Temperature-dependent surface plasmon enhanced photoluminescence in CsPbBr3 thin film

Liwei Sun; Xiaoqiang Li; Lei Song; Wei Wang; Jun Dai

doi:10.1016/j.physleta.2021.127795

Temperature-dependent surface plasmon enhanced photoluminescence in CsPbBr₃ thin film

Liwei Sun, Xiaoqiang Li, Lei Song, Wei Wang, Jun Dai^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

9 Citations (Scopus)

Abstract

In this paper, we report CsPbBr₃/SiO₂/Ag hybrid thin films structure to realize the metal surface plasmon enhanced photoluminescence. The photoluminescence of CsPbBr₃ can be enhanced when the CsPbBr₃ excitons interact with surface plasmon from Ag thin film. The numerical simulation demonstrates the localized electric field induced by surface plasmon is the strongest when SiO₂ interlayer has the thickness of 5 nm. If taking account of the energy transfer from CsPbBr₃ excitons to Ag layer, the experimental maximum photoluminescence enhancement factor actually occurs when the SiO₂ thin film has a thickness of 20 nm. The temperature-dependent photoluminescence demonstrates that metal surface plasmon enhanced photoluminescence has higher enhancement factor at lower temperature, which is attributed to the stronger surface plasmon coupling efficiency at low temperature. The time-resolved photoluminescence further proves that the surface plasmon coupling can enhance the spontaneous emission rate at low temperature.

Original language	English
Article number	127795
Journal	Physics Letters A
Volume	422
Early online date	28 Oct 2021
DOIs	https://doi.org/10.1016/j.physleta.2021.127795
Publication status	Published - 17 Jan 2022

Keywords

Perovskite
Photoluminescence
Surface plasmon

ASJC Scopus subject areas

General Physics and Astronomy

Access to Document

10.1016/j.physleta.2021.127795

Cite this

@article{fc12f14f0c0a409d8439239ade946a67,

title = "Temperature-dependent surface plasmon enhanced photoluminescence in CsPbBr3 thin film",

abstract = "In this paper, we report CsPbBr3/SiO2/Ag hybrid thin films structure to realize the metal surface plasmon enhanced photoluminescence. The photoluminescence of CsPbBr3 can be enhanced when the CsPbBr3 excitons interact with surface plasmon from Ag thin film. The numerical simulation demonstrates the localized electric field induced by surface plasmon is the strongest when SiO2 interlayer has the thickness of 5 nm. If taking account of the energy transfer from CsPbBr3 excitons to Ag layer, the experimental maximum photoluminescence enhancement factor actually occurs when the SiO2 thin film has a thickness of 20 nm. The temperature-dependent photoluminescence demonstrates that metal surface plasmon enhanced photoluminescence has higher enhancement factor at lower temperature, which is attributed to the stronger surface plasmon coupling efficiency at low temperature. The time-resolved photoluminescence further proves that the surface plasmon coupling can enhance the spontaneous emission rate at low temperature.",

keywords = "Perovskite, Photoluminescence, Surface plasmon",

author = "Liwei Sun and Xiaoqiang Li and Lei Song and Wei Wang and Jun Dai",

note = "Funding Information: This work is supported by National Natural Science Foundation of China ( 11874185 ), Postgraduate Research & Practice Innovation Program of Jiangsu Province ( KYCX20_3110 ). Publisher Copyright: {\textcopyright} 2021 Elsevier B.V.",

year = "2022",

month = jan,

day = "17",

doi = "10.1016/j.physleta.2021.127795",

language = "English",

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journal = "Physics Letters A",

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T1 - Temperature-dependent surface plasmon enhanced photoluminescence in CsPbBr3 thin film

AU - Sun, Liwei

AU - Li, Xiaoqiang

AU - Song, Lei

AU - Wang, Wei

AU - Dai, Jun

N1 - Funding Information: This work is supported by National Natural Science Foundation of China ( 11874185 ), Postgraduate Research & Practice Innovation Program of Jiangsu Province ( KYCX20_3110 ). Publisher Copyright: © 2021 Elsevier B.V.

PY - 2022/1/17

Y1 - 2022/1/17

N2 - In this paper, we report CsPbBr3/SiO2/Ag hybrid thin films structure to realize the metal surface plasmon enhanced photoluminescence. The photoluminescence of CsPbBr3 can be enhanced when the CsPbBr3 excitons interact with surface plasmon from Ag thin film. The numerical simulation demonstrates the localized electric field induced by surface plasmon is the strongest when SiO2 interlayer has the thickness of 5 nm. If taking account of the energy transfer from CsPbBr3 excitons to Ag layer, the experimental maximum photoluminescence enhancement factor actually occurs when the SiO2 thin film has a thickness of 20 nm. The temperature-dependent photoluminescence demonstrates that metal surface plasmon enhanced photoluminescence has higher enhancement factor at lower temperature, which is attributed to the stronger surface plasmon coupling efficiency at low temperature. The time-resolved photoluminescence further proves that the surface plasmon coupling can enhance the spontaneous emission rate at low temperature.

AB - In this paper, we report CsPbBr3/SiO2/Ag hybrid thin films structure to realize the metal surface plasmon enhanced photoluminescence. The photoluminescence of CsPbBr3 can be enhanced when the CsPbBr3 excitons interact with surface plasmon from Ag thin film. The numerical simulation demonstrates the localized electric field induced by surface plasmon is the strongest when SiO2 interlayer has the thickness of 5 nm. If taking account of the energy transfer from CsPbBr3 excitons to Ag layer, the experimental maximum photoluminescence enhancement factor actually occurs when the SiO2 thin film has a thickness of 20 nm. The temperature-dependent photoluminescence demonstrates that metal surface plasmon enhanced photoluminescence has higher enhancement factor at lower temperature, which is attributed to the stronger surface plasmon coupling efficiency at low temperature. The time-resolved photoluminescence further proves that the surface plasmon coupling can enhance the spontaneous emission rate at low temperature.

KW - Perovskite

KW - Photoluminescence

KW - Surface plasmon

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