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- W2099332521 abstract "We report on light-induced electrical and macroscopic changes in hydrogenated polymorphous silicon (pm-Si:H) PIN solar cells. To explain the particular light-soaking behavior of such cells – namely an increase of the open circuit voltage (Voc) and a rapid drop of the short circuit current density (Jsc) – we correlate these effects to changes in hydrogen incorporation and structural properties in the layers of the cells. Numerous techniques such as current-voltage characteristics, infrared spectroscopy, hydrogen exodiffusion, Raman spectroscopy, atomic force microscopy, scanning electron microscopy and spectroscopic ellipsometry are used to study the light-induced changes from microscopic to macroscopic scales (up to tens of microns). Such comprehensive use of complementary techniques lead us to suggest that light-soaking produces the diffusion of molecular hydrogen, hydrogen accumulation at p-layer/substrate interface and localized delamination of the interface. Based on these results we propose that light-induced degradation of PIN solar cells has to be addressed from not only as a material issue, but also a device point of view. In particular we bring experimental evidence that localized delamination at the interface between the p-layer and SnO2 substrate by light-induced hydrogen motion causes the rapid drop of Jsc." @default.
- W2099332521 created "2016-06-24" @default.
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- W2099332521 date "2012-01-01" @default.
- W2099332521 modified "2023-09-25" @default.
- W2099332521 title "Light induced electrical and macroscopic changes in hydrogenated polymorphous silicon solar cells" @default.
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- W2099332521 doi "https://doi.org/10.1051/epjpv/2012005" @default.
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