WO2014119868A1 - 태양전지용 금속 나노 입자의 제조 방법, 그 금속 나노 입자를 포함하는 잉크 조성물 및 이를 사용한 박막의 제조 방법 - Google Patents
태양전지용 금속 나노 입자의 제조 방법, 그 금속 나노 입자를 포함하는 잉크 조성물 및 이를 사용한 박막의 제조 방법 Download PDFInfo
- Publication number
- WO2014119868A1 WO2014119868A1 PCT/KR2014/000618 KR2014000618W WO2014119868A1 WO 2014119868 A1 WO2014119868 A1 WO 2014119868A1 KR 2014000618 W KR2014000618 W KR 2014000618W WO 2014119868 A1 WO2014119868 A1 WO 2014119868A1
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- WO
- WIPO (PCT)
- Prior art keywords
- metal nanoparticles
- nanoparticles
- thin film
- bimetallic
- group
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- 239000010409 thin film Substances 0.000 title claims abstract description 94
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- 229910052760 oxygen Inorganic materials 0.000 description 2
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- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 239000004606 Fillers/Extenders Substances 0.000 description 1
- OPKOKAMJFNKNAS-UHFFFAOYSA-N N-methylethanolamine Chemical compound CNCCO OPKOKAMJFNKNAS-UHFFFAOYSA-N 0.000 description 1
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
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- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
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- CUJRVFIICFDLGR-UHFFFAOYSA-N acetylacetonate Chemical compound CC(=O)[CH-]C(C)=O CUJRVFIICFDLGR-UHFFFAOYSA-N 0.000 description 1
- 230000001476 alcoholic effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- IMUDHTPIFIBORV-UHFFFAOYSA-N aminoethylpiperazine Chemical compound NCCN1CCNCC1 IMUDHTPIFIBORV-UHFFFAOYSA-N 0.000 description 1
- CBTVGIZVANVGBH-UHFFFAOYSA-N aminomethyl propanol Chemical compound CC(C)(N)CO CBTVGIZVANVGBH-UHFFFAOYSA-N 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 235000006708 antioxidants Nutrition 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- GONOPSZTUGRENK-UHFFFAOYSA-N benzyl(trichloro)silane Chemical compound Cl[Si](Cl)(Cl)CC1=CC=CC=C1 GONOPSZTUGRENK-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
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- 229950005499 carbon tetrachloride Drugs 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 150000001787 chalcogens Chemical class 0.000 description 1
- 238000010549 co-Evaporation Methods 0.000 description 1
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- HPXRVTGHNJAIIH-UHFFFAOYSA-N cyclohexanol Chemical compound OC1CCCCC1 HPXRVTGHNJAIIH-UHFFFAOYSA-N 0.000 description 1
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- YADLXYVOUBVKQR-UHFFFAOYSA-N ethane-1,1-dithiol ethane-1,2-dithiol Chemical compound C(C)(S)S.C(CS)S YADLXYVOUBVKQR-UHFFFAOYSA-N 0.000 description 1
- KFGJUQRJVQDJHL-UHFFFAOYSA-N ethanethiol Chemical compound CCS.CCS KFGJUQRJVQDJHL-UHFFFAOYSA-N 0.000 description 1
- XYIBRDXRRQCHLP-UHFFFAOYSA-N ethyl acetoacetate Chemical compound CCOC(=O)CC(C)=O XYIBRDXRRQCHLP-UHFFFAOYSA-N 0.000 description 1
- 229940116333 ethyl lactate Drugs 0.000 description 1
- JBTWLSYIZRCDFO-UHFFFAOYSA-N ethyl methyl carbonate Chemical compound CCOC(=O)OC JBTWLSYIZRCDFO-UHFFFAOYSA-N 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- KLTPDYHAASMFGP-UHFFFAOYSA-N hexan-1-ol Chemical compound CCCCCCO.CCCCCCO KLTPDYHAASMFGP-UHFFFAOYSA-N 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
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- 239000007924 injection Substances 0.000 description 1
- 238000007641 inkjet printing Methods 0.000 description 1
- 239000001995 intermetallic alloy Substances 0.000 description 1
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- FUZZWVXGSFPDMH-UHFFFAOYSA-N n-hexanoic acid Natural products CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 1
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- LJCNRYVRMXRIQR-OLXYHTOASA-L potassium sodium L-tartrate Chemical compound [Na+].[K+].[O-]C(=O)[C@H](O)[C@@H](O)C([O-])=O LJCNRYVRMXRIQR-OLXYHTOASA-L 0.000 description 1
- 229940074439 potassium sodium tartrate Drugs 0.000 description 1
- 235000019260 propionic acid Nutrition 0.000 description 1
- 238000004549 pulsed laser deposition Methods 0.000 description 1
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 1
- IUVKMZGDUIUOCP-BTNSXGMBSA-N quinbolone Chemical compound O([C@H]1CC[C@H]2[C@H]3[C@@H]([C@]4(C=CC(=O)C=C4CC3)C)CC[C@@]21C)C1=CCCC1 IUVKMZGDUIUOCP-BTNSXGMBSA-N 0.000 description 1
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- 239000004065 semiconductor Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007764 slot die coating Methods 0.000 description 1
- 239000005361 soda-lime glass Substances 0.000 description 1
- 235000011006 sodium potassium tartrate Nutrition 0.000 description 1
- 238000003980 solgel method Methods 0.000 description 1
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- ACTRVOBWPAIOHC-XIXRPRMCSA-N succimer Chemical compound OC(=O)[C@@H](S)[C@@H](S)C(O)=O ACTRVOBWPAIOHC-XIXRPRMCSA-N 0.000 description 1
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- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 1
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- 150000003568 thioethers Chemical class 0.000 description 1
- 231100000167 toxic agent Toxicity 0.000 description 1
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- ZIBGPFATKBEMQZ-UHFFFAOYSA-N triethylene glycol Chemical compound OCCOCCOCCO ZIBGPFATKBEMQZ-UHFFFAOYSA-N 0.000 description 1
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- DGVVWUTYPXICAM-UHFFFAOYSA-N β‐Mercaptoethanol Chemical compound OCCS DGVVWUTYPXICAM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
- H01L31/0326—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising AIBIICIVDVI kesterite compounds, e.g. Cu2ZnSnSe4, Cu2ZnSnS4
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- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/05—Metallic powder characterised by the size or surface area of the particles
- B22F1/054—Nanosized particles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/16—Making metallic powder or suspensions thereof using chemical processes
- B22F9/18—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds
- B22F9/24—Making metallic powder or suspensions thereof using chemical processes with reduction of metal compounds starting from liquid metal compounds, e.g. solutions
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K3/02—Elements
- C08K3/08—Metals
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/186—Particular post-treatment for the devices, e.g. annealing, impurity gettering, short-circuit elimination, recrystallisation
- H01L31/1868—Passivation
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
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- C08K2003/085—Copper
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
Definitions
- the present invention relates to a method for producing metal nanoparticles for solar cells, an ink composition comprising the metal nanoparticles, and a method for producing a thin film using the same, and more particularly, to prepare metal nanoparticles for forming a light absorption layer of a solar cell.
