JP2008053731A - 薄膜シリコン太陽電池中のナノワイヤ - Google Patents
薄膜シリコン太陽電池中のナノワイヤ Download PDFInfo
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- 239000010703 silicon Substances 0.000 title claims abstract description 39
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- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
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- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
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- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
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- 229910052715 tantalum Inorganic materials 0.000 description 1
- WXRGABKACDFXMG-UHFFFAOYSA-N trimethylborane Chemical compound CB(C)C WXRGABKACDFXMG-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 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
- H01L31/0248—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
- H01L31/0352—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 their shape or by the shapes, relative sizes or disposition of the semiconductor regions
- H01L31/035236—Superlattices; Multiple quantum well structures
- H01L31/035254—Superlattices; Multiple quantum well structures including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table, e.g. Si-SiGe superlattices
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- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y20/00—Nanooptics, e.g. quantum optics or photonic crystals
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Abstract
【解決手段】本光起電(PV)装置100は、以下のa)〜e)を備える。a)基板上に実質的に垂直な配向で設けられた複数のSiナノワイヤであって、第一タイプのドーピングを有するSiナノワイヤb)複数のSiナノワイヤ上に設けられた光を効果的に吸収する第一のコンフォーマルSi層c)第一のコンフォーマルSi層上にコンフォーマルに設けられた第二のコンフォーマルSi層であって、第二タイプのドーピングを有する第二のコンフォーマルSi層d)第二のコンフォーマルSi層上に設けられた導電性材料層、及びe)装置を外部回路に接続するための上部接点及び下部接点であって、複数のナノワイヤと電気的に接触している下部接点及び第二のコンフォーマルSi層と電気的に接触している上部接点
【選択図】図1
Description
添付の図面を参照しながら以下の説明を考察することで、本発明及びその利点を一層完全に理解できよう。
本実施例は、本発明のある実施形態に従って(湿式エッチング法で形成された)結晶質Siナノワイヤ上に非晶質Siのコンフォーマル層を形成することを例示するために役立つ。
本実施例は、本発明のある実施形態に従ってCVD成長結晶質Siナノワイヤ上に非晶質Siのコンフォーマル層を形成することを例示するために役立つ。
本実施例は、本発明のある実施形態に係る、光起電力装置100を含んでなる典型的なシステムを例示するために役立つ。
この実施例は、本発明の実施形態に係るナノワイヤ太陽電池が光反射率を低下させ、それにより(通常の平面型太陽電池に比べて)太陽電池の効率を高め得ることを例示するために役立つ。
本実施例は、本発明のある実施形態に従って光起電力装置100/200を使用し得る典型的な用途を例示するために役立つ。
隣接するナノワイヤ間の空隙がコンフォーマル層材料で実質的に満たされている場合を示す図1及び2に関してコンフォーマル皮膜を説明してきたが、かかるコンフォーマル皮膜は図14に示すものにも類似し得る。この場合、部分的に構成された装置1400は、基板102上にナノワイヤ101を含むと共に、ナノワイヤ上に設けられた第一のコンフォーマル層(皮膜)1403及び第二のコンフォーマル層1404を含んでいる。
要約すれば、本発明は能動PV要素としてシリコン(Si)ナノワイヤを含む光起電(PV)装置に関し、かかる装置は通例は薄膜Si太陽電池である。一般に、かかる太陽電池はpin型のものである。さらに、本発明はかかる装置の製造方法及び使用方法、並びにかかる装置を使用するシステムにも関する。非晶質Si母材中に結晶質Siナノワイヤを設けることで、正孔の経路は劇的に減少し、それにより正孔捕集の増加及び対応する装置効率が得られる。本明細書中に記載した実施形態は、ナノワイヤ中に電荷キャリヤー用の効率的経路を設けると同時に向上した光学的性質を付与することで先行技術の非晶質シリコン太陽電池を改良したものである。
101 Siナノワイヤ
102 基板
103 第一のコンフォーマルSi層
104 第二のコンフォーマルSi層
105 導電性透明材料
106 上部接点
Claims (10)
- 以下のa)〜e)を備える光起電力装置。
a)基板上に実質的に垂直な配向で設けられた複数のSiナノワイヤであって、第一のタイプのドーピングを有するSiナノワイヤ、
b)複数のSiナノワイヤ上にコンフォーマルに設けられた非晶質真性シリコンの第一のコンフォーマルSi層であって、光起電力装置に当たる光の大部分を効果的に吸収する第一のコンフォーマルSi層、
c)第一のコンフォーマルSi層上にコンフォーマルに設けられた第二のコンフォーマルSi層であって、第二のタイプのドーピングを有していて電荷分離接合を形成する第二のコンフォーマルSi層、
d)第二のコンフォーマルSi層上に設けられた導電性材料層、及び
e)装置を外部回路に接続するための上部接点及び下部接点であって、複数のナノワイヤと電気的に接触している下部接点及び第二のコンフォーマルSi層と電気的に接触している上部接点。 - さらに、基板上に存在するか或いは基板と一体をなすナノポーラステンプレートであって、そこからSiナノワイヤが延び出ているナノポーラステンプレートを含む、請求項1記載の光起電力装置。
- 基板が透明である、請求項1記載の光起電力装置。
- Siナノワイヤがpドープされている、請求項1記載の光起電力装置。
- 第二のコンフォーマルSi層がnドープされている、請求項1記載の光起電力装置。
- 導電性材料層が金属であり、導電性材料層が約50nm〜約2μmの厚さを有する、請求項1記載の光起電力装置。
- 導電性材料層が透明であり、導電性材料層が約50〜約200nmの厚さを有する、請求項1記載の光起電力装置。
- 導電性材料層が上部接点を形成する、請求項1記載の光起電力装置。
- 光起電力装置の製造方法であって、
a)基板上に複数のナノワイヤを設ける段階であって、Siナノワイヤは表面の平面に対して実質的に垂直に配向していると共に、Siナノワイヤは第一のタイプのドーピングを有する段階、
b)複数のナノワイヤ上に真性シリコンの第一のコンフォーマルSi層をコンフォーマルに堆積させる段階、
c)第一のコンフォーマルSi層の回りに第二のコンフォーマルSi層を堆積させる段階であって、第二のコンフォーマルSi層は第二のタイプのドーピングを有していてSiナノワイヤ及び第一のコンフォーマルSi層と共に電荷分離接合を形成する段階、
d)第二のコンフォーマルSi層上に導電性透明材料を堆積させる段階、並びに
e)装置を外部回路に接続するための上部接点及び下部接点であって、複数のSiナノワイヤと電気的に接触している下部接点及び第二のコンフォーマルSi層と電気的に接触している上部接点を形成する段階
を含んでなる方法。 - 請求項1記載の光起電力装置の1以上を含んでなるソーラーパネルであって、かかる装置を周囲の大気環境から隔離すると共に電力の発生を可能にするソーラーパネル。
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Also Published As
Publication number | Publication date |
---|---|
EP1892768A3 (en) | 2015-12-09 |
AU2007211902B2 (en) | 2013-08-29 |
US20080047604A1 (en) | 2008-02-28 |
EP1892768A2 (en) | 2008-02-27 |
CN101136444A (zh) | 2008-03-05 |
MX2007010330A (es) | 2009-01-30 |
US7893348B2 (en) | 2011-02-22 |
CN101136444B (zh) | 2012-04-25 |
AU2007211902A1 (en) | 2008-03-13 |
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