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甲基胺溴化铅晶体粉末的温度依赖光致发光

于海龙 吴文智

于海龙, 吴文智. 甲基胺溴化铅晶体粉末的温度依赖光致发光[J]. 强激光与粒子束, 2023, 35: 119001. doi: 10.11884/HPLPB202335.230103
引用本文: 于海龙, 吴文智. 甲基胺溴化铅晶体粉末的温度依赖光致发光[J]. 强激光与粒子束, 2023, 35: 119001. doi: 10.11884/HPLPB202335.230103
Yu Hailong, Wu Wenzhi. Temperature-dependent photoluminescence of CH3NH3PbBr3 crystal powder[J]. High Power Laser and Particle Beams, 2023, 35: 119001. doi: 10.11884/HPLPB202335.230103
Citation: Yu Hailong, Wu Wenzhi. Temperature-dependent photoluminescence of CH3NH3PbBr3 crystal powder[J]. High Power Laser and Particle Beams, 2023, 35: 119001. doi: 10.11884/HPLPB202335.230103

甲基胺溴化铅晶体粉末的温度依赖光致发光

doi: 10.11884/HPLPB202335.230103
基金项目: 黑龙江省留学归国人员基金项目(LC2017030)
详细信息
    作者简介:

    于海龙,1097913777@qq.com

    通讯作者:

    吴文智,wuwenzhi@hlju.edu.cn

  • 中图分类号: O472+.3

Temperature-dependent photoluminescence of CH3NH3PbBr3 crystal powder

  • 摘要: 采用稳态光致发光(PL)光谱技术,结合光谱学分析方法,对CH3NH3PbBr3(MAPbBr3)晶体粉末的功率密度和温度相关的光物理特性进行了研究。在405 nm连续激光激发下,PL发射峰位在560 nm,半高全宽为123 meV。光谱实验结果表明,通过对功率密度与PL强度进行拟合,其斜率为1.10,这很好地证明了单光子吸收的存在。在80~310 K温度范围内,MAPbBr3晶体粉末的荧光峰位表现出不同的温度依赖行为。随着温度的升高,激子-声子相互作用的增强,峰宽均匀展宽,积分强度逐渐减小。PL发射峰位在80~145 K出现蓝移。在150 K附近PL发射峰出现跳跃,而当温度超过150 K时,光谱的峰位几乎保持不变。这些温度相关的PL行为主要是由于在150 K左右发生了从正交相到四方相的结构相变。此外,从温度相关的PL实验数据拟合得到激子结合能约为49.8 meV和纵向光学声子能量约为60.4 meV。
  • 图  1  形貌、光学及结构表征

    Figure  1.  Morphology, optical and structural characterization

    图  2  功率依赖的稳态光致发光光谱

    Figure  2.  Power-dependent steady-state PL spectra

    图  3  温度依赖的稳态光致发光光谱

    Figure  3.  Temperature-dependent steady-state PL spectra

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出版历程
  • 收稿日期:  2023-04-25
  • 修回日期:  2023-10-17
  • 录用日期:  2023-10-17
  • 网络出版日期:  2023-10-21
  • 刊出日期:  2023-11-11

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