- a process of preparing a mixture by mixing the first solution and the second solution, and synthesizing one or more metal nanoparticles by reaction of the mixture and then purifying the metal nanoparticles. It relates to a method for producing a, an ink composition comprising the metal nanoparticles, and a method for producing a thin film using the same.
- Solar cells have been fabricated using silicon (Si) as a light absorbing layer and semiconductor material in an expensive manufacturing process since the early development.
- Si silicon
- CIGS copper-indium-gallium-sulfo-di-selenide, Cu (In, Ga) (S, Se) 2 as a thin film solar cell structure
- Products using light absorbing materials such as have been developed.
- the CIGS-based solar cell is typically composed of a back electrode layer, an n-type junction, and a p-type light absorbing layer.
- Solar cells described with CIGS layers have power conversion efficiencies in excess of 19%.
- the cost and supply of indium (In) have been a major obstacle to the wide range of applications and applicability of thin film solar cells using CIGS-based light absorbing layers.
- CZTS Cu 2 ZnSn (S, Se) 4
- the CZTS has a direct band gap of about 1.0 to 1.5 eV and an absorption coefficient of 10 4 cm ⁇ 1 or more, and has advantages of using Sn and Zn having abundant reserves and low cost.
- CZTS hetero-junction PV cells were first reported in 1996, to date, CZTS-based solar cell technology is lagging behind CIGS 'solar cell technology, and photoelectric efficiency for CZTS cells is still far shorter than that of CIGS. It is a state.
- CZTS thin films can be sputtered, hybrid sputtered, pulsed laser deposition, spray pyrolysis, electrodeposition / thermal sulfurization, E-beam Cu / Zn / Sn / Thermal sulfiding, and sol-gel methods.
- WO2007-134843 discloses a method of forming a CZTS layer by simultaneously or sequentially stacking Cu, Zn, and Sn by vacuum sputtering, followed by heat treatment in an S or Se atmosphere, and some papers.
- (Phys, Stat. Sol. C. 2006, 3, 2844./ Prog. Photovolt: Res. Appl. 2011; 19: 93-96) Cu, Zn, Sn, S, or Se were obtained by vacuum co-evaporation.
- a method of forming a CZTS layer by depositing on a substrate is disclosed.
- the above techniques have the advantage of being able to be deposited in a relatively well controlled state, but have the disadvantage of high process cost because of the use of expensive equipment.
- US2011-0097496 is used as a precursor for forming a CZTS layer by dissolving Cu, Zn, Sn salts in excess of S or Se in hydrazine, and forming a CZTS layer through heat treatment and selenization in a subsequent process.
- a method is disclosed.
- hydrazines containing chalcogen compounds containing excess S or Se are potentially toxic and highly reactive potentially explosive solvents, so solution processes using hydrazines pose high risks and are easy to handle. There is a difficulty in the process.
- CZTS nanoparticles are formed by mixing a solution containing a precursor of Cu, Sn, and Zn with a solution containing S or Se at a high temperature by hot injection.
- US / 2010-035792 discloses the formation of a thin film by heat treatment on a substrate using an ink containing CZTS / Se precursor particles.
- the present invention aims to solve the problems of the prior art as described above and the technical problems that have been requested from the past.
- the inventors of the present application have developed a method of manufacturing metal nanoparticles of Cu, Zn, and / or Sn elements through a specific solution process, and coating the same on the substrate on which the electrode is formed.
- the thin film through the process of selenization after heat treatment, it is confirmed that not only is an inexpensive and safe process possible, but also it can improve the photoelectric efficiency by growing a light absorbing layer for CZTS-based solar cells with high density through selenization.
- the invention has been completed.
- the method of manufacturing the metal nanoparticles according to the present invention is not only a conventional vacuum process but also a solution process, so that the process cost can be lowered and a toxic hydrazine is not used as a solvent for preparing a solution. The risks that can arise in the process can also be eliminated.
- the solvent of the first solution and the second solution is independently of each other water, diethylene glycol (DEG), methanol (methanol), oleylamine, ethylene glycol (ethyleneglycol), It may be one selected from the group consisting of triethylene glycol, dimethyl sulfoxide, dimethyl formamide, and NMP (N-methyl-2-pyrrolidone).
