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Updated: May 2, 2026

Polycrystalline Silicon Thin-film Solar cells with Plasmonic-enhanced Light-trapping
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Trap-induced losses in hybrid photovoltaics
Feng Gao1, Zhe Li, Jianpu Wang
1Cavendish Laboratory, University of Cambridge , J J Thomson Avenue, Cambridge CB3 0HE, United Kingdom.
Abstract:
We investigate the loss mechanisms in hybrid photovoltaics based on blends of poly(3-hexylthiophene) with CdSe nanocrystals of various sizes. By combining the spectroscopic and electrical measurements on working devices as well as films, we identify that high trap-mediated recombination is responsible for the loss of photogenerated charge carriers in devices with small nanocrystals. In addition, we demonstrate that the reduced open-circuit voltage for devices with small nanocrystals is also caused by the traps.
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