物理化学学报 >> 2012, Vol. 28 >> Issue (08): 1913-1922.doi: 10.3866/PKU.WHXB201205153

电化学和新能源 上一篇    下一篇

Ga和Cu/In衬底上电沉积金属Ga

张超, 敖建平, 王利, 姜韬, 孙国忠, 何青, 周志强, 孙云   

  1. 南开大学光电子薄膜器件与技术研究所, 天津市光电子薄膜器件与技术重点实验室, 光电信息技术科学教育部重点实验室, 天津 300071
  • 收稿日期:2012-03-29 修回日期:2012-05-14 发布日期:2012-07-10
  • 通讯作者: 敖建平 E-mail:aojp@nankai.edu.cn
  • 基金资助:

    教育部博士点基金(20090031110031)资助项目

Electrodepositied Gallium on Gallium and Copper/Indium Substratess

ZHANG Chao, AO Jian-Ping, WANG Li, JIANG Tao, SUN Guo-Zhong, HE Qing, ZHOU Zhi-Qiang, SUN Yun   

  1. Key Laboratory of Optoelectronic Information Technology, Ministry of Education, Tianjin Key Laboratory of Photo-Electronic Thin Film Devices and Technology, Institute of Photo-Electronic Thin FilmDevices and Technique, Nankai University, Tianjin 300071, P. R. China
  • Received:2012-03-29 Revised:2012-05-14 Published:2012-07-10
  • Contact: AO Jian-Ping E-mail:aojp@nankai.edu.cn
  • Supported by:

    The project was supported by Ph. D Programs Foundation of Ministry of Education of China (20090031110031).

摘要:

在酸性水溶液中,分别在金属Ga和Cu/In衬底上进行了Ga电沉积的研究。用循环伏安法研究了导电盐、pH值对电沉积Ga的影响。系统研究了Ga的沉积过程,发现Ga会逐渐向薄膜内部扩散,在Cu/In界面上与CuIn合金反应生成CuGa2合金。针对Cu/In薄膜和Ga薄膜是活泼金属的特点,在溶液中加入三乙醇胺有效地保护了Cu/In薄膜和Ga金属薄膜不被氧化,并且提高了Ga沉积的电流效率。在Cu/In薄膜上制备出了均匀光亮的金属Ga薄膜。对电沉积出Cu-In-Ga预置层进行了硒化处理,得到了质量较好的Cu(In1-xGax)Se2(CIGS)薄膜,并制备了太阳电池。电池效率达到了9.42%。

关键词: 电化学沉积, Cu(In1-xGax)Se2, 循环伏安法, 金属预置层, 太阳电池

Abstract:

We investigate the electrodeposition of gallium metallic precursor on gallium and Cu/In substrates from acidic aqueous solutions. The effect of the supporting electrolyte and the solution pH value for the electrodeposition of Ga is investigated by cyclic voltammetry. During Ga electrodeposition, gallium gradually diffuses into the film, and reacts with CuIn alloy to produce CuGae2 at the Cu/In interface. We use triethanolamine to protect the Cu/In and Ga films from being oxidized, and thus this improves the current efficiency of Ga-electrodeposition. The Cu-In-Ga films are annealed in an Se atmosphere to produce In1-xGaxSee2(CIGS) thin films with high quality, and the efficiency of the solar cell prepared using these films is 9.42%.

Key words: Electrodeposition, Cu(In1-xGax)Se2, Cyclic voltammetry, Metallic precursor, Solar cell

MSC2000: 

  • O646