- DEG diethylene glycol
- methanol methanol
- oleylamine ethylene glycol
- ethylene glycol ethylene glycol
- It may be one selected from the group consisting of triethylene glycol, dimethyl sulfoxide, dimethyl formamide, and NMP (N-methyl-2-pyrrolidone).
- the reducing agent included in the first solution may be an organic reducing agent and / or an inorganic reducing agent other than toxic hydrazine, and the like, specifically, LiBH 4 , NaBH 4 , KBH 4 , Ca (BH 4 ) 2 , Mg (BH 4 ) 2 , LiB (Et) 3 H, NaBH 3 (CN), NaBH (OAc) 3 , ascorbic acid and triethanolamine It may be one selected from the group.
- the copper (Cu) salt, zinc (Zn) salt and tin (Sn) salt included in the second solution may include chloride, bromide, iodide, and nitrate ( nitrate, nitrite, sulfate, acetate, acetate, sulfite, acetylacetonate and hydroxide, and may be at least one type of salt selected from the group consisting of In the case of tin (Sn) salts, bivalent and tetravalent salts are not limited and may be used.
- the type of salts included in the second solution may be determined according to the type of the desired metal nanoparticle.
- the mixing ratio of the total amount of the salt and the reducing agent may be 1: 1 to 1:20, for example, in a molar ratio.
- the content of the reducing agent is too small with respect to the salt, the reduction of the metal salt does not occur sufficiently, so that only alloy nanoparticles of too small size or small amount of intermetallic or bimetallic form can be obtained or particles of a desired element ratio are difficult to obtain.
- the content of the reducing agent is included more than 20 times the salt content, there is a problem that it is not smooth to remove the reducing agent and by-products in the purification process.
- the second solution may further include a capping agent.
- the capping agent is included in the solution process to not only control the size and phase of the metal nanoparticles, but also contain atoms such as N, O, and S, and thus the surface of the metal particles by lone pair electrons of the atoms. Easily binds to and wraps the surface to prevent oxidation of metal nanoparticles.
- Such a capping agent is not particularly limited, but for example, sodium L-tartrate dibasic dehydrate, potassium sodium tartrate, sodium acrylate, poly (sodium acrylate) ( Poly (acrylic acid sodium salt)), sodium citrate, trisodium citrate, disodium citrate, sodium gluconate, sodium ascorbate, sorbitol (sorbitol), triethyl phosphate, ethylene diamine, propylene diamine, propylene diamine, ethanedithiol (1,2-ethanedithiol), and ethanethiol (ethanethiol) It may be abnormal.
- the content of the capping agent may be, for example, greater than 0 to 20 moles relative to 1 mole of the metal salt in the mixture of the first solution and the second solution.
- the content of the capping agent is more than 20 times compared to 1 mole of the metal salt, it is not preferable because the purification process of the metal nanoparticles may be difficult and the purity of the particles may be reduced.
- the size of the metal nanoparticles of the alloy form may be about 1 nm to about 1000 nm.
- the metal nanoparticles obtained in the process (iv) may be prepared in the form of bimetallic or intermetallic alloys, and may be one metal nanoparticle or two or more metal nanoparticles depending on reaction conditions. It may be a mixture of these.
- the bimetallic or intermetallic alloy-type metal nanoparticles prepared according to the manufacturing method of the present invention exhibited greater particle growth than the CZTS nanoparticles.
- the increase in volume caused by the addition of group 16 elements in the selenization process through heat treatment not only a high density film can be formed, but also the structure is relatively stable to oxidation so that the heat treatment and selenization process It provides better film quality afterwards.
- the present invention provides a metal nanoparticle produced by the above production method.
- the prepared metal nanoparticles are not limited as long as they contain two or more metals selected from the group consisting of Cu, Sn, and Zn, and in detail, Cu-Sn bimetallic metal nanoparticles and Cu-Zn bis It may be one or more selected from the group consisting of metallic metal nanoparticles, Sn-Zn bimetallic metal nanoparticles, and Cu-Sn-Zn intermetallic metal nanoparticles, more specifically, Cu-Sn bimetallic metal nanoparticles Can be.
- the present invention also provides bimetallic or intermetallic metal nanoparticles comprising two or more metals selected from the group consisting of copper (Cu), zinc (Zn) and tin (Sn).
- an ink composition for producing a light absorption layer which is dispersed in a solvent.
- bimetallic or intermetallic metal nanoparticles are the same as described above in detail, Cu-Sn bimetallic metal nanoparticles, Cu-Zn bimetallic metal nanoparticles, Sn-Zn bimetallic metal nanoparticles Particles, and one or more selected from the group consisting of Cu—Sn—Zn intermetallic metal nanoparticles, and more particularly, Cu—Sn bimetallic metal nanoparticles.
- the ink composition may be supplemented with elements that are insufficient to form a CZTS thin film for various purposes, specifically, to further add S or Se to improve the density of the thin film due to heat treatment, or In order to provide sufficient content of the group element, nanoparticles including S and / or nanoparticles including Se may be further included in addition to the bimetallic or intermetallic metal nanoparticles.
- the ink composition may be prepared by mixing the cargo.
- Nanoparticles containing S or nanoparticles containing Se include ZnS, SnS, SnS 2 , CuS, Cu y S (0.5 ⁇ y ⁇ 2.0), ZnSe, SnSe, SnSe 2 , CuSe, and Cu y Se ( 0.5 ⁇ y ⁇ 2.0), and may be one or more compounds selected from the group consisting of 0.5, and in particular, when Cu—Sn bimetallic metal nanoparticles are used, they may be ZnS or ZnSe.
- composition of the metal is outside the above range, an unintentional secondary phase or oxide may be generated, which is not preferable because these materials cause a decrease in thin film solar cell efficiency.
