文章摘要
刘仪柯,唐雅琴,蒋良兴,刘芳洋,秦勤,张坤.溅射Cu-Zn-Sn金属预制层后硫(硒)化法制备Cu2ZnSn(SxSe1-x)4薄膜及其光伏特性[J].材料导报,2018,32(9):1412-1416, 1422
溅射Cu-Zn-Sn金属预制层后硫(硒)化法制备Cu2ZnSn(SxSe1-x)4薄膜及其光伏特性
Photovoltaic Characteristics of Cu2ZnSn(SxSe1-x)4 Thin Films Synthesized via the Process of Cu-Zn-Sn Presputtering and Subsequent Sulfurization (Selenization) Annealing
  
DOI：10.11896/j.issn.1005-023X.2018.09.003
中文关键词: 薄膜太阳电池 铜锌锡硫硒 溅射预制层 硫化 硒化 退火制度
英文关键词: thin film solar cell, Cu2ZnSn(SxSe1-x)4, presputtering, sulfurization, selenization, annealing scheme
基金项目:国家自然科学基金(51674298；51604088)；贵州省科技计划项目(黔科合基础[2017]1064；黔科合LH字[2015]7091)
作者单位E-mail
刘仪柯 贵州理工学院材料与冶金工程学院,贵阳 550003 liuyikecsu@163.com,lxjiang@csu.edu.cn 
唐雅琴 贵州理工学院材料与冶金工程学院,贵阳 550003  
蒋良兴 中南大学冶金与环境学院, 长沙 410083 liuyikecsu@163.com,lxjiang@csu.edu.cn 
刘芳洋 中南大学冶金与环境学院, 长沙 410083  
秦勤 中南大学冶金与环境学院, 长沙 410083  
张坤 格林美股份有限公司,深圳 518101  
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中文摘要:
      采用溅射工艺制备Cu-Zn-Sn金属预制层并尝试在多种退火方案(硫化退火、硒化退火、不同温度下硫化后硒化)下对其进行退火处理,探索出一种只需采用金属预制层即可完成CZTSSe制备的退火工艺制度。通过扫描电镜对比研究了不同退火制度下Cu2ZnSn(SxSe1-x)4薄膜的形貌差异,发现低温硫化后硒化工艺可以有效减少因硫化温度过高引起的薄膜中孔洞较多的问题,有利于薄膜的平整与致密化。在此基础上,采用X射线荧光光谱、扫描电镜、X射线衍射及拉曼光谱对不同硫化温度(200 ℃、300 ℃、 400 ℃、 500 ℃)下硫化后硒化工艺制备的Cu2ZnSn(SxSe1-x)4薄膜的成分、形貌、物相结构及结晶性能进行了表征和分析。结果表明,300 ℃下硫化后硒化获得的Cu2ZnSn(SxSe1-x)4较其他温度下硫化后硒化获得的产物有着更好的形貌及结晶性能,其器件的光电转换效率为2.09%,远高于500 ℃下硫化后硒化工艺所得薄膜器件的效率(0.94%)。
英文摘要:
      By applying several annealing schemes (sulfurization, selenization, sulfurization at various temperatures→selenization) to the annealing process of the magnetron sputtered Cu-Zn-Sn coating, this work made a successful attempt to develop an annealing scheme that enables the production of CZTSSe thin film on the basis of merely a presputtered metallic coating. We conducted the morphological analyses upon the Cu2ZnSn(SxSe1-x)4 films formed through different annealing schemes and revealed that a relatively low sulfurization temperatures can benefit the flatness and densification of the resultant film by attenuating the heat-induced porosification effect. A comparative study was then carried out upon the effect of the sulfurization temperature (200 ℃, 300 ℃, 400 ℃, 500 ℃) on the properties of Cu2ZnSn(SxSe1-x)4 thin films, by measuring the films’ composition, morphology, structure and crystallinity via XRF, SEM, XRD and Raman scattering. Among the above competitors, the Cu2ZnSn(SxSe1-x)4 film obtained with 300 ℃ sulfurization→selenization exhibits the most favorable morphology and crystallinity, as well as a power conversion efficiency of 2.09% which far outperforms the one with 500 ℃ sulfurization→selenization (0.94%) owing to the boost of short-circuit current and fill factor.
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