JP2005101427A - 光起電力素子およびその製造方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title abstract description 14
- 239000004065 semiconductor Substances 0.000 claims description 65
- 239000012535 impurity Substances 0.000 claims description 18
- 229910021417 amorphous silicon Inorganic materials 0.000 abstract description 107
- 239000000758 substrate Substances 0.000 abstract description 47
- 229910021421 monocrystalline silicon Inorganic materials 0.000 abstract description 45
- 230000003667 anti-reflective effect Effects 0.000 abstract 1
- 239000010408 film Substances 0.000 description 157
- 239000007789 gas Substances 0.000 description 28
- 230000000052 comparative effect Effects 0.000 description 19
- 238000000034 method Methods 0.000 description 17
- 229910052751 metal Inorganic materials 0.000 description 11
- 239000002184 metal Substances 0.000 description 11
- 238000010248 power generation Methods 0.000 description 11
- 239000000969 carrier Substances 0.000 description 9
- 238000005268 plasma chemical vapour deposition Methods 0.000 description 9
- 238000002161 passivation Methods 0.000 description 8
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 description 6
- 229910004298 SiO 2 Inorganic materials 0.000 description 6
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 6
- 238000005215 recombination Methods 0.000 description 5
- 230000006798 recombination Effects 0.000 description 5
- 238000004544 sputter deposition Methods 0.000 description 5
- XYFCBTPGUUZFHI-UHFFFAOYSA-N Phosphine Chemical compound P XYFCBTPGUUZFHI-UHFFFAOYSA-N 0.000 description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 4
- 238000009792 diffusion process Methods 0.000 description 4
- 239000011777 magnesium Substances 0.000 description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000007650 screen-printing Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910000577 Silicon-germanium Inorganic materials 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 229910052796 boron Inorganic materials 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 230000031700 light absorption Effects 0.000 description 2
- 229910052749 magnesium Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 229910052750 molybdenum Inorganic materials 0.000 description 2
- 239000011733 molybdenum Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910000073 phosphorus hydride Inorganic materials 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 239000010409 thin film Substances 0.000 description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 2
- 229910052721 tungsten Inorganic materials 0.000 description 2
- 239000010937 tungsten Substances 0.000 description 2
- 239000011787 zinc oxide Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910006404 SnO 2 Inorganic materials 0.000 description 1
- 229910010413 TiO 2 Inorganic materials 0.000 description 1
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 1
- LEVVHYCKPQWKOP-UHFFFAOYSA-N [Si].[Ge] Chemical compound [Si].[Ge] LEVVHYCKPQWKOP-UHFFFAOYSA-N 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 229910021419 crystalline silicon Inorganic materials 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000010419 fine particle Substances 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 1