- the present invention provides a method for producing a thin film including a light absorption layer using the ink composition.
- the ink may be prepared by further dispersing nanoparticles including S and / or nanoparticles including Se in addition to the metal nanoparticles or the metal nanoparticle mixture in a solvent.
- the solvent of step (i) may be used without particular limitation as long as it is a general organic solvent.
- Organic solvents selected from carboxylic acids, phosphines, phosphites, phosphites, phosphates, sulfoxides, and amides may be used alone or among them.
- One or more selected organic solvents may be used in a mixed form.
- the alcohol solvent is ethanol, 1-propanol, 2-propanol, 2-propanol, 1-pentanol, 2-pentanol, 2-pentanol, 1- Hexanol (1-hexanol), 2-hexanol, 2-hexanol, 3-hexanol, heptanol, octanol, octanol, EG (ethylene glycol), DEGMEE (diethylene glycol) monoethyl ether, ethylene glycol monomethyl ether (EGMME), ethylene glycol monoethyl ether (EGMEE), ethylene glycol dimethyl ether (EGDME), ethylene glycol diethyl ether (EGDEE), ethylene glycol monopropyl ether (EGGMP), ethylene glycol monobutyl ether ), 2-methyl-1-propanol, cyclopentanol, cyclohexanol, PGPE (propylene glycol propyl, cycl
- the amine solvent is triethyl amine (triethyl amine), dibutyl amine (dibutyl amine), dipropyl amine (dipropyl amine), butyl amine (butylamine), ethanolamine (ethanolamine), DETA (Diethylenetriamine), TETA (Triethylenetetraine) , Triethanolamine, 2-aminoethyl piperazine, 2-hydroxyethyl piperazine, dibutylamine, and tris (2-aminoethyl) amine (tris (2-aminoethyl) amine) may be one or more mixed solvents selected from.
- the thiol organic solvent may be at least one mixed solvent selected from 1,2-ethanedithiol, 1,2-ethanedithiol, pentanethiol, hexanethiol, and mercaptoethanol. .
- the alkane solvent may be one or more mixed solvents selected from hexane, heptane, and octane.
- the aromatic compound solvent may be one or more mixed solvents selected from toluene, xylene, nitrobenzene, and pyridine.
- the organic halides solvent may be one or more mixed solvents selected from chloroform, methylene chloride, tetrachloromethane, dichloroethane, and chlorobenzene. have.
- the nitrile solvent may be acetonitrile.
- the ketone solvent may be one or more mixed solvents selected from acetone, cyclohexanone, cyclopentanone, and acetylacetone.
- the ether solvent may be one or more mixed solvents selected from ethyl ether, tetrahydrofurane, and 1,4-dioxane.
- the sulfoxides solvent may be one or more mixed solvents selected from dimethyl sulfoxide (DMSO) and sulfolane.
- DMSO dimethyl sulfoxide
- the amide solvent may be at least one mixed solvent selected from dimethyl formamide (DMF) and n-methyl-2-pyrrolidone (NMP).
- DMF dimethyl formamide
- NMP n-methyl-2-pyrrolidone
- the ester solvent may be one or more mixed solvents selected from ethyl lactate, r-butyrolactone, and ethyl acetoacetate.
- Carboxylic acid solvents include propionic acid, hexanoic acid, meso-2,3-dimercaptosuccinic acid and thiolactic acid. And one or more mixed solvents selected from thioglycolic acid.
- solvents may be one example and are not limited thereto.
- it may be prepared by further adding an additive to the ink of step (i).
- the additives are, for example, composed of dispersants, surfactants, polymers, binders, crosslinkers, emulsifiers, defoamers, desiccants, fillers, extenders, thickeners, film conditioners, antioxidants, flow agents, leveling additives, and corrosion inhibitors. It may be any one or more selected from the group, in detail polyvinylpyrrolidone (PVP), polyvinyl alcohol (Polyvinylalcohol), Anti-terra 204 (Anti-terra 204), Anti-terra 205 (Anti-terra 205), Ethyl cellulose, and at least one selected from the group consisting of DispersBYK110 (DispersBYK110).
- PVP polyvinylpyrrolidone
- Polyvinyl alcohol Polyvinylalcohol
- Anti-terra 204 Anti-terra 204
- Anti-terra 205 Anti-terra 205
- Ethyl cellulose and at least one selected from the group consisting of DispersBYK110 (Dispers
- the method of forming the coating layer of the process (ii) may be, for example, wet coating, spray coating, spin coating, doctor blade coating, contact printing, upper feed reverse printing, lower feed reverse ( feed reverse printing, nozzle feed reverse printing, gravure printing, micro gravure printing, reverse micro gravure printing, roller coating, slot die coating, Capillary coating, inkjet printing, jet deposition, spray deposition may be any one selected from the group consisting of.
- a selenization process is a supply of S or Se, which is a Group 16 element, to a thin film and a chalcogen, which is a material composed of a metal and a Group 16 element.
- chalcogen compounds here are good candidates for photovoltaic applications because they have good optical band-gap values in the ground solar spectrum.
- the selenization process of supplying S or Se as described above may be performed by various methods.
- the ink when the ink is prepared by dispersing the nanoparticles including the S element and / or the nanoparticles containing the Se element together with the metal nanoparticles or the metal nanoparticle mixture in the ink composition, the ink is prepared.
- the heat treatment can achieve the same effect as the selenization process.
- the ink may also be prepared by further dispersing S and / or Se itself in the form of particles in a solvent.
- the heat treatment of the above process (iii) can be achieved by the condition that S or Se element is present.
- the conditions in which the S or Se element is present may be provided by supplying gas in the form of H 2 S or H 2 Se, or by heating Se or S into a gas.
