JP5867392B2 - 化合物半導体薄膜作製用インクおよび太陽電池の製造方法 - Google Patents
化合物半導体薄膜作製用インクおよび太陽電池の製造方法 Download PDFInfo
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- JXUKLFVKZQETHF-UHFFFAOYSA-N 1-$l^{1}-selanyl-n,n'-dimethylmethanimidamide Chemical compound CNC([Se])=NC JXUKLFVKZQETHF-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
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- 229910018565 CuAl Inorganic materials 0.000 description 1
- 229910002531 CuTe Inorganic materials 0.000 description 1
- XDTMQSROBMDMFD-UHFFFAOYSA-N Cyclohexane Chemical compound C1CCCCC1 XDTMQSROBMDMFD-UHFFFAOYSA-N 0.000 description 1
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- NBMOASIYCXHBNT-UHFFFAOYSA-N N,N'-diethylcarbamimidoselenoic acid Chemical compound C(C)NC(NCC)=[Se] NBMOASIYCXHBNT-UHFFFAOYSA-N 0.000 description 1
- FULZLIGZKMKICU-UHFFFAOYSA-N N-phenylthiourea Chemical compound NC(=S)NC1=CC=CC=C1 FULZLIGZKMKICU-UHFFFAOYSA-N 0.000 description 1
- MDRAPJDHXPRYQN-UHFFFAOYSA-N NC(=[Se])Nc1ccccc1 Chemical compound NC(=[Se])Nc1ccccc1 MDRAPJDHXPRYQN-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- MNOILHPDHOHILI-UHFFFAOYSA-N Tetramethylthiourea Chemical compound CN(C)C(=S)N(C)C MNOILHPDHOHILI-UHFFFAOYSA-N 0.000 description 1
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- QCUOBSQYDGUHHT-UHFFFAOYSA-L cadmium sulfate Chemical compound [Cd+2].[O-]S([O-])(=O)=O QCUOBSQYDGUHHT-UHFFFAOYSA-L 0.000 description 1
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- ORUIBWPALBXDOA-UHFFFAOYSA-L magnesium fluoride Chemical compound [F-].[F-].[Mg+2] ORUIBWPALBXDOA-UHFFFAOYSA-L 0.000 description 1
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- IYKVLICPFCEZOF-UHFFFAOYSA-N selenourea Chemical compound NC(N)=[Se] IYKVLICPFCEZOF-UHFFFAOYSA-N 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—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
- 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
- H01L31/0272—Selenium or tellurium
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- 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
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02568—Chalcogenide semiconducting materials not being oxides, e.g. ternary compounds
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- 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
- H01L21/02518—Deposited layers
- H01L21/02587—Structure
- H01L21/0259—Microstructure
- H01L21/02601—Nanoparticles
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- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02612—Formation types
- H01L21/02617—Deposition types
- H01L21/02623—Liquid deposition
