华东师范大学学报（自然科学版） ›› 2026, Vol. 2026 ›› Issue (4): 13-20.doi: 10.3969/j.issn.1000-5641.2026.04.002

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CsPbBr3亚微米球状微腔的偏振荧光动力学研究

孙薇, 谢微*()   

  1. 华东师范大学 精密光谱科学与技术国家重点实验室, 上海　200241
  • 收稿日期:2025-01-07 出版日期:2026-07-25 发布日期:2026-07-18
  • 通讯作者: 谢微 E-mail:wxie@phy.ecnu.edu.cn
  • 基金资助:
    国家自然科学基金 (12474070, 12174112)

Polarization dynamics of photoluminescence from CsPbBr3 submicron spherical microcavities

Wei SUN, Wei XIE*()   

  1. State Key Laboratory of Precision Spectroscopy, East China Normal University, Shanghai　200241, China
  • Received:2025-01-07 Online:2026-07-25 Published:2026-07-18
  • Contact: Wei XIE E-mail:wxie@phy.ecnu.edu.cn

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摘要：

全无机钙钛矿材料CsPbBr3因其卓越的光电特性, 已成为光电领域研究的焦点之一. 本研究聚焦于CsPbBr3亚微米球腔结构, 揭示了光场与物质在微观尺度的相互作用特性. 通过分析该结构在不同激发功率条件下的荧光辐射光谱、辐射寿命及光场偏振度演化规律, 发现CsPbBr3微球腔能够在激发阈值以上实现高圆偏振度激射, 并采用时间分辨光谱技术深入分析了CsPbBr3亚微米球在辐射过程中的偏振时间动力学演化特性, 在激射峰处观察到了高达0.65的圆偏振度. 这些结果为基于手性量子光学的新型光电器件设计与开发奠定了基础.

关键词: CsPbBr3, 光致发光, 偏振动力学, 微纳激光, 圆偏振光

Abstract:

CsPbBr3, an all-inorganic perovskite, has emerged as a popular material in the photoelectric field because of its excellent photoelectric characteristics. This study focuses on the CsPbBr3 structure, containing submicron spherical cavities, revealing the microscale interactions between photons and excitons. By analyzing the photoluminescence spectra, radiation lifetime, and polarization evolution law at different excitation powers, it was discovered that the CsPbBr3 microsphere cavity achieved high circular polarization lasing above the lasing threshold. Time-resolved spectroscopy was used to analyze the temporal polarization characteristics of CsPbBr3 submicron spheres in detail during the radiation process, and the lasing peak exhibits a degree of circular polarization as high as 0.65. These results provided a foundation for the design and development of new photoelectric devices using chiral quantum optics.

Key words: CsPbBr3, photoluminescence, polarization dynamics, micro-nano laser, circularly polarized light

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