Energy Versus Electron Transfer: Managing Excited-State Interactions in Perovskite Nanocrystal–Molecular Hybrids,Chemical Reviews

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Energy Versus Electron Transfer: Managing Excited-State Interactions in Perovskite Nanocrystal–Molecular Hybrids
Chemical Reviews ( IF 51.4 ) Pub Date : 2022-07-06 , DOI: 10.1021/acs.chemrev.2c00172
Jeffrey T DuBose _{1,

2} , Prashant V Kamat _{1,

2,

3}

Affiliation

Energy and electron transfer processes in light harvesting assemblies dictate the outcome of the overall light energy conversion process. Halide perovskite nanocrystals such as CsPbBr₃ with relatively high emission yield and strong light absorption can transfer singlet and triplet energy to surface-bound acceptor molecules. They can also induce photocatalytic reduction and oxidation by selectively transferring electrons and holes across the nanocrystal interface. This perspective discusses key factors dictating these excited-state pathways in perovskite nanocrystals and the fundamental differences between energy and electron transfer processes. Spectroscopic methods to decipher between these complex photoinduced pathways are presented. A basic understanding of the fundamental differences between the two excited deactivation processes (charge and energy transfer) and ways to modulate them should enable design of more efficient light harvesting assemblies with semiconductor and molecular systems.

中文翻译：

能量与电子转移：管理钙钛矿纳米晶体-分子杂化物中的激发态相互作用

光收集组件中的能量和电子转移过程决定了整个光能转换过程的结果。卤化物钙钛矿纳米晶体，例如 CsPbBr ₃具有相对较高的发射产率和较强的光吸收，可以将单重态和三重态能量转移到表面结合的受体分子上。它们还可以通过在纳米晶体界面上选择性地转移电子和空穴来诱导光催化还原和氧化。该观点讨论了决定钙钛矿纳米晶体中这些激发态途径的关键因素以及能量和电子转移过程之间的根本差异。介绍了破译这些复杂的光诱导途径之间的光谱方法。对两种激发的失活过程（电荷和能量转移）之间的根本差异以及调制它们的方法有基本的了解，应该能够设计出更有效的具有半导体和分子系统的光收集组件。

更新日期：2022-07-06

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