Modeled Performance of PolycrystallineThin-Film Tandem Solar Cells

Timothy J. Coutts; Keith A. Emery; J. Scott Ward

doi:10.1002/pip.419

Modeled Performance of PolycrystallineThin-Film Tandem Solar Cells

Timothy J. Coutts, Keith A. Emery, J. Scott Ward

Chemistry and Nanoscience

National Renewable Energy Laboratory

Research output: Contribution to journal › Article › peer-review

119 Scopus Citations

Abstract

The optimum bandgaps for two-terminal monolithic multijunction devices have typically been studied under a fixed set of environmental conditions, using ideal device models. This study examines the effects of a realistic dark-current for typical state-of-the-art thin-film polycrystalline cells on the optimum energy gap for a series-connected two-junction cell The optimum energy gaps are compared for a series-connected tandem cell under standard reference conditions and the energy produced for five different reference days where the temperature, spectral irradiance and total irradiance varied. The optimum bandgaps were found to be 1.72 ± 0.02 eV for the top cell and 1.14 ± 0.02 eV for the bottom cell. Published in 2002 by John Wiley & Sons, Ltd.

Original language	American English
Pages (from-to)	195-203
Number of pages	9
Journal	Progress in Photovoltaics: Research and Applications
Volume	10
Issue number	3
DOIs	https://doi.org/10.1002/pip.419 https://doi.org/10.1002/pip.419
State	Published - 2002

NREL Publication Number

NREL/JA-520-30265

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AB - The optimum bandgaps for two-terminal monolithic multijunction devices have typically been studied under a fixed set of environmental conditions, using ideal device models. This study examines the effects of a realistic dark-current for typical state-of-the-art thin-film polycrystalline cells on the optimum energy gap for a series-connected two-junction cell The optimum energy gaps are compared for a series-connected tandem cell under standard reference conditions and the energy produced for five different reference days where the temperature, spectral irradiance and total irradiance varied. The optimum bandgaps were found to be 1.72 ± 0.02 eV for the top cell and 1.14 ± 0.02 eV for the bottom cell. Published in 2002 by John Wiley & Sons, Ltd.

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Modeled Performance of PolycrystallineThin-Film Tandem Solar Cells

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