Efficient luminescence from CsPbBr3 nanoparticles embedded in Cs4PbBr6

Zhen Bao; Yu Jui Tseng; Wenwu You; Wei Zheng; Xueyuan Chen; Sebastian Mahlik; Agata Lazarowska; Tadeusz Lesniewski; Marek Grinberg; Chonggeng Ma; Weihao Sun; Wuzong Zhou; Ru Shi Liu; J. Paul Attfield

doi:10.1021/acs.jpclett.0c02321

Efficient luminescence from CsPbBr₃ nanoparticles embedded in Cs₄PbBr₆

Zhen Bao, Yu Jui Tseng, Wenwu You, Wei Zheng, Xueyuan Chen, Sebastian Mahlik, Agata Lazarowska, Tadeusz Lesniewski, Marek Grinberg, Chonggeng Ma, Weihao Sun, Wuzong Zhou, Ru Shi Liu, J. Paul Attfield

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

Abstract

Cs₄PbBr₆ is regarded as an outstanding luminescent material with good thermal stability and optical performance. However, the mechanism of green emission from Cs₄PbBr₆ has been controversial. Here we show that isolated CsPbBr3 nanoparticles embedded within a Cs₄PbBr₆ matrix give rise to a “normal” green luminescence while superfluorescence at longer wavelengths is suppressed. High-resolution transmission electron microscopy shows that the embedded CsPbBr₃ nanoparticles are around 3.8 nm in diameter and are well-separated from each other, perhaps by a strain-driven mechanism. This mechanism may enable other efficient luminescent composites to be developed by embedding optically active nanoparticles epitaxially within inert host lattices.

Original language	English
Pages (from-to)	7637-7642
Number of pages	6
Journal	Journal of Physical Chemistry Letters
Volume	11
Issue number	18
Early online date	21 Aug 2020
DOIs	https://doi.org/10.1021/acs.jpclett.0c02321
Publication status	Published - 17 Sept 2020

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10.1021/acs.jpclett.0c02321

Bao_2020_JPCL_efficientluminescence_AAM
Copyright © 2020 American Chemical Society. This work has been made available online in accordance with publisher policies or with permission. Permission for further reuse of this content should be sought from the publisher or the rights holder. This is the author created accepted manuscript following peer review and may differ slightly from the final published version. The final published version of this work is available at https://doi.org/10.1021/acs.jpclett.0c02321
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title = "Efficient luminescence from CsPbBr3 nanoparticles embedded in Cs4PbBr6",

abstract = "Cs4PbBr6 is regarded as an outstanding luminescent material with good thermal stability and optical performance. However, the mechanism of green emission from Cs4PbBr6 has been controversial. Here we show that isolated CsPbBr3 nanoparticles embedded within a Cs4PbBr6 matrix give rise to a “normal” green luminescence while superfluorescence at longer wavelengths is suppressed. High-resolution transmission electron microscopy shows that the embedded CsPbBr3 nanoparticles are around 3.8 nm in diameter and are well-separated from each other, perhaps by a strain-driven mechanism. This mechanism may enable other efficient luminescent composites to be developed by embedding optically active nanoparticles epitaxially within inert host lattices.",

author = "Zhen Bao and Tseng, {Yu Jui} and Wenwu You and Wei Zheng and Xueyuan Chen and Sebastian Mahlik and Agata Lazarowska and Tadeusz Lesniewski and Marek Grinberg and Chonggeng Ma and Weihao Sun and Wuzong Zhou and Liu, {Ru Shi} and Attfield, {J. Paul}",

note = "This work was financially supported by the “Advanced Research Center of Green Materials Science and Technology” from The Featured Area Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (107L9006) and the Ministry of Science and Technology in Taiwan (MOST 107-2113-M-002-008-MY3, MOST 107-2923-M-002-004-MY3, and MOST 107-3017-F-002-001), the National Centre for Research and Development Poland Grant (No. PL-TW/V/1/2018), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB20000000), the CAS/SAFEA International Partnership Program for Creative Research Teams, and the NSFC (Nos. U1805252 and 11774345). J.P.A. acknowledges financial support from EPSRC, U.K.",

