无机材料学报 ›› 2016, Vol. 31 ›› Issue (10): 1141-1146.DOI: 10.15541/jim20160186 CSTR: 32189.14.10.15541/jim20160186

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液相辅助热压烧结制备Cu(In, Ga)Se2靶材的研究

黄耀芹1, 郑国源1, 莫淑一1, 何丽秋2, 王东生2, 龙 飞1   

  1. (1. 桂林理工大学 材料科学与工程学院, 广西高校有色金属清洁冶炼与综合利用重点实验室, 桂林 541004; 2. 广西地凯光伏能源有限公司, 南宁 530003)
  • 收稿日期:2016-03-28 修回日期:2016-05-02 出版日期:2016-10-20 网络出版日期:2016-09-23
  • 作者简介:黄耀芹(1991–), 女, 硕士研究生. E-mail: m15296818093@163.com
  • 基金资助:
    广西自然科学基金(2014GXNSFFA118004);教育部“新世纪优秀人才支持计划”(NCET-12-0655)

Liquid-assisted Hot-pressed Sintering of Cu(In, Ga)Se2 Targets

HUANG Yao-Qin1, ZHENG Guo-Yuan1, MO Shu-Yi1, HE Li-Qiu2, WANG Dong-Sheng2, LONG Fei1   

  1. (1. Guangxi Key Laboratory in Universities of Clean Metallurgy and Comprehensive Utilization for Non-ferrous Metals Resources, College of Materials Science and Engineering, Guilin University of Technology, Guilin 541004, China; 2. Guangxi Dikai PV Energy Co., Ltd, Nanning 530003, China)
  • Received:2016-03-28 Revised:2016-05-02 Published:2016-10-20 Online:2016-09-23
  • About author:HUANG Yao-Qin. E-mail: m15296818093@163.com
  • Supported by:
    Guangxi Natural Science Foundation (2014GXNSFFA118004);The Program for New Century Excellent Talents in University (NCET-12-0655)

摘要:

采用CuIn0.7Ga0.3Se2、In0.7Ga0.3Se和CuSe为原料, 一步热压烧结法制备CIGS靶材。通过阿基米德法、XRD、Raman、SEM和EDS等测试方法研究了CuSe液相辅助烧结对靶材的相对密度、物相组成、结构、形貌以及成份的影响。结果表明, 加入CuSe在高温下产生液相能显著促进烧结, 比不加入CuSe的体系的烧结温度下降了50℃。当烧结温度为575℃时, 获得的靶材相对密度为96.18%, 物相单一纯净, 微观结构致密, 晶粒发育良好。以摩尔比为Cu : In : Ga : Se=23.0 : 18.2 : 6.5 : 52.3的靶材, 通过溅射-热处理法制备CIGS薄膜, 并完成AZO/ZnO/ CdS/CIGS/Mo单电池的组装(0.25 cm2), 获得了9.6%的光电转换效率。

关键词: CIGS, 热压烧结, 靶材, 转换效率

Abstract:

CIGS target was prepared by one step hot-pressing sintering using CuIn0.7Ga0.3Se2, In0.7Ga0.3Se and CuSe as precursor powder. Archimedes method, XRD, Raman, SEM, and EDS were carried out to investigate the effects of liquid-assisted sintering on the relative density, phase, structure, morphology, and composition of CIGS target. The results showed that CuSe would turn into liquid phase when temperature was increased to the liquid phase points. The liquid phase can significantly reduce sintering temperature (about 50℃ dropping) and accelerate the sintering process. When sintered at 575℃, the target can obtain the relative density of 96.18%, single phase, dense microstructure with good grain growth. In addition, using the target with molar ratio of Cu : In : Ga : Se =23.0 : 18.2 : 6.5 : 52.3, CIGS thin films were also prepared by sputtering-heat treatment, followed assembled into AZO/ZnO/CdS/CIGS/Mo solar cell. The fabricated CIGS solar cells presented a photoelectric conversion efficiency of 9.6%.

Key words: CIGS, hot-pressing sintering, target, conversion efficiency

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