Research progress on ultrafast dynamics of quasi-two-dimensional perovskite
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[1]江玉海,孙鹏云,崔明焕等.准二维钙钛矿超快动力学的研究进展[J].betway官方app 学报(自然科学版),2023,51(04):1-10.DOI:10.16366/j.cnki.1000-2367.2023.04.001.
摘要(Abstract):
基于三维有机-无机杂化钙钛矿光电转换材料制备的光电器件的环境稳定性较差,严重阻碍了其大规模商业应用,准二维钙钛矿有望解决这一问题.准二维钙钛矿打破了三维钙钛矿结构上的对称性,突破了容忍因子的限制.此外,材料的激子结合能较大,表现出较强的量子和介电限域效应,拥有特殊的载流子动力学和光物理特性.目前准二维钙钛矿光电转换器件的效率仍然与三维钙钛矿相差较大,因此必须对其内部的超快动力学和物理机制进行深入研究,为进一步优化器件性能提供指导.总结了准二维钙钛矿光电转换器件的研究进展,归纳了准二维钙钛矿的俄歇复合、能量转移和电荷转移等超快动力学特性,分析了准二维钙钛矿光电转换器件目前面临的问题并对其未来的研究趋势进行了展望.
The poor environmental stability of optoelectronic devices based on three-dimensional(3D)organic-inorganic hybrid perovskite materials seriously hinders their large-scale commercial applications. Quasi-2D perovskites breaks the limit of the tolerance factor by breaking the symmetry on the 3D perovskite structure, and has excellent environmental stability, promising to solve this problem. In addition, the material has a large exciton binding energy, exhibits strong quantum and dielectric confinement effects, and possesses special carrier dynamics and photophysical properties. At present, the efficiency of quasi-2D perovskite photoelectric conversion devices is far lower than that of 3D perovskites, so it is necessary to conduct in-depth research on the ultrafast dynamics and physical mechanisms to achieve further optimization of device performance. This article summarizes the research progress of quasi-2D perovskite photoelectric conversion devices and the ultrafast dynamics of quasi-2D perovskite such as Auger recombination, energy transfer and charge transfer. Then this paper analyzes the current problems of quasi-2D perovskite photoelectric conversion devices, and looks forward to their prospects. It is expected to provide a guidance for the research of quasi-2D perovskite photoelectric conversion devices.
关键词(KeyWords):准二维钙钛矿;俄歇复合;能量转移;电荷转移;超快动力学
quasi-2D perovskites;Auger recombination;energy transfer;charge transfer;ultrafast dynamics
基金项目(Foundation):国家自然科学基金(12074140)
作者(Authors):江玉海;孙鹏云;崔明焕;秦朝朝;
Jiang Yuhai;Sun Pengyun;Cui Minghuan;Qin Chaochao;School of Physics,Henan Normal University;School of Physical Science and Technology,Shanghai Tech University;College of Life Sciences,Henan Normal University;
DOI:10.16366/j.cnki.1000-2367.2023.04.001