- this may be accomplished by laminating S or Se after step (ii) followed by step (iii).
- the lamination may be made by a solution process or may be made by a deposition method.
- FIG. 1 schematically shows a process sequence of a method of manufacturing a thin film according to one specific embodiment of the present invention.
- the present invention also provides a thin film produced by the above method.
- the thin film may have a thickness in the range of 0.5 micrometers to 3.0 micrometers, and more specifically, the thin film may have a thickness of 0.5 micrometers to 2.5 micrometers.
- the thickness of the thin film is less than 0.5 micrometer, the density and amount of the light absorbing layer may not be sufficient, so that the desired photoelectric efficiency may not be obtained. If the thin film is larger than 3.0 micrometer, the distance of the carriers increases. As a result, the probability of recombination increases, resulting in a decrease in efficiency.
- the present invention provides a thin film solar cell manufactured using the thin film.
- FIG. 1 is a diagram showing a process sequence of a manufacturing method according to one specific embodiment of the present invention.
- Example 3 is an electron microscope (SEM) photograph of the Cu 6 Sn 5 bimetallic nanoparticles formed in Example 3;
- Example 3 is an X-ray diffraction (XRD) graph of Cu 6 Sn 5 bimetallic nanoparticles formed in Example 3;
- Example 4 is an electron micrograph (SEM) of the Cu 5 Zn 8 nanoparticles formed in Example 10;
- Example 15 is an electron microscope (SEM) photograph of the Cu—Sn—Zn intermetallic nanoparticles formed in Example 15;
- Example 6 is an XRD graph of Cu—Sn—Zn intermetallic nanoparticles formed in Example 15;
- Example 7 is an electron micrograph (SEM) photograph of the Cu—Sn—Zn intermetallic nanoparticles formed in Example 16;
- Example 8 is an XRD graph of Cu—Sn—Zn intermetallic nanoparticles formed in Example 16;
- Example 9 is a SEM image of the surface of the thin film prepared in Example 17.
- Example 10 is an XRD graph of a thin film prepared in Example 17;
- Example 11 is a cross-sectional SEM photograph of the thin film prepared in Example 18.
- Example 12 is an XRD graph of a thin film prepared in Example 18;
- Example 13 is a IV characteristic graph of the thin film solar cell prepared in Example 21;
- Example 14 is a IV characteristic graph of the thin film solar cell prepared in Example 22;
- Example 15 is a IV characteristic graph of the thin film solar cell prepared in Example 23;
- a mixed aqueous solution containing 12 mmol of CuCl 2 and 10 mmol of SnCl 2 was slowly added dropwise to an aqueous solution containing 60 mmol of NaBH 4 , followed by stirring for 1 hour, and the formed particles were purified by centrifugation to give a bimetallic solution.
- Cu 6 Sn 5 in the form of (bimetallic) nanoparticles was prepared.
- a mixed aqueous solution containing 10 mmol of CuCl 2 and 10 mmol of SnCl 2 was slowly added dropwise to an aqueous solution containing 100 mmol of NaBH 4 , followed by stirring for 10 hours, and the formed particles were purified by centrifugation to give a bimetallic solution.
- Cu 6 Sn 5 was prepared in the form of nanoparticles.
- a mixed aqueous solution containing 10 mmol of CuCl 2 and 10 mmol of SnCl 2 was slowly added dropwise to an aqueous solution containing 150 mmol of NaBH 4 , followed by stirring for 24 hours, and the formed particles were purified by centrifugation and bimetallic.
- Cu 6 Sn 5 was prepared in the form of nanoparticles.
- a mixed aqueous solution containing 12 mmol of CuCl 2 and 10 mmol of SnCl 2 was slowly added dropwise to an aqueous solution containing 150 mmol of NaBH 4 , followed by stirring for 24 hours, and the formed particles were purified by centrifugation to give a bimetallic solution.
- Cu 6 Sn 5 was prepared in the form of nanoparticles.
- Diethylene glycol mixed solution containing 10 mmol of CuCl 2 and 10 mmol SnCl 2 was slowly added dropwise to a diethylene glycol mixed solution containing 150 mmol of NaBH 4 , followed by stirring for 1 hour, and the formed particles were reacted. Purification by centrifugation gave Cu 6 Sn 5 in the form of bimetallic nanoparticles.
- a mixed solution containing 9.5 mmol of CuCl 2 , 5 mmol of SnCl 2, and 14.5 mmol of trisodium citrate was added dropwise for 45 minutes to an aqueous solution containing 87 mmol of NaBH 4 , followed by stirring for 1 hour, followed by reaction. After purification by vacuum filtration, vacuum drying to prepare bimetallic particles having a Cu 6 Sn 5 and Cu-rich Cu-Sn phase.
- a DMSO solution containing 10 mmol of CuCl 2 and 5 mmol of SnCl 2 was slowly added dropwise to a DMSO solution containing 90 mmol of NaBH 4 , followed by stirring for 24 hours to form a Cu 6 Sn 5 and Cu-rich Cu-Sn phase.
- Cu-Sn bimetallic particles were prepared.
- a mixed aqueous solution containing 10 mmol of CuCl 2 and 10 mmol of ZnCl 2 was slowly added dropwise to an aqueous solution containing 120 mmol of NaBH 4 , followed by stirring for 12 hours, and the formed particles were purified by centrifugation and bimetallic.
- Cu 5 Zn 8 in the form of nanoparticles was prepared.
- a mixed aqueous solution containing 18 mmol of CuCl 2 , 10 mmol of SnCl 2 , and 12 mmol of ZnCl 2 was slowly added dropwise to an aqueous solution containing 300 mmol of NaBH 4 , followed by stirring for 24 hours to react, and the formed particles were Purification by centrifugation yielded Cu 6 Sn 5 and Cu 5 Zn 8 in the form of bimetallic nanoparticles.
