq3, and the doping content of described C545T is 10%, and all the other technical schemes are all with the first way of example.
The implementation result of embodiments of the invention and prior art has carried out contrasting (with four of solar cell central characteristics parameters---open circuit voltage V by the application
oC, short-circuit current density J
sC, fill factor, curve factor FF photoelectric conversion efficiency n, come specifically to contrast, specifically see the following form 2:
The implementation result contrast table of table 2 embodiment of the present invention mode and prior art
As can be seen from upper table 2, compared with the electron transfer layer of non-doped luminescent material, the open circuit voltage of the organic solar batteries of first embodiment of the invention mode and the second way of example is substantially constant, and its short-circuit current density, fill factor, curve factor, conversion efficiency have had raising all relatively relative to the prior art of sequence number 1.
Current-voltage curve comparison diagram as shown in Figure 11 and the external quantum efficiency curve comparison figure shown in Figure 12 more can intuitively find out, photoelectric current and the photoelectric conversion efficiency of the organic solar batteries device of first embodiment of the invention mode and the second way of example obtain effective raising.Also show simultaneously, after luminescent material is doped to organic molecule formation electron transfer layer by the present invention, also effectively increase the free charge of electron transfer layer, namely improve the electric conductivity of organic solar batteries device, can further improve the photoelectric conversion efficiency of organic solar batteries.
4th way of example
It is the structure distribution schematic diagram of the 4th way of example of organic solar batteries of the present invention see Fig. 2, Fig. 2.Shown in Figure 2, organic solar batteries 10 is non-inverted structure, specifically comprise substrate 21 and be formed at anode 22, hole transmission layer 23, photoactive layer 24, electron transfer layer 25 and the negative electrode 26 on substrate 21 successively, this the 4th way of example is compared with the first way of example, its main distinction is: anode 22 directly makes formation on the surface at substrate 21, anode 22 is as sunlight receiving plane, for transparent material, negative electrode 26 is light tight metal material, and the change of production order.
The making step order block diagram of the organic solar batteries 10 of basis shown in Figure 7 4th way of example, its production order comprises:
Step 201: make anode 22 on the base plate (21;
Step 202: make hole collection layer 23 on anode 22;
Step 203: make photoactive layer 24 on hole collection layer 23;
Step 204: make electron transfer layer 25 on photoactive layer 24;
Step 205: make negative electrode 26 on electron transfer layer 25;
All the other concrete structures and manufacture method and principle all can with first or second or the 3rd way of example, and this is no longer going to repeat them.
5th way of example
See the organic solar energy cell structure distribution schematic diagram that Fig. 3, Fig. 3 are fifth embodiment of the invention mode.Shown in Figure 3, solar cell 10 is inverted structure, specifically comprise substrate 31, and the negative electrode 32 be formed at successively on substrate 31, resilient coating 37, electron transfer layer 33, photoactive layer 34, hole transmission layer 35 and anode 36, this the 5th way of example is compared with the first way of example, its main distinction is, also comprise for regulating light at the resilient coating 37 of the intensity distributions of each layer, described resilient coating 37 is between described negative electrode 32 and electron transfer layer 33, namely resilient coating 37 is adjacent with negative electrode 32, preferably, the material of described resilient coating 37 is transition metal oxide or fluoride.
The making step order block diagram of the organic solar batteries 10 of basis shown in Figure 8 5th way of example, its production order comprises:
Step 301: make negative electrode 32 on the substrate 31;
Step 302: make resilient coating 37 on negative electrode 32;
Step 303: make electron transfer layer 33 on resilient coating 37;
Step 304: make photoactive layer 34 on electron transfer layer 33;
Step 305: make hole collection layer 35 on photoactive layer 34;
Step 306: make anode 36 on hole collection layer 35;
Preferably, the concrete grammar that negative electrode 32 makes resilient coating 37 can adopt and be selected from thermal evaporation, sputtering, sol-gel, electron beam deposition, chemical synthesis or self assembly, or be selected from other any conventional methods, believe that concrete process is the common practise of this area; All the other concrete structures and manufacture method and principle all can with first or second or the 3rd way of example, and this is no longer going to repeat them.
6th way of example
See the organic solar energy cell structure distribution schematic diagram that Fig. 4, Fig. 4 are sixth embodiment of the invention mode.Shown in Figure 4, solar cell 10 is inverted structure, specifically comprise substrate 41 and be formed at negative electrode 42, electron transfer layer 43, photoactive layer 44, hole transmission layer 45, resilient coating 47 and the anode 46 on substrate 41 successively, this the 6th way of example is compared with the 5th way of example, its main distinction is, described resilient coating 47 is between described anode 46 and hole transmission layer 45, namely resilient coating 47 is adjacent with anode 46, preferably, the material of described resilient coating 47 is transition metal oxide or fluoride.
The making step order block diagram of the organic solar batteries 10 of basis shown in Figure 9 6th way of example, its production order comprises:
Step 401: make negative electrode 42 on substrate 41;
Step 402: make electron transfer layer 43 on negative electrode 42;
Step 403: make photoactive layer 44 on electron transfer layer 43;
Step 404: make hole collection layer 45 on photoactive layer 44;
Step 405: make resilient coating 47 on hole collection layer 45;
Step 406: make anode 46 on resilient coating 47;
All the other concrete structures and manufacture method and principle all can with the 5th way of example, and this is no longer going to repeat them.
7th way of example
See the organic solar energy cell structure distribution schematic diagram that Fig. 5, Fig. 5 are seventh embodiment of the invention mode.Shown in Figure 5, solar cell 10 is inverted structure, specifically comprise substrate 51 and be formed at negative electrode 52, electron transfer layer 53, photoactive layer 54 and the anode 55 on substrate 51 successively, this the 7th way of example is compared with the first way of example, its main distinction is, does not comprise hole transmission layer.
