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Fabrication of solar cells with counter doping prevention

Patent ·
OSTI ID:1082914
; ;
A solar cell fabrication process includes printing of dopant sources over a polysilicon layer over backside of a solar cell substrate. The dopant sources are cured to diffuse dopants from the dopant sources into the polysilicon layer to form diffusion regions, and to crosslink the dopant sources to make them resistant to a subsequently performed texturing process. To prevent counter doping, dopants from one of the dopant sources are prevented from outgassing and diffusing into the other dopant source. For example, phosphorus from an N-type dopant source is prevented from diffusing to a P-type dopant source comprising boron.
Research Organization:
SunPower Corporation (San Jose, CA)
Sponsoring Organization:
USDOE
DOE Contract Number:
FC36-07GO17043
Assignee:
SunPower Corporation (San Jose, CA)
Patent Number(s):
8,377,738
Application Number:
12/828,573
OSTI ID:
1082914
Country of Publication:
United States
Language:
English

References (4)

A flat-plate concentrator: micro-concentrator design overview
  • Mulligan, W. P.; Terao, A.; Daroczi, S. G.
  • 28th IEEE Photovoltaic Specialists Conference, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036) https://doi.org/10.1109/PVSC.2000.916177
conference January 2000
A mirror-less design for micro-concentrator modules
  • Terao, A.; Mulligan, W. P.; Daroczi, S. G.
  • 28th IEEE Photovoltaic Specialists Conference, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036) https://doi.org/10.1109/PVSC.2000.916158
conference January 2000
Development of chip-size silicon solar cells
  • Mulligan, W. P.; Terao, A.; Smith, D. D.
  • 28th IEEE Photovoltaic Specialists Conference, Conference Record of the Twenty-Eighth IEEE Photovoltaic Specialists Conference - 2000 (Cat. No.00CH37036) https://doi.org/10.1109/PVSC.2000.915778
conference January 2000
The promise of concentrators journal January 2000

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Related Subjects

14 SOLAR ENERGY