Cation substitution induced structural transition, band gap engineering and grain growth of Cu₂Cd_xZn_1−xSnS₄ thin films

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• 作者：Qiao Zhang^a ; Hongmei Deng^b ; Leilei Chen^a ; Lu Yu^a ; Jiahua Tao^a ; Lin Sun^a ; Pingxiong Yang^a ; ^{pxyang@ee.ecnu.edu.cn} ; Junhao Chu^a
• 关键词：Thin films ; Phase transitions ; Microstructure ; Optical properties
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：695
• 期：Complete
• 页码：482-488
• 全文大小：2223 K
• 卷排序：695

文摘

Cu2CdxZn1−xSnS4 (CCZTS) thin films have been prepared by direct liquid coating (DLC) technique. XRD and Raman demonstrate the structural transition from kesterite to stannite with increasing Cd content. The incorporation of Cd in Cu2ZnSnS4 (CZTS) contributes to formation of notable large grains. The band gap energy of CCZTS thin films can be tuned almost linearly between 1.35 and 1.15 eV varying with Cd compositions.