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Advancing Tin Halide Perovskites: Strategies toward the ASnX3 Paradigm for Efficient and Durable Optoelectronics
ACS Energy Letters ( IF 22.0 ) Pub Date : 2020-05-18 , DOI: 10.1021/acsenergylett.0c00577
Yajie Yan 1 , Tõnu Pullerits 2 , Kaibo Zheng 2, 3 , Ziqi Liang 1
Affiliation  

Various less-toxic substitutes for the Pb2+-based perovskites have been proposed, of which Sn2+-based metal halide perovskites (namely, Sn-PVSKs) hold the best prospects because of their optoelectronic properties comparable to those of the Pb analogues. Nevertheless, the intrinsic instability and unfavorable crystallization of Sn-PVSKs place restrictions on both the device performance/durability and the fabrication reproducibility/large-scale manufacturing, respectively. Therefore, numerous attempts have been directed at exploring the underlying mechanisms of Sn-PVSKs and acquiring high-quality, ambient-stable thin films. In this work, an overview is first given on the milestones and general properties of the paradigm ABX3-structured Sn-PVSKs. Then, their electronic structure evolution, photophysics process, and degradation pathways are thoroughly interpreted. The gained understanding triggers various strategies exploited in the categories of synthetic conditions, compositions, phase components, and device architecture for diverse optoelectronic applications. The final section summarizes key advances in Sn-PVSKs and offers guidance for future improvements that depend critically on these methodologies.

中文翻译:

推进卤化锡钙钛矿的发展:针对高效耐用的ASnX 3范例的战略

已经提出了各种毒性较小的基于Pb 2+的钙钛矿替代物,其中基于Sn 2+的金属卤化物钙钛矿(即Sn-PVSKs)由于其光电性能可与Pb类似物相比而具有最佳的前景。 。然而,Sn-PVSK的固有不稳定性和不利的结晶分别限制了器件性能/耐用性和制造再现性/大规模制造。因此,已经进行了许多尝试来探索Sn-PVSK的潜在机理并获得高质量,环境稳定的薄膜。在本文中,首先概述了范式ABX 3的里程碑和一般属性。结构的Sn-PVSK。然后,对它们的电子结构演变,光物理过程和降解途径进行了彻底的解释。所获得的理解触发了在用于各种光电应用的合成条件,成分,相成分和器件架构等类别中开发的各种策略。最后一部分总结了Sn-PVSK的关键进展,并为未来的改进提供了指导,这些改进主要取决于这些方法。
更新日期:2020-05-18
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