纳米复合材料
纳米晶
超短脉冲
材料科学
聚合物
基质(化学分析)
纳米技术
聚合物纳米复合材料
光电子学
复合材料
物理
光学
激光器
作者
Andrea Erroi,Francesco Carulli,Francesca Cova,Isabel Frank,Isabel Frank,Matteo L. Zaffalon,Jordi Llusar,Sara Mecca,Alessia Cemmi,Ilaria Di Sarcina,Francesca Rossi,Luca Beverina,Francesco Meinardi,Ivan Infante,Ivan Infante,E. Auffray,Sergio Brovelli
出处
期刊:ACS energy letters
[American Chemical Society]
日期:2024-04-23
卷期号:: 2333-2342
标识
DOI:10.1021/acsenergylett.4c00778
摘要
Lead halide perovskite nanocrystals (LHP-NCs) embedded in polymer matrices are gaining traction as next-generation radiation detectors. While progress has been made on green-emitting CsPbBr3 NCs, scant attention has been given to the scintillation properties of CsPbCl3 NCs, which emit size-tunable UV-blue light matching the peak efficiency of ultrafast photodetectors. In this study, we explore the scintillation characteristics of CsPbCl3 NCs produced through a scalable method and treated with CdCl2. Spectroscopic, radiometric, and theoretical analyses on both untreated and treated NCs uncover deep hole trap states due to surface undercoordinated chloride ions, eliminated by Pb to Cd substitution. This yields near-perfect efficiency and resistance to polyacrylate mass polymerization. Radiation hardness tests demonstrate stability to high γ doses, while time-resolved experiments reveal ultrafast radioluminescence with an average lifetime as short as 210 ps. These findings enhance our comprehension of LHP NCs' scintillation properties, positioning CsPbCl3 as a promising alternative to conventional fast scintillators.
科研通智能强力驱动
Strongly Powered by AbleSci AI