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Relationship between perovsktie solar cell efficiency and lattice disordering
Japanese Journal of Applied Physics ( IF 1.5 ) Pub Date : 2021-02-16 , DOI: 10.35848/1347-4065/abe276
Daisuke Hirotani 1 , Kohei Nishimura 2 , Kengo Hamada 1 , Muhammad Akmal Kamarudin 2 , Satoshi Iikubo 1 , Qing Shen 3 , Taro Toyoda 3 , Shuzi Hayase 2
Affiliation  

Multi-cations lead perovskite solar cells have shown higher performance than single-cation perovskite solar cells. This compositional engineering of perovskite material retains the optimum tolerance factor while allowing the tuning of the band gap in addition to the enhanced stability of cubic phase perovskite. However, no in-depth explanation has been provided on the relationship between crystal structure of the perovskite and the solar cell efficiency. In this report, we investigate the effect of lattice disordering of FA x MA1−x PbI3 perovskite on the tolerance factor and solar cell efficiency. The lattice disordering estimated using Williamson–Hall plot of XRD analysis revealed that the disordering is lowest when x=0.2 and highest when x=1.0. Correspondingly, x=0.2 showed the highest solar cell performance and long carrier lifetime Our results show that the disordering in α phase of FA x MA1−x PbI3 layer causes lattice deformation which affects the carrier lifetime and solar cell efficiency, instead of the defects on constituent elements.



中文翻译:

Perovsktie太阳能电池效率与晶格无序之间的关系

多阳离子铅钙钛矿太阳能电池已显示出比单阳离子钙钛矿太阳能电池更高的性能。钙钛矿材料的这种组成工程保留了最佳的公差系数,同时除了能提高立方相钙钛矿的稳定性外,还可以调节带隙。但是,没有对钙钛矿的晶体结构与太阳能电池效率之间的关系进行深入的说明。在本报告中,我们研究了FA x MA 1− x PbI 3钙钛矿的晶格无序对耐受因子和太阳能电池效率的影响。使用Williamson-Hall XRD分析图估计的晶格无序度表明,当x时,无序度最低。 = 0.2,当x = 1.0时最高。相应地,x = 0.2显示出最高的太阳能电池性能和较长的载流子寿命。我们的结果表明,FA x MA 1− x PbI 3层的α相无序会导致晶格变形,从而影响载流子寿命和太阳能电池效率,而不是组成元素上的缺陷。

更新日期:2021-02-16
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