Localized Field and Recombination Rate Enhancement of Excitons in CsPbBr3 Optical Waveguide
Synthesis and Properties of Materials|更新时间:2021-02-08
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Localized Field and Recombination Rate Enhancement of Excitons in CsPbBr3 Optical Waveguide
Chinese Journal of LuminescenceVol. 42, Issue 2, Pages: 195-200(2021)
作者机构:
中国科学院长春光学精密机械与物理研究所 发光学及应用国家重点实验室, 吉林 长春 130033
作者简介:
基金信息:
National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China;National Natural Science Foundation of China
CHUN-XU LIU, JI-SEN ZHANG, YONG-YI CHEN, et al. Localized Field and Recombination Rate Enhancement of Excitons in CsPbBr3 Optical Waveguide. [J]. Chinese journal of luminescence, 2021, 42(2): 195-200.
DOI:
CHUN-XU LIU, JI-SEN ZHANG, YONG-YI CHEN, et al. Localized Field and Recombination Rate Enhancement of Excitons in CsPbBr3 Optical Waveguide. [J]. Chinese journal of luminescence, 2021, 42(2): 195-200. DOI: 10.37188/CJL.20200375.
Localized Field and Recombination Rate Enhancement of Excitons in CsPbBr3 Optical Waveguide
films have been integrated into a plane waveguides to explore the optical physical mechanism and new application of plasmon structure. It is shown that the localized field on the Ag/perovskite CsPbBr
3
interface has been increased giving rise to PL and radiative ratio(
Γ
=
τ
-1
) enhancement of CsPbBr
3
excitons as varying system structures
especially modifying the thickness of PMMA. Decay curves have been fitted by both two exponential and ensemble stretched functions
respectively. It is found that there is big fitting discrepancy. Without considering the localized field enhancement on the Ag/CsPbBr
3
interface
the fit results(
τ
avg
30~25 ns) by two exponential form are similar to the results in free space reported previously. The PL lifetime shortening(
τ
avg
12~9 ns)
or radiative rate increasing have been found by the latter fitting. The above-mentioned investigations can provide the basis for optical physical fundamental research and design and developing of surface plasmon polaritons(SPPs) luminescence-display devices.
关键词
钙钛矿CsPbBr3表面等离子体光波导局域场增强
Keywords
perovskite CsPbBr3surface plasmonoptical waveguideenhancement of localized field
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