中国物理B ›› 2023, Vol. 32 ›› Issue (6): 67302-067302.doi: 10.1088/1674-1056/ac921b

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Exploring plasmons weakly coupling to perovskite excitons with tunable emission by energy transfer

Guo-Dong Yan(严国栋)1, Zhen-Hua Zhang(张振华)1, Heng Guo(郭衡)1, Jin-Ping Chen(陈金平)1, Qing-Song Jiang(蒋青松)2, Qian-Nan Cui(崔乾楠)1, Zeng-Liang Shi(石增良)1, and Chun-Xiang Xu(徐春祥)1,†   

  1. 1 State Key Laboratory of Bioelectronics, School of Physics, Southeast University, Nanjing 210096, China;
    2 Faculty of Electronic Information Engineering, Huaiyin Institute of Technology, Huaian 223001, China
  • 收稿日期:2022-07-11 修回日期:2022-08-15 接受日期:2022-09-15 出版日期:2023-05-17 发布日期:2023-06-12
  • 通讯作者: Chun-Xiang Xu E-mail:xcxseu@seu.edu.cn
  • 基金资助:
    Project supported by the National Key R&D Program of China (Grant Nos. 2017YFA0700503 and 2018YFA0209101) and the National Natural Science Foundation of China (Grant Nos. 61821002, 11734005, 62075041, and 61704024).

Exploring plasmons weakly coupling to perovskite excitons with tunable emission by energy transfer

Guo-Dong Yan(严国栋)1, Zhen-Hua Zhang(张振华)1, Heng Guo(郭衡)1, Jin-Ping Chen(陈金平)1, Qing-Song Jiang(蒋青松)2, Qian-Nan Cui(崔乾楠)1, Zeng-Liang Shi(石增良)1, and Chun-Xiang Xu(徐春祥)1,†   

  1. 1 State Key Laboratory of Bioelectronics, School of Physics, Southeast University, Nanjing 210096, China;
    2 Faculty of Electronic Information Engineering, Huaiyin Institute of Technology, Huaian 223001, China
  • Received:2022-07-11 Revised:2022-08-15 Accepted:2022-09-15 Online:2023-05-17 Published:2023-06-12
  • Contact: Chun-Xiang Xu E-mail:xcxseu@seu.edu.cn
  • Supported by:
    Project supported by the National Key R&D Program of China (Grant Nos. 2017YFA0700503 and 2018YFA0209101) and the National Natural Science Foundation of China (Grant Nos. 61821002, 11734005, 62075041, and 61704024).

摘要: Localized surface plasmon resonance (LSPR) has caused extensive concern and achieved widespread applications in optoelectronics. However, the weak coupling of plasmons and excitons in a nanometal/semiconductor system remains to be investigated via energy transfer. Herein, bandgap tunable perovskite films were synthesized to adjust the emission peaks, for further coupling with stable localized surface plasmons from gold nanoparticles. The degree of mismatch, using steady-state and transient photoluminescence (PL), was investigated systematically in two different cases of gold nanoparticles that were in direct contacting and insulated. The results demonstrated the process of tuning emission coupled to LSPR via wavelength-dependent photoluminescence intensity in the samples with an insulating spacer. In the direct contact case, the decreased radiative decay rate involves rapid plasmon resonance energy transfer to the perovskite semiconductor and non-radiative energy transfer to metal nanoparticles in the near-field range.

关键词: plasmons, photoluminescence, tunable emission, perovskite

Abstract: Localized surface plasmon resonance (LSPR) has caused extensive concern and achieved widespread applications in optoelectronics. However, the weak coupling of plasmons and excitons in a nanometal/semiconductor system remains to be investigated via energy transfer. Herein, bandgap tunable perovskite films were synthesized to adjust the emission peaks, for further coupling with stable localized surface plasmons from gold nanoparticles. The degree of mismatch, using steady-state and transient photoluminescence (PL), was investigated systematically in two different cases of gold nanoparticles that were in direct contacting and insulated. The results demonstrated the process of tuning emission coupled to LSPR via wavelength-dependent photoluminescence intensity in the samples with an insulating spacer. In the direct contact case, the decreased radiative decay rate involves rapid plasmon resonance energy transfer to the perovskite semiconductor and non-radiative energy transfer to metal nanoparticles in the near-field range.

Key words: plasmons, photoluminescence, tunable emission, perovskite

中图分类号:  (Collective excitations (including excitons, polarons, plasmons and other charge-density excitations))

  • 73.20.Mf
78.55.-m (Photoluminescence, properties and materials) 79.60.-i (Photoemission and photoelectron spectra)