Effects of Se Flux on the Microstructure of Cu(In,Ga)Se[sub 2] Thin Film Deposited by a Three-Stage Co-evaporation Process
- 1 January 2006
- journal article
- Published by The Electrochemical Society in Electrochemical and Solid-State Letters
- Vol. 9 (8), A382-A385
- https://doi.org/10.1149/1.2208011
Abstract
(CIGS) films were deposited by three-stage co-evaporation of elemental sources and effects of Se flux on CIGS film were investigated. With an appropriate Se flux , faceted and tightly connected CIGS grains were developed at the film surface, and the highest conversion efficiency, 17.57%, was achieved in solar cells. When the Se flux was high, large grains with less (112) preferred orientation and pores along the grain boundaries were observed. As a result, the cell conversion efficiency was deteriorated. Precise control of Se flux, especially at the third stage, was critical to obtain high-performance CIGS solar cells.Keywords
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