简单的溶胶–凝胶法制备致密的铜锌锡硫硒薄膜(英文)  

Compact Cu_2ZnSn(S,Se)_4 Thin Films Fabricated by a Simple Sol-Gel Technique

作　　者：张克智[1] 陶加华[1] 刘俊峰[1] 何俊[1] 董宇晨[1] 孙琳[1] 杨平雄[1] 褚君浩[1] 

机构地区：[1]华东师范大学电子工程系,极化材料与器件教育部重点实验室,上海200241

出　　处：《无机材料学报》2014年第7期781-784,共4页Journal of Inorganic Materials

基　　金：National Natural Science Foundation of China(61106064);Science and Technology Commission of Shanghai Municipality Project(11ZR1411400,10JC1404600)

摘　　要：采用溶胶–凝胶后硒化法制备了铜锌锡硫硒薄膜,其薄膜表面平整、无裂纹。通过简化铜锌锡硫前驱体溶胶的制备以及后退火时避免使用硫化氢气体(H2S)等方法使铜锌锡硫硒薄膜的制备工艺得到简化。选用低毒有机物乙二醇为溶剂,Cu(CH3COO)2、Zn(CH3COO)2、SnCl2·2H2O和硫脲为原料,制备铜锌锡硫前驱体溶胶。XRD、Raman、EDX和SEM分析表明制备的铜锌锡硫硒薄膜为锌黄锡矿结构,所有薄膜均贫铜富锌,用0.2 g硒粉、硒化20 min得到的铜锌锡硫硒薄膜其结晶较好,表面晶粒可达1.0μm左右。透射光谱分析结果表明,随硒含量的增加,铜锌锡硫硒薄膜的光学带隙从1.51 eV减小到1.14 eV。Cu2ZnSn（Sl.xSex）4 （CZTSSe） thin films with a compact and crack-free morphology and large-grain are ob- tained via a green Sol-Gel process and post-selenization. The fabrication of CZTSSe films is simplified by predigest- ing preparation process of Cu2ZnSnS4 （CZTS） precusor solution and avoiding using sulflarization. Low-toxic ethylene glycol is selected as solvent, and Cu（CH3COO）2, Zn（CH3COO）2, SnC12.2H20 and thiourea are used as raw materials. Energy dispersive X-ray analyzer （EDX）, X-ray diffraction （XRD） and Raman spectra results indicate that all of CZTSSe thin films with the kesterite structure are of Cu-poor and Zn-rich states. Optical band gap （Eop0 of the CZTSSe thin films decreases from 1.51 to 1.14 eV with increasing Se content.

关 键 词：济胶-凝胶 铜锌锡硫硼 游膜 钠化 

分 类 号：TQ174[化学工程—陶瓷工业]