- H01L21/02628—Liquid deposition using solutions
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—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
- 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
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L31/00—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
- 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
- H01L31/0322—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising only AIBIIICVI chalcopyrite compounds, e.g. Cu In Se2, Cu Ga Se2, Cu In Ga Se2
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- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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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
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- Y02E10/541—CuInSe2 material PV cells
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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
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Description
熱処理は、加熱炉によるアニールのほか、ラピッドサーマルアニール(RTA)によっても行うことができる。
CuIをピリジンに溶解した溶液を、Na2Seをメタノールに溶解した溶液と混合し、不活性ガス雰囲気下において0℃で反応させ、Cu−Seナノ粒子を合成する。反応溶液を濾過し、メタノールで洗浄した後、得られたCu−Seナノ粒子をメタノールに分散させた。
InI3をピリジンに溶解した溶液を、Na2Seをメタノールに溶解した溶液と混合し、不活性ガス雰囲気下において0℃で反応させ、In−Seナノ粒子を合成する。反応溶液を濾過し、メタノールで洗浄した後、得られたIn−Seナノ粒子をメタノールに分散させた。
以上のようにして得たCu−Seナノ粒子分散液とIn−Seナノ粒子分散液を混合し、S原子を含むバインダとしてチオ尿素を加え、Cu/In/Se/Sのモル比を0.9/1/2.4/0.6になるように調製した。この混合物の固形分が5重量%になるように、更にメタノールを加え、インクを調製した。
ソーダライムガラス101の上に、スパッタ法を用いて、厚さが0.6μmのMo層からなる裏面電極102を形成した。
裏面電極102の上に、前述のようにして得た化合物半導体薄膜形成用インクをドクタ法により塗布し、250℃のオーブンで溶剤を蒸発した後、550℃で10分間加熱することにより、膜厚2μmのCISからなる光吸収層103を形成した。
光吸収層103を形成した構造体を、それぞれのモル濃度が0.0015M、0.0075M、および1.5Mの硫酸カドミウム(CdSO4)、チオ尿素(NH2CSNH2)、アンモニア水(NH4OH)を加えた70℃の混合水溶液中に浸漬し、光吸収層103上に膜厚50nmのCdSからなるバッファ層104を形成した。
バッファ層104の上に、ジエチル亜鉛と水を原料として、MOCVD法を用いて、厚さ50nmのZnOからなるi層105を形成した。
i層105の上に、ジエチル亜鉛、水、およびジボランを原料として、MOCVD法を用いて厚さが1μmのZnO:Bからなるn層106を形成した。
n層106上に、蒸着法を用いて、厚さが3μmのAlからなる表面電極107を形成した。
以下に、当初の特許請求の範囲に記載していた発明を付記する。
[1]
S原子又はSe原子を含む化合物を含有するバインダおよび金属化合物粒子を有機溶媒に分散させてなることを特徴とする化合物半導体薄膜形成用インク。
[2]
前記S原子又はSe原子を含む化合物は、下記化学式で表されることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[3]
前記金属化合物粒子の平均粒径は1nm以上200nm以下であることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[4]
前記金属化合物粒子は少なくとも1つのVIB族元素を含むことを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[5]
前記金属化合物粒子は、CuIn x Ga 1−x Se 2 (0≦x≦1)粒子、AgIn x Ga 1−x Se 2 (0≦x≦1)粒子、CuIn x Ga 1−x (Se y S 1−y ) 2 (0≦x≦1、0≦y≦1)粒子、Cu 2 ZnSn(S x Se 1−x ) 4 (0≦x≦1)粒子、及びCuAl(Se x S 1−x ) 2 (0≦x≦1)粒子からなる群から選ばれた1種であることを特徴とする項1記載の化合物半導体薄膜形成用インク。
[6]