- Cu (acac) 2 (Cupric acetylacetonate), Zn (OAc) 2 (Zinc acetate), and Sn (acac) 2 Br 2 are dissolved in an oleylamine solution and heated to 225 ° C. At this time, the oleylamine solution in which the S element is dissolved is further added dropwise to the elevated solution, and the prepared particles are purified by centrifugation to prepare CZTS in the form of nanoparticles.
- Cu-Sn particles prepared in Example 3 were mixed with ZnS and CuSe particles and dispersed in a mixed solvent made of an alcoholic solvent to prepare an ink, and then coated on a molybdenum-coated glass substrate. It was. After drying the coating film, a rapid thermal anneal (RTA) at 550 °C to prepare a CZTS-based thin film. 9 and 10 show electron microscope (SEM) photographs and XRD graphs of the obtained thin film.
- RTA rapid thermal anneal
- Cu-Zn-Sn particles prepared in Example 15 were dispersed in a mixed solvent to prepare an ink, and then coated on a molybdenum (Mo) coated glass substrate. After drying the obtained coating film, the CZTS-based thin film was manufactured by RTA (Rapid Thermal Annealing) at 550 ° C. so that the atmosphere of Se was heated together with the glass substrate on which Se was deposited. An electron microscope (SEM) photograph and an XRD graph of the CZTS-based thin film are illustrated in FIGS. 11 and 12.
- Cu-Zn-Sn particles prepared in Example 15 were dispersed in a mixed solvent to prepare an ink, and then coated on a molybdenum (Mo) coated glass substrate. After drying the obtained coating film, and heated with the glass substrate on which S is deposited so that the atmosphere of S can be formed, and heated to 550 °C RTA (Rapid Thermal Annealing) method to prepare a CZTS-based thin film.
- Mo molybdenum
- RTA Rapid Thermal Annealing
- the CZTS particles prepared in Comparative Example 1 were dispersed in a toluene solvent to prepare an ink, and then coated on an Au-coated glass substrate. After drying the obtained coating film, a CZTS-based thin film was prepared without any heat treatment.
- CZTS particles prepared in Comparative Example 2 were dispersed in a toluene solvent to prepare an ink, and then coated on a soda lime glass substrate coated with molybdenum (Mo). The obtained coating film was dried and then heat-treated at 450 ° C. under Se atmosphere to prepare a CZTS-based thin film.
- a CdS layer (Thickness: 50 nm) was raised by using a chemical bath deposition (CBD) method, and then a ZnO layer (by sputtering). Thickness: 100 nm) and Al-doped ZnO layers (Thickness: 500 nm) were sequentially stacked to form a thin film, and an aluminum (Al) electrode was formed on the thin film to manufacture a thin film solar cell.
- I-V current-voltage
- a thin film solar cell was manufactured in the same manner as in Example 21, except that the thin film prepared in Example 18 was used.
- a current-voltage (I-V) characteristic graph obtained from the thin film solar cell is shown in FIG. 14.
- a thin film solar cell was manufactured in the same manner as in Example 21, except that the thin film prepared in Example 20 was used.
- a current-voltage (I-V) characteristic graph obtained from the thin film solar cell is shown in FIG. 15.
- J sc which is a variable for determining the efficiency of the solar cell described in Table 2 is the current density
- V oc is the open circuit voltage measured at zero output current
- photoelectric efficiency is the energy of light incident on the solar panel
- FF Frill factor
- the solar cells of Examples 21, 22, and 23 of the present invention are far superior in photoelectric efficiency than Comparative Examples 5 and 6. That is, since the nanoparticles used in Examples 21, 22, and 23 are more easily grown and are formed of particles in the form of bimetallic alloys, they may exhibit oxidative stability during heat treatment, and thus, better film quality may be realized.
- the photoelectric efficiency is higher than that of the solar cell of the comparative example.
- the solar cells of Examples 21 and 23 provided sufficient content of Group 16 elements inside the film by preparing a thin film using an ink in which S nanoparticles including S together with metal nanoparticles were added together.
- the solar cell has increased the density of the thin film due to volume expansion by adding a group 16 element during the heat treatment of the thin film, thereby further improving the photoelectric efficiency.
- the solar cell of Comparative Example 6 includes a step of heat treatment in the atmosphere with Se as a subsequent step, such as the thin film manufacturing method of the present invention, showing a higher photoelectric efficiency than Comparative Example 5, which omitted the heat treatment process, It can be seen that the photoelectric efficiency is very low compared to the solar cells according to Examples 21, 22, and 23 in which excellent film quality was formed using metallic nanoparticles.
- the manufacturing method of the metal nanoparticles according to the present invention can lower the process cost compared to the conventional vacuum process, and can be a safe process compared to the conventional solution process using the hydrazine, a toxic substance.
- the thin film using the metal nanoparticles according to the present invention there is an advantage that is more stable to oxidation than the case of using the general metal particles, by adding a group 16 element in the selenization process, The volume of the particles increases, which allows the growth of a higher density light absorbing layer, in addition to the group 16 inside the film by mixing together nanoparticles containing S and / or nanoparticles containing Se together with metal nanoparticles. Since the elements can be provided sufficiently, the photoelectric efficiency of the solar cell according to the present invention can be improved as compared with the case of using the existing CZTS nanoparticles.