year = "2020",

month = sep,

day = "17",

doi = "10.1021/acs.jpclett.0c02321",

language = "English",

volume = "11",

pages = "7637--7642",

journal = "Journal of Physical Chemistry Letters",

issn = "1948-7185",

publisher = "American Chemical Society (ACS)",

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T1 - Efficient luminescence from CsPbBr3 nanoparticles embedded in Cs4PbBr6

AU - Bao, Zhen

AU - Tseng, Yu Jui

AU - You, Wenwu

AU - Zheng, Wei

AU - Chen, Xueyuan

AU - Mahlik, Sebastian

AU - Lazarowska, Agata

AU - Lesniewski, Tadeusz

AU - Grinberg, Marek

AU - Ma, Chonggeng

AU - Sun, Weihao

AU - Zhou, Wuzong

AU - Liu, Ru Shi

AU - Attfield, J. Paul

N1 - This work was financially supported by the “Advanced Research Center of Green Materials Science and Technology” from The Featured Area Research Center Program within the framework of the Higher Education Sprout Project by the Ministry of Education (107L9006) and the Ministry of Science and Technology in Taiwan (MOST 107-2113-M-002-008-MY3, MOST 107-2923-M-002-004-MY3, and MOST 107-3017-F-002-001), the National Centre for Research and Development Poland Grant (No. PL-TW/V/1/2018), the Strategic Priority Research Program of the Chinese Academy of Sciences (XDB20000000), the CAS/SAFEA International Partnership Program for Creative Research Teams, and the NSFC (Nos. U1805252 and 11774345). J.P.A. acknowledges financial support from EPSRC, U.K.

PY - 2020/9/17

Y1 - 2020/9/17

N2 - Cs4PbBr6 is regarded as an outstanding luminescent material with good thermal stability and optical performance. However, the mechanism of green emission from Cs4PbBr6 has been controversial. Here we show that isolated CsPbBr3 nanoparticles embedded within a Cs4PbBr6 matrix give rise to a “normal” green luminescence while superfluorescence at longer wavelengths is suppressed. High-resolution transmission electron microscopy shows that the embedded CsPbBr3 nanoparticles are around 3.8 nm in diameter and are well-separated from each other, perhaps by a strain-driven mechanism. This mechanism may enable other efficient luminescent composites to be developed by embedding optically active nanoparticles epitaxially within inert host lattices.

AB - Cs4PbBr6 is regarded as an outstanding luminescent material with good thermal stability and optical performance. However, the mechanism of green emission from Cs4PbBr6 has been controversial. Here we show that isolated CsPbBr3 nanoparticles embedded within a Cs4PbBr6 matrix give rise to a “normal” green luminescence while superfluorescence at longer wavelengths is suppressed. High-resolution transmission electron microscopy shows that the embedded CsPbBr3 nanoparticles are around 3.8 nm in diameter and are well-separated from each other, perhaps by a strain-driven mechanism. This mechanism may enable other efficient luminescent composites to be developed by embedding optically active nanoparticles epitaxially within inert host lattices.

UR - https://pubs.acs.org/doi/10.1021/acs.jpclett.0c02321#notes1

U2 - 10.1021/acs.jpclett.0c02321

DO - 10.1021/acs.jpclett.0c02321

M3 - Article

C2 - 32822189

AN - SCOPUS:85091191689

SN - 1948-7185

VL - 11

SP - 7637

EP - 7642

JO - Journal of Physical Chemistry Letters

JF - Journal of Physical Chemistry Letters

IS - 18

ER -

Efficient luminescence from CsPbBr₃ nanoparticles embedded in Cs₄PbBr₆

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