材料科学
光致发光
光电子学
带隙
激光器
超短脉冲
纳米晶
钙钛矿(结构)
卤化物
热稳定性
纳米技术
化学工程
光学
化学
无机化学
物理
工程类
作者
Xinkuo Li,Ke Sun,Jiajia Wu,Yi Liu,Linhan Li,Zhu Xiao,Zhou Li,Xiaofeng Liu,Beibei Xu,Jianrong Qiu,Dezhi Tan
标识
DOI:10.1002/lpor.202301244
摘要
Abstract Flexible regulation of bandgap of perovskite nanocrystals (PNCs) is fundamentally critical for desirable optoelectronic functions and applications. Here, regulating chemical composition and emission wavelength of PNCs in glass by a simple heat‐treatment process are reported, which is established to rely on the thermal‐trigger phase separation and ion exchange. The first principle calculations are overall performed to reveal the mechanism of bandgap engineering and optimization of emission performance. The PNCs exhibit excellent stability against thermal, ultraviolet irradiation, and organic molecules. The bandgap of PNCs in the heat‐treated glass can also be re‐modulated by ultrafast laser irradiation. Ultrafast laser direct writing of multi‐color patterns and holographic dynamic displays are achieved, which hold great potential in the application of encryption‐decryption and emissive devices.
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