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Recently, there has been increased interest in the use of flexible substrates for the fabrication of Cu(In,Ga)Se2 solar cells due to their light weight and easy application. This work focuses on the use of 150 μm thick Mo foils as substrates which has not received much attention compared to other metals such as Ti and Stainless Steel although the coefficient of expansion of Mo better matches that...
Ellipsometry is a useful tool for studying the optical properties of thin films such as photovoltaic devices. We employ Müller matrix ellipsometry to study the thin film photovoltaic material copper indium gallium selenide Cu(In,Ga)Se2 (CIGS), a commercially relevant material with high energy conversion efficiency. Confocal microscopy reveals an rms roughness of 68 nm, which greatly affects the ellipsometry...
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