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Interface Investigation of ZnO/CdS/CuIn1−xGaxSe2/Mo Solar Cells

Published online by Cambridge University Press:  21 March 2011

F.S. Hasoon
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
H.A. Al-Thani
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
K.M. Jones
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
Y. Yan
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
H. R. Moutinho
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
M. Young
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
S. E. Asher
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
J. Alleman
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
R. Bhattacharya
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
K. Ramanathan
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
J. Keane
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
M.M. Al-Jassim
Affiliation:
National Renewable Energy Laboratory, 1617 Cole Blvd., Golden, CO 80401, USA
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Abstract

Graded-band-gap CuIn1−xGaxSe2 (CIGS) absorbers with Ga/Ga+In value in the 20%-30% range have a demonstrated efficiency of 18.8%. For CdS-containing devices, the shortcircuit current density (Jsc) has almost reached its expected maximum. However, the open-circuit voltage of CIGS solar cells is limited by the surface microstructure and chemistry. In this work, we examine the microstructural properties and chemistry of CIGS. We also attempted to correlate the above observations and device performance.

Type
Research Article
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

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