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Title: Hybrid emitter all back contact solar cell

An all back contact solar cell has a hybrid emitter design. The solar cell has a thin dielectric layer formed on a backside surface of a single crystalline silicon substrate. One emitter of the solar cell is made of doped polycrystalline silicon that is formed on the thin dielectric layer. The other emitter of the solar cell is formed in the single crystalline silicon substrate and is made of doped single crystalline silicon. The solar cell includes contact holes that allow metal contacts to connect to corresponding emitters.
Inventors:
;
Issue Date:
OSTI Identifier:
1246834
Assignee:
SunPower Corporation (San Jose, CA) GFO
Patent Number(s):
9,312,406
Application Number:
13/720,721
Contract Number:
FC36-07GO17043
Resource Relation:
Patent File Date: 2012 Dec 19
Research Org:
SunPower Corporation, San Jose, CA (United States)
Sponsoring Org:
USDOE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE

Other works cited in this record:

Photovoltaic solar cells: An overview of state-of-the-art cell development and environmental issues
journal, January 2005
  • Miles, R. W.; Hynes, K. M.; Forbes, I.
  • Progress in Crystal Growth and Characterization of Materials, Vol. 51, Issue 1-3, p. 1-42
  • DOI: 10.1016/j.pcrysgrow.2005.10.002

Method of fabricating back surface point contact solar cells
patent, May 1990

Radiation resistant passivation of silicon solar cells
patent, July 1991

Bilevel contact solar cells
patent, October 1991

Method of fabricating polysilicon emitters for solar cells
patent, October 1991

Method of forming thin silicon oxide film with high dielectric breakdown and hot carrier resistance
patent, December 1997

Back side contact solar cell with doped polysilicon regions
patent, December 2008

Back side contact solar cell with doped polysilicon regions
patent-application, December 2009

Photovoltaic solar cell
patent, September 2015

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