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Method of junction formation for CIGS photovoltaic devices

Patent ·
OSTI ID:1175682

Sulfur is used to improve the performance of CIGS devices prepared by the evaporation of a single source ZIS type compound to form a buffer layer on the CIGS. The sulfur may be evaporated, or contained in the ZIS type material, or both. Vacuum evaporation apparatus of many types useful in the practice of the invention are known in the art. Other methods of delivery, such as sputtering, or application of a thiourea solution, may be substituted for evaporation.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC36-99GO10337
Assignee:
Energy Photovoltaics (Princeton, NJ)
Patent Number(s):
7,019,208
Application Number:
10/251,337
OSTI ID:
1175682
Country of Publication:
United States
Language:
English

References (3)

Progress toward 20% efficiency in Cu(In,Ga)Se2 polycrystalline thin-film solar cells journal July 1999
The role of Cu(InGa)(SeS)/sub 2/ surface layer on a graded band-gap Cu(InGa)Se/sub 2/ thin-film solar cell prepared by two-stage method conference January 1996
Advances in large area CIGS technology conference September 2000

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