Na掺杂CsCuCl3单晶的制备及其光学性能研究
Preparation and Optical Properties of Na-Doped CsCuCl3 Single Crystals
摘要: CsCuCl3钙钛矿以其环境友好、稳定性高等特点备受科研工作者的关注，但由于其强激子–声子耦合诱导的本征自陷和表面缺陷主要控制电荷载流子的陷获过程，大大降低了它的光致发光量子效率，以致无法检测到光致发光信号，限制了对其光学性能的研究。为解决这个问题，本文在制备样品的过程中，引入Na元素来钝化内部和表面缺陷，采用降温结晶法成功制备了Na掺杂的CsCuCl3单晶，并对晶体结构、发光及光热性能和环境稳定性进行表征，这为设计具有良好光学性能的无铅钙钛矿光电器件提供了参考。
Abstract: CsCuCl3 perovskite has attracted much attention due to its environmental friendliness and high stability. However, since the trapping process of charge carriers is mainly controlled by intrinsic traps and surface defects induced by strong exciton-phonon coupling and thus the photolumines-cence quantum efficiency are greatly reduced, the photoluminescence signal cannot be detected and the research on its optical properties is limited. To solve this problem, Na element was intro-duced to passivate internal and surface defects during the sample preparation process. The Na doped CsCuCl3 single crystal was successfully prepared by cooling crystallization method, with the crystal structure, luminescence, photothermal performance and environmental stability being characterized. This work provides a reference for the design of lead-free perovskite optoelectronic devices with good optical properties.
文章引用：汪慧, 李荣, 夏悦, 戢威, 雷丙龙, K. P.Homewood, 高云. Na掺杂CsCuCl3单晶的制备及其光学性能研究[J]. 材料科学, 2021, 11(2): 126-134. https://doi.org/10.12677/MS.2021.112017

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