Conrad, B.
and Hamadani, B.
(2021),
Investigating Sub-bandgap Spectral Effects in GaInP-on-Ge Solar Cells, 48th IEEE Photovoltaics Specialists Conference (PVSC), Virtual, MD, US, [online], https://doi.org/10.1109/PVSC43889.2021.9518844, https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=932528
(Accessed November 21, 2024)
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Investigating Sub-bandgap Spectral Effects in GaInP-on-Ge Solar Cells
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Abstract
There is a fundamental understanding in photovoltaics that sub-bandgap light will not be absorbed in the solar cell and therefore will not affect the power generation. We have shown a novel phenomenon in which sub-bandgap illumination is required for good electrical performance in III-V solar cells on heterosubstrates. We investigate this effect in GaInP cells on Ge substrates with current-voltage measurements under varying spectra and irradiances. This has implications for device characterization, the development of solar cells both on heterosubstrates and for conditions lacking long-wavelength light, and the prediction of device performance under spectra that differ from the test conditions.Proceedings Title
48th IEEE Photovoltaics Specialists Conference (PVSC)
Conference Dates
June 20-25, 2021
Conference Location
Virtual, MD, US
Pub Type
Conferences
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Keywords
III-V and Concentrator PV, Characterization of PV, Circuit analysis, Photovoltaic cells
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Created August 26, 2021, Updated February 28, 2024