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Title: Role of polycrystallinity in CdTe and CuInSe{sub 2} photovoltaic cells. Annual subcontract report, 1 April 1991--31 March 1992

Technical Report ·
DOI:https://doi.org/10.2172/10133048· OSTI ID:10133048
 [1]
  1. Colorado State Univ., Fort Collins, CO (United States)

The limiting role of polycrystallinity in thin-film solar calls has been reduced somewhat during the past year, and efficiencies of both CdTe and CuInSe{sub 2} cells are approaching 15%. Quantitative separation of loss mechanisms shows that individual losses, with the exception of forward recombination current, can be made comparable to their single crystal counterparts. One general manifestation of the extraneous trapping states in that the voltage of all polycrystalline thin-film cells drifts upward by 10--50 mV following the onset of illumination.

Research Organization:
National Renewable Energy Lab. (NREL), Golden, CO (United States); Colorado State Univ., Fort Collins, CO (United States)
Sponsoring Organization:
USDOE, Washington, DC (United States)
DOE Contract Number:
AC02-83CH10093
OSTI ID:
10133048
Report Number(s):
NREL/TP-451-5190; ON: DE93000045
Resource Relation:
Other Information: PBD: Nov 1992
Country of Publication:
United States
Language:
English