发明申请
- 专利标题: PHOTOVOLTAIC CELL COMPRISING A THIN LAMINA HAVING EMITTER FORMED AT LIGHT-FACING AND BACK SURFACES
- 专利标题(中): 具有轻型和背面形成的薄层的薄片的光电池
-
申请号: US12568940申请日: 2009-09-29
-
公开(公告)号: US20110073175A1公开(公告)日: 2011-03-31
- 发明人: Mohamed M. Hilali , Christopher J. Petti
- 申请人: Mohamed M. Hilali , Christopher J. Petti
- 申请人地址: US CA San Jose
- 专利权人: TWIN CREEKS TECHNOLOGIES, INC.
- 当前专利权人: TWIN CREEKS TECHNOLOGIES, INC.
- 当前专利权人地址: US CA San Jose
- 主分类号: H01L31/00
- IPC分类号: H01L31/00 ; H01L31/18
摘要:
A photovoltaic cell is described having emitter portions formed at both a light-facing surface and a back surface of the cell. In some embodiments, heavily doped emitter regions extend between the front and back emitter regions, connecting them electrically. Use of this structure is particularly well-adapted to a cell formed by implanting a semiconductor donor body with hydrogen and/or helium ions, affixing the donor body to a receiver element, cleaving a lamina from the donor body, and completing fabrication of a photovoltaic cell comprising the lamina. The emitter portion formed at the unbonded surface may comprise amorphous silicon. The lamina may be thin, for example 10 microns thick or less.