Electroabsorption and transport measurements and modeling in amorphous-silicon-based solar cells [electronic resource] : Phase I technical progress report, 24 March 1998--23 March 1999

Published: Washington, D.C. : United States. Dept. of Energy, 1999.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description: vp : digital, PDF file
Additional Creators: United States. Department of Energy and United States. Department of Energy. Office of Scientific and Technical Information

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Summary

This report describes work done by the Syracuse University during Phase 1 of this subcontract. Researchers performed work in the following areas: (1) In ``Electroabsorption measurements and built-in potentials in a-Si:H-based solar cells and devices'', researchers obtained an estimate of Vbi = 1.17 V in cells with a-SiGe:H absorber layers from United Solar Systems Corp. (2) In ``Solar cell modeling employing the AMPS computer program'', researchers began operating a simple AMPS modeling site and explored the effect of conduction bandtail width on Voc computed analytical approximations and the AMPS program. The quantitative differences between the two procedures are discussed. (3) In ``Drift mobility measurements in a-Si:H made with high hydrogen dilution'', researchers measured electron and hole mobilities in several n/i/Ni (semitransparent) cells from Pennsylvania State University with a-Si absorber layers made under maximal hydrogen dilution and found a modest increase in hole mobility in these materials compared to conventional a-Si:H. (4) In ``Electroabsorption spectroscopy in solar cells'', researchers discovered and interpreted an infrared absorption band near 1.0 eV, which they believe is caused by dopants and defects at the n/i interface of cells, and which also has interesting implications for the nature of electroabsorption and for the doping mechanism in n-type material.

Report Numbers

E 1.99:nrel/sr-520-27665
nrel/sr-520-27665

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Note

Published through SciTech Connect.
12/17/1999.
"nrel/sr-520-27665"
Rao, P.; Schiff, E. A.; Lyou, J.; Yuan, Q.; Kopidakis, N.
National Renewable Energy Lab., Golden, CO (US)

Funding Information

AC36-99GO10337

View MARC record | catkey: 14454761