Trench process and structure for backside contact solar cells with polysilicon doped regions
Patent
·
OSTI ID:1127135
A solar cell includes polysilicon P-type and N-type doped regions on a backside of a substrate, such as a silicon wafer. An interrupted trench structure separates the P-type doped region from the N-type doped region in some locations but allows the P-type doped region and the N-type doped region to touch in other locations. Each of the P-type and N-type doped regions may be formed over a thin dielectric layer. Among other advantages, the resulting solar cell structure allows for increased efficiency while having a relatively low reverse breakdown voltage.
- Research Organization:
- SunPower Corporation, San Jose, CA, USA
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- FC36-07G017043
- Assignee:
- SunPower Corporation (San Jose, CA)
- Patent Number(s):
- 8,673,673
- Application Number:
- 13/872,961
- OSTI ID:
- 1127135
- Country of Publication:
- United States
- Language:
- English
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