期刊
IEEE JOURNAL OF PHOTOVOLTAICS
卷 8, 期 3, 页码 871-878出版社
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JPHOTOV.2018.2819664
关键词
Back-contact; interface; open-circuit voltage; photovoltaics; recombination; SCAPS-1D
资金
- Taiwan Ministry of Science and Technology [MOST 107-2218-E-006-022-MY3]
- U.S. Department of Energy [DE-EE-0007541]
- Texas State University
- National Renewable Energy Laboratory (NREL) [DE-AC36-08GO28308]
- First Solar, Inc.
- NREL
The open-circuit voltage (V-OC) in a generic TCO/buffer/absorber/back-contact thin-film solar cell device is a key parameter in the recombination analysis. In particular, V-OC is sensitively influenced by the interface recombination at the buffer/absorber front interface and at the absorber/back-contact interface. This paper reports the temperature, excitation light intensity, and wavelength-dependent open-circuit voltage analysis to separate and quantify recombination rates in solar cells at the front and back interfaces, in the depletion regions, and in the quasi-neutral region. The wavelength-dependent V-OC analysis is exploited to extract the absorber/back-contact recombination coefficient. The experimentally observed results are verified using SCAPS-1D (one dimensional-a solar cell capacitance simulator) simulation.
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