发明授权
- 专利标题: Solar cell
- 专利标题(中): 太阳能电池
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申请号: US12565849申请日: 2009-09-24
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公开(公告)号: US08802974B2公开(公告)日: 2014-08-12
- 发明人: Yasutaka Nishida , Michihiko Inaba , Shinya Sakurada , Satoshi Itoh
- 申请人: Yasutaka Nishida , Michihiko Inaba , Shinya Sakurada , Satoshi Itoh
- 申请人地址: JP Tokyo
- 专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人: Kabushiki Kaisha Toshiba
- 当前专利权人地址: JP Tokyo
- 代理机构: Amin, Turocy & Watson, LLP
- 优先权: JP2008-248757 20080926
- 主分类号: H01L31/032
- IPC分类号: H01L31/032
摘要:
A solar cell includes a p-n junction formed by joining a p-type semiconductor and an n-type semiconductor. The p-type semiconductor is a chalcopyrite compound semiconductor with a band gap of 1.5 eV or more within which an intermediate level exists with a half bandwidth of 0.05 eV or more. The intermediate level is different from an impurity level. The chalcopyrite compound semiconductor includes a first element having first electronegativity of 1.9 or more in Pauling units, the first element occupying a lattice site of the semiconductor. A portion of the first element is substituted with a second element having second electronegativity different from the first electronegativity, the second element being a congeneric element of the first element. The intermediate level is created by substituting the first element with the second element.
公开/授权文献
- US20100078072A1 SOLAR CELL 公开/授权日:2010-04-01