摘要
Since the year of 2009 when the first appli- cation of organohalide lead perovskite as the light har- vester in solar cells was reported, tremendous attention has been devoted to these new types of perovskite-based solid-state solar cells and remarkable power conversion efficiency of over 20 % has been achieved to date. In this review, we first introduce the properties of organic- inorganic halide perovskites and then focus on the notable achievements made on the perovskite layer to improve the power conversion efficiency of solid-state perovskite solar cells, which is featured by process engineering of the state-of-the-art lead methylammoni- um triiodide perovskite and material control of lead triiodide perovskites and other newly emerged per- ovskites. In the end, we wish to provide an outlook of the future development in solid-state perovskite solar cells. Provided that the instability and toxicity of solid- state perovskite solar cells can be solved, we will wit- ness a new era for cost-effective and efficient solar cells.
近年来,有机-无机钙钛矿太阳能电池得到了迅猛的发展,其光电转化效率从2009年的3.8%提高至2014年底的20%左右.本文首先介绍了有机-无机钙钛矿材料的光学和电学特性,以及钙钛矿电池的结构和组成.随后,重点列举了一些制备有机-无机钙钛矿层的新颖、简洁、有效的方法,以及这些制备方法对钙钛矿层的形貌和电池性能产生的影响.此外,总结了对钙钛矿材料本身的修饰,包括对有机官能团的调控和对卤素的选择,及其对晶体结构和电池工作情况的影响.同时,归纳了几种无铅钙钛矿在用作太阳能电池中的吸光剂时的优劣性.最后,我们探讨了提高钙钛矿电池的光电转化效率的方向,以及提高其稳定性的解决方法.
基金
supported by the Australian Research Council (ARC) through Discovery Project programs