The making step order block diagram of the organic solar batteries 10 of basis shown in Figure 10 5th way of example, its production order comprises:
Step 501: make negative electrode 52 on the substrate 51;
Step 502: make electron transfer layer 53 on negative electrode 52;
Step 503: make photoactive layer 54 on electron transfer layer 53;
Step 504: make anode 55 on photoactive layer 54;
All the other concrete structures and manufacture method and principle all can with first or second or the 3rd or the 5th or the 6th way of example, and this is no longer going to repeat them.
Transparent material of the present invention means the good material of light transmittance, comprises transparent, translucent, that transparency is general material ranges.
Natch, be further described on the basis of specification technical scheme content in conjunction with above way of example, identical with the of the present invention 5th or the 6th way of example principle, in core technology content basis disclosed in this invention, the structure that solar cell of the present invention more can also be optimized in conjunction with other is to improve implementation result of the present invention further, believe that these combine the routine belonging to those skilled in the art and select or common practise, as long as have employed core technology content of the present invention, all belong to claims of the present invention, therefore concrete optimizing structure will not enumerate.
Technology contents the present invention not being specifically related to or launching, as the concrete technology parameter etc. in organic solar batteries 10 making step believes that the routine being those skilled in the art is selected, simultaneously, also can see correlation technique content disclosed in the earlier application patent of the applicant, patent publication No. is CN102751439A, no longer carries out concrete word launch to describe at this.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. an organic solar batteries, is characterized in that, comprising:
Collect the anode in hole;
Collect the negative electrode of electronics;
Produce the photoactive layer that hole-electron is right, between described anode and negative electrode;
Electron transfer layer, between described negative electrode and photoactive layer;
Wherein, described electron transfer layer is organic molecule layer, doped with luminescent material in described organic molecule layer, photoactive layer is not absorbed or the inefficient wave band of extinction, described luminescent material absorbs this wave band energy, and launch the optical band being easy to be absorbed by photoactive layer, and then improve the efficiency of light absorption of photoactive layer.
2. organic solar batteries as claimed in claim 1, is characterized in that, also comprise hole transmission layer, between described anode and photoactive layer.
3. organic solar batteries as claimed in claim 1, it is characterized in that, described luminescent material is selected from Ir (ppy) 3, Ir (ppy) 2 (acac), Ir (mppy) 3, Ir (pq) 2 (acac), Ir (bt) 2 (acac), Ir (MDQ) 2 (acac), Ir (pq) 3, Ir (flq) 2 (acac), Ir (fliq) 2 (acac), Ir (piq) 2 (acac), Ir (piq) 3, Ir (btp) 2 (acac), C545T, DCM, DCJTB, Perylene, DPAVBi, DPAVB, BDAVBi, the mixing of one or more in FirPic or Rubrene.
4. organic solar batteries as claimed in claim 1, it is characterized in that, the organic molecule of described organic molecule layer is the mixing of one or more in Alq3, BCP, BPhen, Liq, BAlq, 3TPYMB, TAZ or TPBi.
5. organic solar batteries as claimed in claim 1, it is characterized in that, in described organic molecule layer, the doping content of luminescent material is equal to or less than 50%.
6. organic solar batteries as claimed in claim 1, it is characterized in that, the thickness range of described electron transfer layer is at 1-200nm.
7. organic solar batteries as claimed in claim 1, it is characterized in that, described solar cell is inverted structure, and described inverted structure refers to that described negative electrode is as sunlight receiving plane, and sunlight enters described photoactive layer by negative electrode.
8. organic solar batteries as claimed in claim 7, it is characterized in that, described negative electrode makes formation on substrate, and its material is the TCO of transparent material or the TCO containing alloy, and the material of described anode is metal.
9. organic solar batteries as claimed in claim 1, is characterized in that, also comprising for regulating light at the resilient coating of the intensity distributions of each layer, described resilient coating and described negative electrode or described anode adjacent.
10. organic solar batteries as claimed in claim 7 or 8, it is characterized in that, the manufacture method of described electron transfer layer is selected from common evaporation, solution spin coating, spraying, silk screen printing, ink jet printing, chemical synthesis, electron beam deposition or self assembly.
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| CN105006523A (en) * | 2015-08-26 | 2015-10-28 | 电子科技大学 | Iridium complex doped triplet solar cell |
| CN110172275A (en) * | 2019-05-22 | 2019-08-27 | 深圳市华星光电半导体显示技术有限公司 | Electron transfer layer ink and preparation method thereof, electroluminescent device |
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| US6387546B1 (en) * | 1998-05-19 | 2002-05-14 | Sanyo Electric Co., Ltd. | Organic electroluminescent device |
| CN102394271A (en) * | 2011-12-01 | 2012-03-28 | 苏州大学 | Organic solar cell and preparation method thereof |
| CN102598334A (en) * | 2009-09-24 | 2012-07-18 | 瑞士材料试验研究所 | Multi layer organic thin film solar cell |
| CN103078057A (en) * | 2013-01-29 | 2013-05-01 | 苏州大学 | Organic solar battery and manufacturing method thereof |
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| US6387546B1 (en) * | 1998-05-19 | 2002-05-14 | Sanyo Electric Co., Ltd. | Organic electroluminescent device |
| CN102598334A (en) * | 2009-09-24 | 2012-07-18 | 瑞士材料试验研究所 | Multi layer organic thin film solar cell |
| CN102394271A (en) * | 2011-12-01 | 2012-03-28 | 苏州大学 | Organic solar cell and preparation method thereof |
| CN103078057A (en) * | 2013-01-29 | 2013-05-01 | 苏州大学 | Organic solar battery and manufacturing method thereof |
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