论文标题
评论“在甲米尼混合锡型三碘二碘化物钙钛矿中结构和光电特性的相互作用”
Comment on "Interplay of Structural and Optoelectronic Properties in Formamidinium Mixed Tin-Lead Triiodide Perovskites"
论文作者
论文摘要
在FAPB $ _ {1-x}中研究光电属性，$ sn $ _x $ i $ _3 $ perovskites作为铅的函数：TIN Content，Parrott等。观察到最广泛的发光线宽和最大的发光stokes在混合成分中的变化，SN $ <25 $％，$> 0.85 $％。由于预计50:50组成的合金障碍作用最大，因此得出的结论是，可能在进一步的晶体生长优化后可以消除的外部因素可能引起的疾病效应。该评论表明，合金障碍对FAPB $ _ {1-x} $ sn $ _x $ i $ _3 $ perovskite中完全随机波动的最大效果实际上是$ x <0.25 $，对于$ x>> 0.85 $。因此，进一步的晶体生长优化是徒劳的。
Studying optoelectronic properties in FAPb$_{1-x}$Sn$_x$I$_3$ perovskites as a function of the lead:tin content, Parrott et al. observed the broadest luminescence linewidth and the largest luminescence Stokes shift in mixed compositions with Sn $ < 25$% and with $> 0.85$%. Since the largest effects of alloy disorder were expected for the 50:50 composition, it was concluded that the revealed disorder effects might arise from extrinsic factors that can be eliminated upon further crystal growth optimization. This comment shows that the largest effects of alloy disorder for perfectly random fluctuations in FAPb$_{1-x}$Sn$_x$I$_3$ perovskite are, in fact, expected for $x < 0.25$ and for $x > 0.85$. Therefore, further crystal growth optimization is futile.
