JP6719382B2 - 光電変換素子、それを備えた太陽電池モジュールおよび太陽光発電システム - Google Patents
光電変換素子、それを備えた太陽電池モジュールおよび太陽光発電システム Download PDFInfo
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- JP6719382B2 JP6719382B2 JP2016556544A JP2016556544A JP6719382B2 JP 6719382 B2 JP6719382 B2 JP 6719382B2 JP 2016556544 A JP2016556544 A JP 2016556544A JP 2016556544 A JP2016556544 A JP 2016556544A JP 6719382 B2 JP6719382 B2 JP 6719382B2
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- semiconductor layer
- type amorphous
- amorphous semiconductor
- film
- photoelectric conversion
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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
- H01L31/04—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
- H01L31/072—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
- H01L31/0745—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
- 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
-
- 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
- H01L31/02—Details
- H01L31/0216—Coatings
- H01L31/02161—Coatings for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/02167—Coatings for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
-
- 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
- H01L31/02—Details
- H01L31/0224—Electrodes
- H01L31/022408—Electrodes for devices characterised by at least one potential jump barrier or surface barrier
- H01L31/022425—Electrodes for devices characterised by at least one potential jump barrier or surface barrier for solar cells
- H01L31/022441—Electrode arrangements specially adapted for back-contact solar cells
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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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
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Description
図1は、この発明の実施の形態1による光電変換素子の構成を示す断面図である。図1を参照して、この発明の実施の形態1による光電変換素子10は、半導体基板1と、反射防止膜2と、パッシベーション膜3と、n型非晶質半導体層4と、p型非晶質半導体層5と、電極6,7と、保護膜8とを備える。
光電変化素子10において、ギャップ領域Gの幅、隣接する開口部8A間のピッチXおよび開口部8Aの開口幅Lを変えたときの光電変換素子10を備える太陽電池モジュールの歩留まりについて評価した。
図13は、防湿耐性試験の結果を示す図である。図13を参照して、iは、真性非晶質シリコンを表し、i/nは、真性非晶質シリコンおよびn型非晶質シリコンの積層膜を表し、i/SiNは、真性非晶質シリコンおよびシリコンナイトライドの積層膜を表す。
ことにより、電気的な絶縁性と、防湿性とを実現できるため、好ましい。
上述したように、光電変換素子10をモジュール化する際に、導電性接着剤または絶縁性接着剤を用いて光電変換素子10と配線シート70とを接合する工程があり、180℃、20分程度の加熱プロセスが存在する。
図14は、実施の形態2による光電変換素子の構成を示す概略図である。図14を参照して、実施の形態2による光電変換素子100は、図1に示す光電変換素子10のn型非晶質半導体層4、p型非晶質半導体層5、電極6,7および保護膜8をn型非晶質半導体層101、p型非晶質半導体層102、絶縁膜103、電極104,105および保護膜106に代えたものであり、その他は、光電変換素子10と同じである。
図21は、実施の形態3による光電変換素子の構成を示す断面図である。図21を参照して、実施の形態3による光電変換素子200は、図1に示す光電変換素子10の反射防止膜2を反射防止膜201に代え、パッシベーション膜3をパッシベーション膜202に代えたものであり、その他は、光電変換素子10と同じである。
図22は、実施の形態4による光電変換素子の構成を示す断面図である。図22を参照して、実施の形態4による光電変換素子300は、図21に示す光電変換素子200のパッシベーション膜202、n型非晶質半導体層4、p型非晶質半導体層5、電極6,7および保護膜8をパッシベーション膜301,302、n型非晶質半導体層303、p型非晶質半導体層304、電極305,306および保護膜307に代えたものであり、その他は、光電変換素子200と同じである。
図28は、実施の形態5による光電変換素子の構成を示す断面図である。図28を参照して、実施の形態5による光電変換素子400は、図1に示す光電変換素子10の半導体基板1を半導体基板401に代えたものであり、その他は、光電変換素子10と同じである。
図31は、この実施の形態による光電変換素子を備える光電変換モジュールの構成を示す概略図である。図31を参照して、光電変換モジュール1000は、複数の光電変換素子1001と、カバー1002と、出力端子1003,1004とを備える。
任意の整数である。
図32は、この実施の形態による光電変換素子を備える太陽光発電システムの構成を示す概略図である。
図35は、この実施の形態による光電変換素子を備える太陽光発電システムの構成を示す概略図である。
Claims (10)
- 半導体基板と、
前記半導体基板の一方の面に形成され、第1の導電型を有する第1の非晶質半導体層と、
前記半導体基板の一方の面に形成されるとともに前記半導体基板の面内方向において前記第1の非晶質半導体層に隣接して形成され、前記第1の導電型と反対の第2の導電型を有する第2の非晶質半導体層と、
前記第1の非晶質半導体層上に形成された第1の電極と、
前記第1の電極との間でギャップ領域を隔てて前記第2の非晶質半導体層上に形成された第2の電極と、
前記第1の電極の前記半導体基板と反対側の表面、前記第2の電極の前記半導体基板と反対側の表面、および前記ギャップ領域内の前記第1の非晶質半導体層の前記半導体基板と反対側の表面に接して形成され、絶縁膜を含む保護膜とを備え、
前記ギャップ領域は、前記半導体基板の面内方向において、前記第1の電極に隣接する前記第2の電極の前記第1の電極側の端と前記第1の電極の前記第2の電極側の端との間の領域である、光電変換素子。 - 前記保護膜は、前記第1および第2の電極上に開口部を有する、請求項1に記載の光電変換素子。
- 前記開口部の幅は、20μm以上、かつ、前記電極の幅よりも小さい、請求項2に記載の光電変換素子。
- 前記第1の電極の幅は、前記第2の電極の幅と異なり、
幅が狭い方の前記電極上における前記開口部の幅は、幅が広い方の前記電極上における前記開口部の幅よりも広い、請求項2または請求項3に記載の光電変換素子。 - 前記保護膜は、前記第1の電極、前記第2の電極および前記ギャップ領域上に連続して形成されている、請求項1から請求項4のいずれか1項に記載の光電変換素子。
- 前記保護膜は、更に、前記半導体基板の周辺領域上に形成されている、請求項1から請求項5のいずれか1項に記載の光電変換素子。
- 前記保護膜は、無機絶縁膜と非晶質半導体層とを含む、請求項1から請求項6のいずれか1項に記載の光電変換素子。
- 前記第1の電極は、前記第1の非晶質半導体層の幅方向において、前記第1の非晶質半導体層のフラット領域と前記フラット領域の両側に配置された膜厚減少領域との上に配置され、
前記第2の電極は、前記第2の非晶質半導体層の幅方向において、前記第2の非晶質半導体層のフラット領域と前記フラット領域の両側に配置された膜厚減少領域との上に配置される、請求項1から請求項7のいずれか1項に記載の光電変換素子。 - 請求項1から請求項8のいずれか1項に記載の光電変換素子を含む光電変換モジュール。
- 請求項1から請求項8のいずれか1項に記載の光電変換素子を含む光発電システム。
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