Chalcogenide glass-ceramic with self-organized heterojunctions application to photovoltaic solar cells

Abstract : In this work, we present for the first time the concept of chalcogenide glass-ceramic for photovoltaic applications with the GeSe2 Sb2Se3 CuI system. It has been demonstrated that thin films, deposited with the sputtering technique, are amorphous and can be crystallized with appropriate heat treatment. The thin film glass-ceramic behaves as a p-type semiconductor, even if it contains p-type Cu2GeSe3 and n-type Sb2Se3. The conductivity of Sb2Se3 has been greatly improved by appropriate iodine doping. The first photovoltaic solar cells based on the association of iodine-doped Sb2Se3 and the glass-ceramic thin films give a short-circuit current density J(SC) of 10 mA/cm(2) and an open-circuit voltage V-OC of 255 mV, with a power conversion efficiency of about 0.9%.
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Xianghua Zhang, Ilia Korolkov, Bo Fan, Michel Cathelinaud, Hongli Ma, et al.. Chalcogenide glass-ceramic with self-organized heterojunctions application to photovoltaic solar cells. EPJ Photovoltaics, EDP sciences, 2018, 9, pp.3. ⟨10.1051/epjpv/2018002⟩. ⟨hal-01806901⟩

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