光致发光
兴奋剂
材料科学
高压
工程物理
光电子学
凝聚态物理
物理
作者
Zan Dou,Zhihua Lin,Rong Wang,Mengmeng Han,Jianxu Ding,Haoyu Wang,Xiaoguang Luo,Yingchun Cheng,Nannan Han
摘要
CsCu2I3 is a popular lead-free metal halide perovskite with good thermal and air stability. To facilitate its applications in optoelectronics, Ag doping and high pressure are employed in this work to improve the optoelectronic properties of CsCu2I3. Using first-principles calculations and experiments, the structural phase change of 10% Ag-doped CsCu2I3 is found to occur at about 4.0 GPa. This reveals the regulation of band structures by hydrostatic pressure. In addition, the high pressure not only increases the emission energy of photoluminescence of 10% Ag-doped CsCu2I3 by more than 0.2 eV, but also increases the emission intensity by multiple times. Finally, the origin of luminescence in 10% Ag-doped CsCu2I3 is attributed to the I vacancies. This work provides insight into the structure and optoelectronic properties of 10% Ag-doped CsCu2I3, and offers significant guidance for the design and manufacturing of future luminescence devices.
科研通智能强力驱动
Strongly Powered by AbleSci AI