JP4589400B2 - 光起電力活性半導体材料を有する光起電力セル - Google Patents
光起電力活性半導体材料を有する光起電力セル Download PDFInfo
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- JP4589400B2 JP4589400B2 JP2007538327A JP2007538327A JP4589400B2 JP 4589400 B2 JP4589400 B2 JP 4589400B2 JP 2007538327 A JP2007538327 A JP 2007538327A JP 2007538327 A JP2007538327 A JP 2007538327A JP 4589400 B2 JP4589400 B2 JP 4589400B2
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 60
- 239000000463 material Substances 0.000 title claims abstract description 58
- -1 tellurium ions Chemical class 0.000 claims abstract description 51
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 43
- 229910052736 halogen Inorganic materials 0.000 claims abstract description 34
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 29
- 229910007709 ZnTe Inorganic materials 0.000 claims abstract description 23
- 229910052714 tellurium Inorganic materials 0.000 claims abstract description 18
- 150000001875 compounds Chemical class 0.000 claims abstract description 17
- 239000000203 mixture Substances 0.000 claims abstract description 14
- CPELXLSAUQHCOX-UHFFFAOYSA-M Bromide Chemical compound [Br-] CPELXLSAUQHCOX-UHFFFAOYSA-M 0.000 claims abstract description 6
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 claims abstract description 5
- 239000010410 layer Substances 0.000 claims description 60
- 239000000758 substrate Substances 0.000 claims description 26
- 238000000151 deposition Methods 0.000 claims description 18
- 150000002367 halogens Chemical class 0.000 claims description 13
- 229910052782 aluminium Inorganic materials 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 12
- 238000004070 electrodeposition Methods 0.000 claims description 10
- 238000004544 sputter deposition Methods 0.000 claims description 10
- 239000011248 coating agent Substances 0.000 claims description 9
- 238000000576 coating method Methods 0.000 claims description 9
- 229910052698 phosphorus Inorganic materials 0.000 claims description 8
- 230000008021 deposition Effects 0.000 claims description 7
- 229910052725 zinc Inorganic materials 0.000 claims description 7
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 239000002184 metal Substances 0.000 claims description 6
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims description 5
- 150000002500 ions Chemical group 0.000 claims description 5
- 239000011574 phosphorus Substances 0.000 claims description 5
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 4
- 229910052785 arsenic Inorganic materials 0.000 claims description 4
- 229910052733 gallium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 239000011241 protective layer Substances 0.000 claims description 4
- 239000007864 aqueous solution Substances 0.000 claims description 3
- 239000000470 constituent Substances 0.000 claims description 3
- 239000011888 foil Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 238000005477 sputtering target Methods 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052786 argon Inorganic materials 0.000 claims description 2
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 2
- 238000004132 cross linking Methods 0.000 claims description 2
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 2
- 230000008018 melting Effects 0.000 claims description 2
- 238000002844 melting Methods 0.000 claims description 2
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 2
- 239000003638 chemical reducing agent Substances 0.000 claims 1
- 239000011701 zinc Substances 0.000 description 34
- 239000011572 manganese Substances 0.000 description 33
- 238000005868 electrolysis reaction Methods 0.000 description 7
- 239000012153 distilled water Substances 0.000 description 6
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 125000004429 atom Chemical group 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 229910045601 alloy Inorganic materials 0.000 description 4
- 239000000956 alloy Substances 0.000 description 4
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 229910052710 silicon Inorganic materials 0.000 description 4
- 239000010703 silicon Substances 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
