化学学报 ›› 2014, Vol. 72 ›› Issue (6): 643-652.DOI: 10.6023/A14040259 上一篇    下一篇

综述

太阳能电池材料-铜锌锡硫化合物薄膜制备及器件应用研究进展

范勇a, 秦宏磊b, 密保秀b, 高志强a, 黄维a,b   

  1. a. 江苏省平板显示与固体照明工程中心 南京邮电大学材料科学与工程学院 南京 210046;
    b. 江苏省有机电子与信息显示重点实验室 南京邮电大学先进材料研究院 南京 210046
  • 收稿日期:2014-04-18 出版日期:2014-06-14 发布日期:2014-05-12
  • 通讯作者: 密保秀,高志强,黄维 E-mail:iambxmi@njupt.edu.cn;iamzqgao@njupt.edu.cn;iamwhuang@njupt.edu.cn
  • 基金资助:

    项目受国家自然科学基金面上项目(Nos.61077021,61076016)及南京邮电大学基金(Nos.NY212050,NY212076)资助.

Progress in the Fabrication of Cu2ZnSnS4 Thin Film for Solar Cells

Fan Yonga, Qin Hongleib, Mi Baoxiub, Gao Zhiqianga, Huang Weia,b   

  1. a. Jiangsu Engineering Center for Flat Panel Displays & Solid State Lighting, School of Materials Science & Engineering, Nanjing University of Post & Telecommunications, Nanjing 210046;
    b. Jiangsu Key Laboratory for Organic Electronics & Information Displays, Institute of Advanced Materials IAM, Nanjing University of Post &Telecommunications, Nanjing 210046
  • Received:2014-04-18 Online:2014-06-14 Published:2014-05-12
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Nos.61077021, 61076016) and the Funding from Nanjing University of Post & Telecommunications (Nos.NY212050, NY212076).

锌黄锡矿结构的CZTS(铜锌锡硫)材料与目前在薄膜太阳能电池领域表现出色的黄铜矿结构的CIGS(铜铟镓硒)材料具有相似的晶体结构,且CZTS有着很好的光电性能,组成元素在地球上含量丰富,安全无毒,非常适合用来发展高效、廉价的太阳能电池.近期CZTS类太阳能电池的最高效率已达到12.6%,在科研和产业领域引起了广泛关注.在简介了“新星”太阳能电池材料CZTS的性质及薄膜太阳能电池器件的基本结构之后,重点总结了CZTS薄膜的制备方法(真空、非真空法)以及相应器件效率,其中对众多非真空制备法进行了独到的归类总结.最后,对CZTS薄膜的优化方法进行了分析,并对其未来发展方向做了展望.

关键词: 铜锌锡硫, 薄膜制备, 太阳能电池, 效率, 优化

Cu(In,Ga)Se2 (CIGS) is a widely investigated material for thin film solar cells in the last decade.However, it has the concern of short availability of constituent elements (e.g. In, Ga) which limits its development.Research focused on new substitute of light absorber is eagerly needed.As an earth-abundant semiconductor, CZTS (Cu2ZnSnS4) has attracted considerable interest recently.CZTS has lots of similarities to CIGS, and is considered to be a promising material in the field of thin film solar cells owning to its fascinating optoelectronic properties, low-cost fabrication, and non-toxic nature.In this article, after introducing the features of CZTS material and the basic structure of CZTS thin film solar cells, different methods for the fabrication of CZTS thin films, as well as the corresponding device performance are discussed.CZTS thin film fabrication methods include vacuum based approaches and non-vacuum based approaches, with the former usually has the advantage of easy control of the chemical composition as well as good reproducibility; and the latter often has merits of low-cost, less-energy consumable, and suitable for large area deposition.Firstly, vacuum based approaches, including sputtering, evaporation and pulsed laser deposition, are discussed.Secondly, according to the different condition of the precursors, three subtypes of non-vacuum based approaches are presented (nanoparticle ink precursors, solution precursors, mixture precursors of solution and nanoparticle ink).Meanwhile, corresponding device efficiencies are summarized.Up to date, the power conversion efficiencies of 12.6% for CZTS based solar cells have been achieved, which is enormously encouraging.The new champion device was fabricated using a recently described hydrazine pure-solution approach, which significantly improves the coating uniformity and film structure.What's more, various film treatment strategies to optimize the CZTS thin film, such as selenization/sulfurization and elemental composition tuning (e.g. S/Se, Zn/Cu), are outlined here; the focus of future research and development are proposed.

Key words: CZTS, thin film fabrication, solar cells, efficiencies, optimization