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Abstract
Description
Claims (34)
- 태양전지의 광흡수층을 형성하는 금속 나노 입자를 제조하는 방법으로서,(i) 환원제를 포함하는 제 1 용액을 준비하는 과정;(ii) 구리(Cu)염, 아연(Zn)염 및 주석(Sn)염으로 이루어진 군에서 선택되는 2종 이상의 염들을 포함하는 제 2 용액을 준비하는 과정;(iii) 상기 제 1 용액에 제 2 용액을 적가하여 혼합물을 제조하는 과정; 및(iv) 상기 혼합물의 반응에 의해 1종 이상의 금속 나노 입자들을 합성한 후 정제하는 과정;을 포함하는 것을 특징으로 하는 금속 나노 입자의 제조방법.
- 제 1 항에 있어서, 상기 환원제는 유기 환원제 및/또는 무기 환원제인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항에 있어서, 상기 환원제는 LiBH4, NaBH4, KBH4, Ca(BH4)2, Mg(BH4)2, LiB(Et)3H2, NaBH3(CN), NaBH(OAc)3, 아스코르브산(ascorbic acid) 및 트리에탄올아민(triethanolamine)으로 이루어진 군에서 선택되는 하나인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항에 있어서, 상기 제 1 용액 및 제 2 용액의 용매는 물, 디에틸렌글리콜(diethylene glycol), 메탄올(methanol), 오레일아민(oleylamine), 에틸렌글리콜(ethyleneglycol), 트리에틸렌글리콜(triethylene glycol), 디메틸설폭사이드(dimethyl sulfoxide), 디메틸포름아마이드(dimethyl formamide) 및 NMP(N-methyl-2-pyrrolidone)로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항에 있어서, 상기 염은 염화물(chloride), 브롬화물(bromide), 요오드화물(iodide), 질산염(nitrate), 아질산염(nitrite), 황산염(sulfate), 아세트산염(acetate), 아황산염(sulfite), 아세틸아세토 네이트염(acetylacetoante) 및 수산화물(hydroxide)로 이루어진 군에서 선택되는 하나 이상의 형태인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항에 있어서, 상기 제 2 용액에는 캡핑제(capping agent)가 더 포함되어 있는 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 6 항에 있어서, 상기 캡핑제는 L-주석산 나트륨(sodium L-tartrate dibasic dehydrate), 타르타르산 나트륨 칼륨(potassium sodium tartrate), 소듐 아크릴산(sodium acrylate), 폴리(아크릴산 소듐염)(Poly(acrylic acid sodium salt)), 시트르산 나트륨(sodium citrate), 시트르산 삼나트륨(trisodium citrate), 시트르산 디나트륨(disodium citrate), 글루콘산 나트륨(sodium gluconate), 아스코르브산 나트륨(sodium ascorbate), 소비톨(sorbitol), 트리에틸포스페이트(triethyl phosphate), 에틸렌디아민(ethylene diamine), 프로필렌디아민(propylene diamine), 에탄디티올(1,2-ethanedithiol), 및 에탄티올(ethanethiol)로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항에 있어서, 상기 혼합물에서 염과 환원제의 혼합비는 몰 비로 1:1 내지 1:20인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 6 항에 있어서, 상기 제 2 용액에서 캡핑제의 함량은 제 1 용액과 제 2 용액의 혼합물에서 금속 염 1몰 대비 0 초과 내지 20 몰 이하인 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항에 있어서, 상기 금속 나노 입자는 바이메탈릭(bimetallic) 또는 인터메탈릭(intermetallic)의 합금 형태로 제조되는 것을 특징으로 하는 금속 나노 입자의 제조 방법.
- 제 1 항 내지 제 10 항 중 어느 하나에 따른 방법에 의해 제조된 것을 특징으로 하는 금속 나노 입자.
- 제 11 항에 있어서, 상기 금속 나노 입자는 Cu-Sn 바이메탈릭 금속 나노 입자, Cu-Zn 바이메탈릭 금속 나노 입자, Sn-Zn 바이메탈릭 금속 나노 입자, 및 Cu-Sn-Zn 인터메탈릭 금속 나노 입자로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 금속 나노 입자.
- 제 12 항에 있어서, 상기 금속 나노 입자는 Cu-Sn 바이메탈릭 금속 나노 입자인 것을 특징으로 하는 금속 나노 입자.
- 구리(Cu), 아연(Zn) 및 주석(Sn)으로 이루어진 군에서 선택되는 2종 이상의 금속을 포함하는 바이메탈릭(bimetallic) 또는 인터메탈릭(intermetallic) 금속 나노 입자가 용매에 분산되어 있는 것을 특징으로 하는 광흡수층 제조용 잉크 조성물.
- 제 14 항에 있어서, 상기 잉크 조성물에는 바이메탈릭 또는 인터메탈릭 금속 나노 입자 외에 S를 포함하는 나노 입자 및/또는 Se를 포함하는 나노 입자가 포함되어 있는 것을 특징으로 하는 광흡수층 제조용 잉크 조성물.
- 제 14 항에 있어서, 상기 바이메탈릭 또는 인터메탈릭 금속 나노 입자는 Cu-Sn 바이메탈릭 금속 나노 입자, Cu-Zn 바이메탈릭 금속 나노 입자, Sn-Zn 바이메탈릭 금속 나노 입자, 및 Cu-Sn-Zn 인터메탈릭 금속 나노 입자로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 광흡수층 제조용 잉크 조성물.
- 제 16 항에 있어서, 상기 바이메탈릭 또는 인터메탈릭 금속 나노 입자는 Cu-Sn 바이메탈릭 금속 나노 입자인 것을 특징으로 하는 광흡수층 제조용 잉크 조성물.
- 제 15 항에 있어서, 상기 S를 포함하는 나노 입자 또는 Se를 포함하는 나노 입자는 ZnS, SnS, SnS2, CuS, CuyS(0.5≤y≤2.0), ZnSe, SnSe, SnSe2, CuSe, 및 CuySe(0.5≤y≤2.0)로 이루어진 군으로부터 선택되는 하나 이상의 화합물인 것을 특징으로 하는 광흡수층 제조용 잉크 조성물.
