Peng Hui, Zou Bingsuo
Guangxi Key Lab of Processing for Nonferrous Metals and Featured Materials and Key Lab of New Processing Technology for Nonferrous Metals and Materials, Ministry of Education; School of Resources, Environments and Materials; and School of Physics, Guangxi University, Nanning 530004, China.
Beijing Key Laboratory of Nanophotonics & Ultrafine Optoelectronic Systems, Beijing Institute of Technology, Beijing 100081, China.
J Phys Chem Lett. 2022 Feb 24;13(7):1752-1764. doi: 10.1021/acs.jpclett.1c03849. Epub 2022 Feb 15.
Low-dimensional metal halides (LDMHs), as a derivative of three-dimensional lead halide perovskites, have attracted much attention because of their unique crystal structures and fascinating photonic properties. The simple synthesis and rich photonic properties of LDMHs make them striking candidates for the development of lighting, photodetectors, biological imaging, . Although many novel LDMHs have been achieved with strong electron-phonon coupling related to their self-trapped excitons (STEs) and excellent optical responses, transition-metal halides or doped halides have not been covered in regard to their rich spin characteristics. In this Perspective, we aim to deeply understand the role of electron-phonon coupling and STEs with magnetic coupling effects in regulating the optical properties of LDMHs and try to provide a novel way or a series of novel systems for the realization of next-generation high-performance luminescent materials with spin-coupling-involved photonics. Finally, an outlook toward potential challenges and applications of such ionic semiconducting LDMHs is also presented.
低维金属卤化物（LDMHs）作为三维铅卤化物钙钛矿的衍生物，因其独特的晶体结构和迷人的光子特性而备受关注。LDMHs简单的合成方法和丰富的光子特性使其成为照明、光电探测器、生物成像等领域发展的引人注目的候选材料。尽管通过与自陷激子（STE）相关的强电子 - 声子耦合以及出色的光学响应已经实现了许多新型LDMHs，但过渡金属卤化物或掺杂卤化物丰富的自旋特性尚未得到研究。在这篇展望文章中，我们旨在深入理解电子 - 声子耦合和具有磁耦合效应的STE在调节LDMHs光学性质中的作用，并尝试为实现具有自旋耦合光子学的下一代高性能发光材料提供一种新方法或一系列新系统。最后，还对这种离子半导体LDMHs的潜在挑战和应用进行了展望。