- 229910021480 group 4 element Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 238000010884 ion-beam technique Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 229910021424 microcrystalline silicon Inorganic materials 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 229910021426 porous silicon Inorganic materials 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000002310 reflectometry Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Chemical compound [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 229910052814 silicon oxide Inorganic materials 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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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
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- H01L31/0747—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 heterojunction type comprising a AIVBIV heterojunction, e.g. Si/Ge, SiGe/Si or Si/SiC solar cells comprising a heterojunction of crystalline and amorphous materials, e.g. heterojunction with intrinsic thin layer
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Abstract
【解決手段】 n型単結晶シリコン基板1の主面上に反射防止膜3が形成されている。n型単結晶シリコン基板1の裏面には、i型非晶質シリコン膜3が形成されており、i型非晶質シリコン膜3上に正極100および負極200が形成されている。正極100は、i型非晶質シリコン膜3上に順に形成されたp型非晶質シリコン膜5、裏面電極7および集電極9を含む。負極200は、i型非晶質シリコン膜3上に順に形成されたn型非晶質シリコン膜4、裏面電極6および集電極8を含む。裏面電極7はp型非晶質シリコン膜5の全面に形成されている。
【選択図】 図2
Description
以下、本発明の一実施の形態について説明する。
以下、本発明の第2の実施の形態に係る光起電力素子500aについて説明する。
以下、本発明の第3の実施の形態に係る光起電力素子500bについて説明する。
以下の実施例1では、上記実施の形態の方法で図3の構造を有する光起電力素子を作製し、出力特性を測定した。
実施例2では、実施例1と同じ方法により図3の構造を有する光起電力素子を作製した。実施例2の光起電力素子が実施例1の光起電力素子と異なる点は、裏面電極7の幅が2.2mmである点である。
比較例1〜3では、実施例1と同じ方法により図3の構造を有する光起電力素子を作製した。比較例1の光起電力素子が実施例1の光起電力素子と異なる点は、裏面電極7の幅が1.4mmである点である。比較例2の光起電力素子が実施例1の光起電力素子と異なる点は、裏面電極7の幅が1.6mmである点である。比較例1の光起電力素子が実施例3の光起電力素子と異なる点は、裏面電極7の幅が1.8mmである点である。
実施例1,2および比較例1〜3の光起電力素子の出力特性を測定した。図5に実施例1,2および比較例1〜3の光起電力素子の出力特性の測定結果を示す。
以下の実施例3では、上記実施の形態の方法で図4の構造を有する光起電力素子を作製し、出力特性を測定した。
図6は、比較例4の光起電力素子の構造を示す模式的断面図である。
実施例1,3および比較例4の光起電力素子の出力特性を測定した。表3に実施例1,3および比較例4の光起電力素子の出力特性の測定結果を示す。
2 パッシベーション膜
3,3a,3b i型非晶質シリコン膜
3c Bドープ層
4 n型非晶質シリコン膜
5 p型非晶質シリコン膜
6,7 裏面電極
8,9 集電極
100 正極
200 負極
300,400 電極
500 光起電力素子
Claims (7)
- 一導電型を示す不純物を含み、一面および他面を有する結晶系半導体を備え、
前記結晶系半導体の前記一面の第1の領域に、真性の第1の非晶質系半導体膜と、一導電型を示す不純物を含む第2の非晶質系半導体膜と、第1の電極とを順に備え、
前記結晶系半導体の前記一面の第2の領域に、真性の第3の非晶質系半導体膜と、前記一導電型と異なる他導電型を示す不純物を含む第4の非晶質系半導体膜と、第2の電極とを順に備え、
前記第2の電極は、前記第4の非晶質系半導体膜上の全面を覆うように形成されたことを特徴とする光起電力素子。 - 前記第1の電極の幅は、前記第1の非晶質系半導体膜の幅よりも小さくされていることを特徴とする請求項1記載の光起電力素子。
- 前記第2の電極は、前記第4の非晶質系半導体膜上の全面および前記第1の非晶質系半導体膜の一部を覆うように形成されたことを特徴とする請求項1または2記載の光起電力素子。
- 前記第1の非晶質系半導体膜と前記第3の非晶質系半導体膜とは連続する共通の非晶質系半導体膜であることを特徴とする請求項1〜3のいずれかに記載の光起電力素子。
- 前記一導電型はn型であり、
前記他導電型はp型であり、
前記第2の領域は、前記第1の領域よりも大きいことを特徴とする請求項1〜4のいずれかに記載の光起電力素子。 - 前記他面の実質的に全面が光入射面であることを特徴とする請求項1〜5のいずれかに記載の光起電力素子。
- 前記結晶系半導体の前記第2の領域と前記第3の非晶質系半導体膜との界面近傍に前記他導電型の不純物がドープされたことを特徴とする請求項1〜6のいずれかに記載の光起電力素子。
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Cited By (21)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008537345A (ja) * | 2005-04-20 | 2008-09-11 | ヘルムホルツ−ツェントルム ベルリン フュア マテリアリーエン ウント エネルギー ゲゼルシャフト ミット ベシュレンクテル ハフツング | ヘテロ接合太陽電池 |
JP2009535845A (ja) * | 2006-05-04 | 2009-10-01 | サンパワー コーポレイション | ドーピングされた半導体ヘテロ接合電極を有する太陽電池 |
WO2010001848A1 (ja) * | 2008-06-30 | 2010-01-07 | 三洋電機株式会社 | 太陽電池及びその製造方法 |
JP2010503222A (ja) * | 2006-09-05 | 2010-01-28 | キュー−セルズ エスエー | 局所的なヘテロコンタクトを生成するための方法およびその装置 |
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