前記金属化合物粒子は、Cu 2−x Se 1−y S y (0≦x≦1、0≦y≦1)粒子、(In x Ga 1−x ) 2 (Se 1−y S y ) 3 (0≦x≦1、0≦y≦1)粒子、及びIn x Ga 1−x Se 1−y S y (0≦x≦1、0≦y≦1)粒子からなる群の少なくとも1種であることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[7]
前記金属化合物粒子は、Cu 2−x Se(0≦x≦1)粒子とIn 2 (Se x S 1−x ) 3 (0≦x≦1)粒子の混合物であることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[8]
前記金属化合物粒子は、Cu 2−x Sn 2−y (Se 1−z S z ) 2 (0≦x≦2、0≦y≦2、0≦z≦1)粒子、及びCu 2−x Zn 2−y (Se 1−z S z ) 2 (0≦x≦2、0≦y≦2、0≦z≦1)粒子からなる群から選ばれた少なくとも1種であることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[9]
前記金属化合物粒子は、Cu 2−x Se 1−y S y (0≦x≦1、0≦y≦1)粒子、Zn 2-x Se 1−x S x (0≦x≦1、0≦y≦1))粒子、及びSn 2−x Se 1−y S y (0≦x≦1、0≦y≦1)粒子からなる群から選ばれた少なくとも1種であることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[10]
前記S原子又はSe原子を含む化合物を含有するバインダおよび金属化合物粒子の混合物のS/(S+Se)モル比が0.05〜0.9であることを特徴とする項1に記載の化合物半導体薄膜形成用インク。
[11]
項1〜10のいずれかに記載の化合物半導体薄膜形成用インクを塗布または印刷し、熱処理して形成されたことを特徴とする化合物半導体薄膜。
[12]
項11に記載の化合物半導体薄膜からなる光吸収層を具備することを特徴とする太陽電池。
[13]
基板上に形成された電極上に、項1〜10のいずれかに記載の化合物半導体薄膜形成用インクを塗布または印刷し、化合物半導体塗膜を形成する工程と、
前記化合物半導体塗膜を熱処理して化合物半導体薄膜からなる光吸収層を形成する工程と
を具備することを特徴とする太陽電池の製造方法。
Claims (9)
- S原子を含む化合物を含有するバインダおよび金属化合物粒子を有機溶媒に分散させてなり、
前記金属化合物粒子は、互いに反応することにより化合物半導体を生成する材料からそれぞれがなる複数種の粒子を含み、
前記S原子を含む化合物は、下記化学式で表されることを特徴とする化合物半導体薄膜形成用インク。
- 前記金属化合物粒子の平均粒径は1nm以上200nm以下であることを特徴とする請求項1に記載の化合物半導体薄膜形成用インク。
- 前記金属化合物粒子は少なくとも1つのVIB族元素を含むことを特徴とする請求項1または2に記載の化合物半導体薄膜形成用インク。
- 前記金属化合物粒子は、Cu2−xSe1−ySy(0≦x≦1、0≦y≦1)粒子と、(InxGa1−x)2(Se1−ySy)3(0≦x≦1、0≦y≦1)粒子及びInxGa1−xSe1−ySy(0≦x≦1、0≦y≦1)粒子からなる群から選ばれる少なくとも1種とを含んだことを特徴とする請求項1または2に記載の化合物半導体薄膜形成用インク。
- 前記金属化合物粒子は、Cu2−xSe(0≦x≦1)粒子とIn2(SexS1−x)3(0≦x≦1)粒子の混合物であることを特徴とする請求項1または2に記載の化合物半導体薄膜形成用インク。
- 前記金属化合物粒子は、Cu2−xSn2−y(Se1−zSz)2(0≦x≦2、0≦y≦2、0≦z≦1)粒子、及びCu2−xZn2−y(Se1−zSz)2(0≦x≦2、0≦y≦2、0≦z≦1)粒子を含んだことを特徴とする請求項1または2に記載の化合物半導体薄膜形成用インク。
- 前記金属化合物粒子は、Cu2−xSe1−ySy(0≦x≦1、0≦y≦1)粒子、Zn2−xSe1−xSx(0≦x≦1、0≦y≦1))粒子、及びSn2−xSe1−ySy(0≦x≦1、0≦y≦1)粒子を含んだことを特徴とする請求項1または2に記載の化合物半導体薄膜形成用インク。
- 前記S原子又はSe原子を含む化合物を含有するバインダおよび金属化合物粒子の混合物のS/(S+Se)モル比が0.05〜0.9であることを特徴とする請求項1〜7のいずれかに記載の化合物半導体薄膜形成用インク。
- 基板上に形成された電極上に、請求項1〜8のいずれかに記載の化合物半導体薄膜形成用インクを塗布または印刷し、化合物半導体塗膜を形成する工程と、
前記化合物半導体塗膜を熱処理して化合物半導体薄膜からなる光吸収層を形成する工程と
を具備することを特徴とする太陽電池の製造方法。
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US8999746B2 (en) | 2013-08-08 | 2015-04-07 | Tokyo Ohka Kogyo Co., Ltd. | Method of forming metal chalcogenide dispersion, metal chalcogenide dispersion, method of producing light absorbing layer of solar cell, method of producing solar cell |
US20160233358A1 (en) * | 2013-09-16 | 2016-08-11 | Wake Forest University | Polycrystalline films comprising copper-zinc-tin-chalcogenide and methods of making the same |
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