CIGS cell with ultra-thin glass substrate hits record
Scientists at the Korea Institute of Energy Research (KIER) have developed a CIGS solar cell with ultra-thin glass (UTG), an
The UTG is specifically designed for use in space applications such as a cover glass for PV whereby it is laminated atop of the solar cells. Its cerium content provides protection from high energy radiation.
The new cell concept was introduced in the study “ High-efficiency cadmium-free Cu (In,Ga)Se 2 flexible thin-film solar cells on ultra-thin glass as an emerging substrate,” published in the Journal of Alloys and Compounds.
Flexible metallic and polyimide foils are frequently used, but in this work an alternative substrate with attractive properties, ultra-thin glass (UTG) has been employed. CdTe solar cells with average efficiency reaching 14.7% AM1.5G efficiency have been produced on UTG of 100 μm thickness.
Ultra-thin glass is used as a flexible substrate for the CIGS technology. The Young's moduli of Mo and CIGS layers are measured by nanoindentation. The reported values are used to calculate the strain induced in CIGS in flexion. The strain is calculated for cells made on ultra-thin glass and on polyimide. Cu (In, Ga)Se 1. Introduction
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