物理化学学报 >> 2011, Vol. 27 >> Issue (12): 2826-2830.doi: 10.3866/PKU.WHXB20112826

电化学和新能源 上一篇    下一篇

以乙醇作溶剂电沉积制备CIGS薄膜

王信春, 胡彬彬, 王广君, 杨光红, 万绍明, 杜祖亮   

  1. 河南大学特种功能材料教育部重点实验室, 河南开封 475004
  • 收稿日期:2011-07-25 修回日期:2011-09-13 发布日期:2011-11-25
  • 通讯作者: 杜祖亮 E-mail:zld@henu.edu.cn, zldu66@163.com
  • 基金资助:

    国家自然科学基金(20371015)和教育部科技创新工程重大项目培育资金项目(708062)资助项目

Preparation of CIGS Thin Films by Electrodeposition Method Using Ethanol as a Solvent

WANG Xin-Chun, HU Bin-Bin, WANG Guang-Jun, YANG Guang-Hong, WAN Shao-Ming, DU Zu-Liang   

  1. Key Laboratory for Special Functional Materials of Ministry of Education, Henan University, Kaifeng 475004,Henan Province, P. R. China
  • Received:2011-07-25 Revised:2011-09-13 Published:2011-11-25
  • Contact: DU Zu-Liang E-mail:zld@henu.edu.cn, zldu66@163.com
  • Supported by:

    The project was supported by the National Natural Science Foundation of China (20371015) and Cultivation Fund of Key Scientific and Technical Innovation Project, Ministry of Education of China (708062).

摘要: 利用恒电位电沉积法在以乙醇为溶剂的溶液中制备了铜铟镓硒(CIGS)薄膜. 并采用扫描电子显微镜(SEM)、X 射线能谱仪(EDS)、X射线衍射仪(XRD)和紫外-可见-近红外(UV-VIS-NIR)分光光度计分别对薄膜的形貌、成分、晶体结构和吸收特性进行了表征. 结果表明在-1.6 V(相对于饱和甘汞电极电位)工作电位下沉积的薄膜经450 °C退火后能够形成形貌均匀致密、结晶性良好、带隙约为1.17 eV的黄铜矿结构CuIn0.7Ga0.3Se2薄膜. 实验过程中发现, 以乙醇为溶剂可以有效避免在水溶液中出现的析氢现象, 减小了沉积电位的限制.

关键词: CIGS薄膜, 电沉积, 乙醇, 析氢, 太阳能电池

Abstract: We prepared copper indium gallium diselenide (CIGS) thin films by potentiostatic electrodeposition in an ethanol solution. The thin films were characterized by scanning electron microscopy (SEM), X-ray energy dispersive spectrometry (EDS), X-ray diffraction (XRD), and UV-visible-near infrared (UV-VIS-NIR) spectrophotometry to determine their morphology, composition, crystal structure, and absorption properties. The results show that the chalcopyrite structured CuIn0.7Ga0.3Se2 thin films can be obtained by annealing the electrodeposited films at -1.6 V (vs SCE) at 450 °C. The obtained thin film has uniform morphology, good crystallinity, and a bandgap of about 1.17 eV. We found that ethanol as a solvent can effectively avoid the hydrogen evolution phenomenon, which often occurs in aqueous solution and reduces the deposition potential limitation.

Key words: CIGS thin film, Electrodeposition, Ethanol, Hydrogen evolution, Solar cell

MSC2000: 

  • O646