- 239000000243 solution Substances 0.000 description 4
- 238000006467 substitution reaction Methods 0.000 description 4
- 239000002800 charge carrier Substances 0.000 description 3
- 229910052748 manganese Inorganic materials 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 3
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- 239000010409 thin film Substances 0.000 description 3
- SKJCKYVIQGBWTN-UHFFFAOYSA-N (4-hydroxyphenyl) methanesulfonate Chemical compound CS(=O)(=O)OC1=CC=C(O)C=C1 SKJCKYVIQGBWTN-UHFFFAOYSA-N 0.000 description 2
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical group [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000011149 active material Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000460 chlorine Substances 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000008151 electrolyte solution Substances 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 description 1
- FGUUSXIOTUKUDN-IBGZPJMESA-N C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 Chemical compound C1(=CC=CC=C1)N1C2=C(NC([C@H](C1)NC=1OC(=NN=1)C1=CC=CC=C1)=O)C=CC=C2 FGUUSXIOTUKUDN-IBGZPJMESA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 229910017231 MnTe Inorganic materials 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 239000004411 aluminium Substances 0.000 description 1
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229940006460 bromide ion Drugs 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 210000001072 colon Anatomy 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- JAONJTDQXUSBGG-UHFFFAOYSA-N dialuminum;dizinc;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Al+3].[Zn+2].[Zn+2] JAONJTDQXUSBGG-UHFFFAOYSA-N 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 239000010439 graphite Substances 0.000 description 1
- 229910002804 graphite Inorganic materials 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- BHEPBYXIRTUNPN-UHFFFAOYSA-N hydridophosphorus(.) (triplet) Chemical compound [PH] BHEPBYXIRTUNPN-UHFFFAOYSA-N 0.000 description 1
- 238000002513 implantation Methods 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000001055 reflectance spectroscopy Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000003746 solid phase reaction Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- XSOKHXFFCGXDJZ-UHFFFAOYSA-N telluride(2-) Chemical compound [Te-2] XSOKHXFFCGXDJZ-UHFFFAOYSA-N 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000010626 work up procedure Methods 0.000 description 1
Classifications
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- 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
- H01L31/04—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 adapted as photovoltaic [PV] conversion devices
- H01L31/06—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers
- H01L31/068—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 adapted as photovoltaic [PV] conversion devices characterised by potential barriers the potential barriers being only of the PN homojunction type, e.g. bulk silicon PN homojunction solar cells or thin film polycrystalline silicon PN homojunction solar cells
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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
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B23/00—Single-crystal growth by condensing evaporated or sublimed materials
- C30B23/02—Epitaxial-layer growth
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/46—Sulfur-, selenium- or tellurium-containing compounds
- C30B29/48—AIIBVI compounds wherein A is Zn, Cd or Hg, and B is S, Se or Te
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- H01L21/02551—Group 12/16 materials
- H01L21/02562—Tellurides
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- H01L21/02573—Conductivity type
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- 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
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- H01L31/0264—Inorganic materials
