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An efficiency of 8.6% on Cu2ZnSnS4 (CZTS) submodule is achieved by revising absorber formation and optimizing buffer layer thickness with the improved absorber. The CZTS submodule is fabricated by following process. Mo back electrode and metal precursor are deposited by vacuum-based processes. The CZTS absorber layer is formed through high-temperature annealing with sulfur containing gas. CdS buffer...
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