Photocorrosion at Irradiated Perovskite/Electrolyte Interfaces.

Photocorrosion at Irradiated Perovskite/Electrolyte Interfaces.
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DOI:
10.1021/jacs.0c10348
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发表时间:
2020-12-30
影响因子:
15
通讯作者:
Janáky C
Janáky C
中科院分区:
化学1区
文献类型:
--
作者:
Samu GF;Janáky C

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在过去的十年中,金属卤化物钙钛矿改变了光电子学的研究和开发。最近,它们还在光催化和光电化学过程中站稳了脚跟,但它们对最常用溶剂和电解质的敏感性以及对光腐蚀的敏感性阻碍了此类应用。了解这些材料的光腐蚀的基本步骤可以帮助实现稳定的器件的奋进。在这个角度来看,我们讨论了热力学和动力学方面的光腐蚀过程发生在界面处的钙钛矿型光催化剂和光电极与不同的电解质。我们展示了如何结合在原位和operando电化学技术可以揭示潜在的机制。最后,我们还讨论了新兴的策略,以减轻光腐蚀(如表面保护,材料和电解质工程等)。
Metal–halide perovskites transformed optoelectronics research and development during the past decade. They have also gained a foothold in photocatalytic and photoelectrochemical processes recently, but their sensitivity to the most commonly applied solvents and electrolytes together with their susceptibility to photocorrosion hinders such applications. Understanding the elementary steps of photocorrosion of these materials can aid the endeavor of realizing stable devices. In this Perspective, we discuss both thermodynamic and kinetic aspects of photocorrosion processes occurring at the interface of perovskite photocatalysts and photoelectrodes with different electrolytes. We show how combined in situ and operando electrochemical techniques can reveal the underlying mechanisms. Finally, we also discuss emerging strategies to mitigate photocorrosion (such as surface protection, materials and electrolyte engineering, etc.).
DOI: 10.1016/0022-0728(91)85004-9
发表时间: 1991-11-12
影响因子: 4.5
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