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- H01L31/02963—Inorganic materials including, apart from doping material or other impurities, only AIIBVI compounds, e.g. CdS, ZnS, HgCdTe characterised by the doping material
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- 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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- Crystallography & Structural Chemistry (AREA)
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- Photovoltaic Devices (AREA)
Description
ZnTe (I)
Zn1-xMnxTe (II)
[式中、xは0.01〜0.99の数である]を有するpドープ又はnドープ半導体材料であり、その際、この光起電力活性半導体材料中でテルルイオンが所定の割合までハロゲンイオン及び窒素イオンで置換されており、かつこのハロゲンイオンは、フッ化物、塩化物及び臭化物又はこれらの混合物からなる群から選択されることを特徴とする光起電力セルにより解決される。
ZnTe1-2yHalyNy (III)
Zn1-xMnxTe1-2yHalyNy (IV)
[式中、xは0.01〜0.99であり、yは0.01〜0.2であり、かつzは0.0001〜0.01である]で示される組成物を有し、
かつリン、ヒ素又はこれらの混合物でドープされており、かつ、p層中に含まれるpドープ半導体材料は、(V)又は(VI):
ZnTe1-2yHalyNy (V)
Zn1-xMnxTe1-2yHalyNy (VI)
[式中、xは0.01〜0.99、yは0.01〜0.2であり、かつzは0.0001〜0.01である]で示される組成物を有し、
かつアルミニウム、インジウム、ガリウム又はこれらの混合物でドープされている。
a)導電性基板を、ZnTe又はZn1-xMnxTeからの第1の層で被覆する段階、
b)この第1の層をハロゲンイオン及び窒素イオンでドープする段階、
c)ドナー原子又はアクセプター原子でドープすることにより、pドーピング又はnドーピングを生じさせる段階、
d)第1の層を、ZnTe又はZn1-xMnxTeからの第2の層で被覆する段階、
e)この第2の層をハロゲンイオン又は窒素イオンでドープする段階、
f)アクセプター原子又はドナー原子でドープすることにより、nドーピング又はpドーピングを生じさせる段階、及び
g)この第2の層上に導電性透明層及び保護層を施与する段階
を含む。
10mmの直径及び200mmの長さを有する石英管中に、5.16gのZn、1.01gのMn並びに12.76gのTeを、これら全ての元素を99.995%より高い純度で添加した。石英管を排気し、そして真空下で溶融させた。次いで、管炉内で縦軸で傾斜させつつ(約90秒の周期)20時間以内で1250℃にして、この温度で5時間保持し、次いでこの炉を冷ました。組成物Zn0.8Mn0.2Teの溶融体が得られ、これは光学反射分光においてバンドギャップ2.28eVを有していた。
電気化学堆積のために、二重壁、内部温度計及び底部出口弁を有する500mlの平面研磨ガラス反応容器中で電気分解を実施した。正極としては、ステンレス鋼板(100×70×0.5)を使用した。負極は、MKUSF04(グラファイト)からなっていた。
21.35gのZnSO4・7H2O及び55.4mgのNa2TeO3を蒸留水中に溶解させた。この溶液を、H2SO4(2mol/l)でpH2に調節し、そして蒸留水で500mlに補充した(Zn=0.15mol/l;Te=0.5mmol/l;Zn/Te=300/1)。次いで、電解質溶液をこの電気分解セル中に充填し、そして80℃に加熱した。この電気分解を、30分の時間にわたって、100.0mAの電流で撹拌せずに実施した。この堆積を、〜50cm2(2mA/cm2)の正極表面で実施した。電気分解完了後に、この正極を取り出し、蒸留水で洗浄し、そして乾燥させた。銅色の被膜が堆積した(18.6mg)。
21.55gのZnSO4・7H2O(0.15mol/l)、47.68gのMnSO4・H2O(0.6mol/l)、33gの(NH4)2SO4(0.5mol/l)、1gの酒石酸及び55.4mgのNa2TeO3(0.5mmol/l)を蒸留水中に溶解させた。この溶液を、H2SO4(2mol/l)でpH2に調節し、そして蒸留水で500mlに補充した(Zn/Mn/Te=300/1200/1)。次いで、電解質溶液をこの電気分解セル中に充填し、そして80℃に加熱した。この電気分解を、60分の時間にわたって、101.3mAの電流で撹拌せずに実施した。
Claims (12)
- 光起電力活性半導体材料を有する光起電力セルであって、光起電力活性半導体材料が、式(I)の二元化合物又は式(II)の三元化合物:
ZnTe (I)
Zn1-xMnxTe (II)
[式中、xは0.01〜0.99の数である]を有するpドープ又はnドープ半導体材料であり、その際、この光起電力活性半導体材料中で、テルルイオンが所定の割合までハロゲンイオン及び窒素イオンで置換されており、かつこのハロゲンイオンは、フッ化物、塩化物及び臭化物又はこれらの混合物からなる群から選択されることを特徴とする光起電力セル。 - 光起電力活性半導体材料中で、窒素及びハロゲンがそれぞれ0.1〜20原子%の原子濃度割合で含まれることを特徴とする、請求項1に記載の光起電力セル。
- pドープ半導体材料が、As及びPの群からの少なくとも1種の元素を0.5原子%までの原子濃度割合で含有し、かつnドープ半導体材料が、Al、In及びGaの群からの少なくとも1種の元素を0.5原子%までの原子濃度割合で含有することを特徴とする、請求項1又は2に記載の光起電力セル。
- 導電性基板と、0.1〜10μmの厚さを有するpドープ半導体材料からのp層と、0.1〜10μmの厚さを有するnドープ半導体材料からのn層とを有する、請求項1から3までの何れか1項に記載の光起電力セル。
- 基板がフレキシブルな金属箔又はフレキシブルな金属板であることを特徴とする、請求項4に記載の光起電力セル。
- n層中に含まれるnドープ半導体材料が、(III)又は(IV):
ZnTe1-2yHalyNy (III)
Zn1-xMnxTe1-2yHalyNy (IV)
[式中、xは0.01〜0.99であり、yは0.01〜0.2であり、かつzは0.0001〜0.01である]で示される組成物を有し、
かつリン、ヒ素又はこれらの混合物でドープされており、かつ、p層中に含まれるpドープ半導体材料が(V)又は(VI):
ZnTe1-2yHalyNy (V)
Zn1-xMnxTe1-2yHalyNy (VI)
[式中、xは0.01〜0.99であり、yは0.01〜0.2であり、かつzは0.0001〜0.01である]で示される組成物を有し、
かつアルミニウム、インジウム、ガリウム又はこれらの混合物でドープされていることを特徴とする、請求項4又は5に記載の光起電力セル。 - 請求項1から6までの何れか1項に記載の光起電力セルの製造方法において、導電性基板を、式(I)又は(II)で示される化合物を有するpドープ又はnドープ半導体材料からの層の少なくとも2種で被覆し、その際、それぞれの層が0.1〜10μmの厚さを有することを特徴とする方法。
- 被覆が、スパッタリング、電気化学堆積又は無電解堆積の群からの少なくとも1種の堆積法を含むことを特徴とする、請求項7に記載の方法。
- スパッタリングのために、
i)Zn1-xMnxTe:Al及びZn1-xMnxTe:Pからのスパッタリングターゲットを、構成成分を一緒に溶融させることにより製造するか、又は、
ii)半導体材料の個々の構成成分を基板上に順次スパッタリングし、次いで400〜900℃の温度に加熱することを特徴とする、請求項8に記載の方法。 - 無電解堆積のために、Zn2+−、Mn2+−及びTeO3 2-イオンを含有する水溶液を30〜90℃の温度で、還元剤としての次亜リン酸H3PO2を用いて基板の存在下で架橋させることを特徴とする、請求項8に記載の方法。
- 以下の工程段階:
a)導電性基板を、Zn1-xMnxTe又はZnTeからの第1の層で被覆する段階、
b)この第1の層をハロゲンイオン及び窒素イオンでドープする段階、
c)ドナー原子又はアクセプター原子でドープすることにより、pドーピング又はnドーピングを生じさせる段階、
d)第1の層を、Zn1-xMnxTe又はZnTeからの第2の層で被覆する段階、
e)この第2の層をハロゲンイオン又は窒素イオンでドープする段階、
f)アクセプター原子又はドナー原子でドープすることにより、nドーピング又はpドーピングを生じさせる段階、及び
g)この第2の層上に導電性透明層及び保護層を施与する段階
を特徴とする、請求項8から10までの何れか1項に記載の方法。 - 段階b)及びe)においてハロゲンイオン及び窒素イオンでドープするために、層の処理を、窒素又はアルゴン下で、ハロゲン化アンモニウムを用いて500〜1200℃の温度で実施することを特徴とする、請求項11に記載の方法。
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