- 제 15 항에 있어서, 상기 바이메탈릭 또는 인터메탈릭 금속 나노 입자와 S를 포함하는 나노 입자 및/또는 Se를 포함하는 나노 입자의 혼합비는 잉크 조성물 내의 금속의 조성이 0.5≤Cu/(Zn+Sn)≤1.5, 0.5≤Zn/Sn≤2이 되는 범위에서 정해지는 것을 특징으로 하는 광흡수층 제조용 잉크 조성물.
- 제 14 항에 따른 잉크 조성물을 사용하여 광흡수층을 포함하는 박막을 제조하는 방법으로서,(i) Cu, Zn 및 Sn으로 이루어진 군에서 선택되는 2종 이상의 금속을 포함하는, 1종의 금속 나노 입자, 또는 2종 이상의 금속 나노 입자들의 혼합물을 용매에 분산하여 잉크를 제조하는 과정;(ii) 전극이 형성된 기재 상에 상기 잉크를 코팅하는 과정; 및(iii) 상기 전극이 형성된 기재 상에 코팅된 잉크를 건조한 후 열처리 하는 과정;을 포함하는 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 과정(i)에서 금속 나노 입자 또는 금속 나노 입자 혼합물과 함께 S를 포함하는 나노 입자 및/또는 Se를 포함하는 나노 입자를 용매에 분산하여 잉크를 제조하는 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 금속 나노 입자는 Cu-Sn 바이메탈릭 금속 나노 입자, Cu-Zn 바이메탈릭 금속 나노 입자, Sn-Zn 바이메탈릭 금속 나노 입자, 및 Cu-Sn-Zn 인터메탈릭 금속 나노 입자로 이루어진 군에서 선택되는 하나 이상인 것을 특징으로 하는 박막의 제조 방법.
- 제 22 항에 있어서, 상기 금속 나노 입자는 Cu-Sn 바이메탈릭 금속 나노 입자인 것을 특징으로 하는 박막의 제조 방법.
- 제 21 항에 있어서, 상기 S를 포함하는 나노 입자 또는 Se를 포함하는 나노 입자는 ZnS, SnS, SnS2, CuS, CuyS(0.5≤y≤2.0), ZnSe, SnSe, SnSe2, CuSe, 및 CuySe(0.5≤y≤2.0)로 이루어진 군으로부터 선택되는 하나 이상의 화합물인 것을 특징으로 하는 박막의 제조 방법.
- 제 21 항에 있어서, 상기 금속 나노 입자와 S를 포함하는 나노 입자 및/또는 Se를 포함하는 나노 입자의 혼합비는 잉크 내의 금속의 조성이 0.5≤Cu/(Zn+Sn)≤1.5, 0.5≤Zn/Sn≤2이 되는 범위에서 정해지는 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 과정(i)의 용매는 알칸계(alkanes), 알켄계(alkenes), 알킨계(alkynes), 방향족 화합물계(aromatics), 케톤계(ketons), 니트릴계(nitriles), 에테르계(ethers), 에스테르계(esters), 유기할로겐화물계(organic halides), 알코올계(alcohols), 아민계(amines), 티올계(thiols), 카르복실 산계(carboxylic acids), 수소화인계(phosphines), 인산염계(phosphates), 황산화물계(sulfoxides), 및 아미드계(amides) 이루어진 군으로부터 선택된 하나 이상의 유기용매인 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 과정(i)의 잉크는 첨가제를 더 포함하여 제조되는 것을 특징으로 하는 박막의 제조 방법.
- 제 27 항에 있어서, 상기 첨가제는 폴리비닐피로리돈(Polyvinylpyrrolidone: PVP), 폴리비닐알코올(Polyvinylalcohol), 안티테라 204(Anti-terra 204), 안티테라 205(Anti-terra 205), 에틸 셀룰로오스(ethyl cellulose), 및 디스퍼스BYK110(DispersBYK110)으로 이루어진 군에서 선택되는 어느 하나 이상인 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 과정(iii)의 열처리는 S 또는 Se가 존재하는 조건에서 이루어지는 것을 특징으로 하는 박막의 제조 방법.
- 제 29 항에 있어서, 상기 S 또는 Se가 존재하는 조건은 H2S 또는 H2Se의 가스 형태로 공급되거나, Se 또는 S를 가열하여 기체로 공급됨으로써 이루어지는 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 과정(iii)의 열처리는 섭씨 400 내지 900도 범위의 온도에서 수행되는 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항에 있어서, 상기 과정(ii) 이후에 S 또는 Se를 적층하는 과정을 추가로 포함하는 것을 특징으로 하는 박막의 제조 방법.
- 제 20 항 내지 제 32 항 중 어느 하나에 따른 방법으로 제조된 것을 특징으로 하는 박막.
- 제 33 항에 따른 박막을 사용하여 제조되는 박막 태양전지.
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- 2014-01-22 CN CN201480003288.6A patent/CN104822477A/zh active Pending
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Also Published As
Publication number | Publication date |
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TWI584488B (zh) | 2017-05-21 |
TW201448255A (zh) | 2014-12-16 |
JP6408636B2 (ja) | 2018-10-17 |
EP2939766A4 (en) | 2017-01-04 |
EP2939766A1 (en) | 2015-11-04 |
JP2016500758A (ja) | 2016-01-14 |
CN104822477A (zh) | 2015-08-05 |
US9525086B2 (en) | 2016-12-20 |
KR20140097981A (ko) | 2014-08-07 |
US20150325724A1 (en) | 2015-11-12 |
JP2017150087A (ja) | 2017-08-31 |
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