Near-Infrared emission from tin–Lead (Sn–Pb) alloyed perovskite quantum dots by sodium doping

Feng Liu; Junke Jiang; Yaohong Zhang; Chao Ding; Taro Toyoda; Shuzi Hayase; Ruixiang Wang; Shuxia Tao; Qing Shen

doi:10.1002/anie.201916020

Near-Infrared emission from tin–Lead (Sn–Pb) alloyed perovskite quantum dots by sodium doping

Feng Liu
, Junke Jiang
, Yaohong Zhang
, Chao Ding
, Taro Toyoda
, Shuzi Hayase
, Ruixiang Wang
, Shuxia Tao (Corresponding author)
, Qing Shen (Corresponding author)

Computational Materials Physics

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

53 Citations (Scopus)

Abstract

Phase-stable CsSn_xPb_1−xI₃ perovskite quantum dots (QDs) hold great promise for optoelectronic applications owing to their strong response in the near-infrared region. Unfortunately, optimal utilization of their potential is limited by the severe photoluminescence (PL) quenching, leading to extremely low quantum yields (QYs) of approximately 0.3 %. The ultra-low sodium (Na) doping presented herein is found to be effective in improving PL QYs of these alloyed QDs without alerting their favourable electronic structure. X-ray photoelectron spectroscopy (XPS) studies suggest the formation of a stronger chemical interaction between I⁻ and Sn²⁺ ions upon Na doping, which potentially helps to stabilize Sn²⁺ and suppresses the formation of I vacancy defects. The optimized PL QY of the Na-doped QDs reaches up to around 28 %, almost two orders of magnitude enhancement compared with the pristine one.

Original language	English
Pages (from-to)	8421-8424
Number of pages	4
Journal	Angewandte Chemie - International Edition
Volume	59
Issue number	22
Early online date	20 Mar 2020
DOIs	https://doi.org/10.1002/anie.201916020
Publication status	Published - 25 May 2020

Funding

This research was supported by the Japan Science and Technology Agency (JST) Mirai program (JPMJMI17EA), the MEXT KAKENHI Grant (26286013, 17H02736), Beijing University of Civil Engineering and Architecture (UDC2018031121), JSPS International Research Fellow (Faculty of Informatics and Engineering, UEC). the Computational Sciences for Energy Research (CSER) tenure track program of Shell and NWO (15CST04‐2), the Netherlands.

Funders	Funder number
Shell
Japan Society for the Promotion of Science	17H02736
Ministerie van Volksgezondheid, Welzijn, en Sport	26286013
Japan Science and Technology Agency	JPMJMI17EA
Nederlandse Organisatie voor Wetenschappelijk Onderzoek	15CST04-2
Beijing University of Civil Engineering and Architecture	UDC2018031121

Keywords

doping
nanoparticles
near-infrared emission
perovskite quantum dots
tin–lead perovskites

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10.1002/anie.201916020

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@article{c904a5b2c08848d597662ab1c3b12035,

title = "Near-Infrared emission from tin{\textendash}Lead (Sn{\textendash}Pb) alloyed perovskite quantum dots by sodium doping",

abstract = "Phase-stable CsSnxPb1−xI3 perovskite quantum dots (QDs) hold great promise for optoelectronic applications owing to their strong response in the near-infrared region. Unfortunately, optimal utilization of their potential is limited by the severe photoluminescence (PL) quenching, leading to extremely low quantum yields (QYs) of approximately 0.3 \%. The ultra-low sodium (Na) doping presented herein is found to be effective in improving PL QYs of these alloyed QDs without alerting their favourable electronic structure. X-ray photoelectron spectroscopy (XPS) studies suggest the formation of a stronger chemical interaction between I− and Sn2+ ions upon Na doping, which potentially helps to stabilize Sn2+ and suppresses the formation of I vacancy defects. The optimized PL QY of the Na-doped QDs reaches up to around 28 \%, almost two orders of magnitude enhancement compared with the pristine one.",

keywords = "doping, nanoparticles, near-infrared emission, perovskite quantum dots, tin{\textendash}lead perovskites",

author = "Feng Liu and Junke Jiang and Yaohong Zhang and Chao Ding and Taro Toyoda and Shuzi Hayase and Ruixiang Wang and Shuxia Tao and Qing Shen",

year = "2020",

month = may,

day = "25",

doi = "10.1002/anie.201916020",

language = "English",

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journal = "Angewandte Chemie - International Edition",

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T1 - Near-Infrared emission from tin–Lead (Sn–Pb) alloyed perovskite quantum dots by sodium doping

AU - Liu, Feng

AU - Jiang, Junke

AU - Zhang, Yaohong

AU - Ding, Chao

AU - Toyoda, Taro

AU - Hayase, Shuzi

AU - Wang, Ruixiang

AU - Tao, Shuxia

AU - Shen, Qing

PY - 2020/5/25

Y1 - 2020/5/25

N2 - Phase-stable CsSnxPb1−xI3 perovskite quantum dots (QDs) hold great promise for optoelectronic applications owing to their strong response in the near-infrared region. Unfortunately, optimal utilization of their potential is limited by the severe photoluminescence (PL) quenching, leading to extremely low quantum yields (QYs) of approximately 0.3 %. The ultra-low sodium (Na) doping presented herein is found to be effective in improving PL QYs of these alloyed QDs without alerting their favourable electronic structure. X-ray photoelectron spectroscopy (XPS) studies suggest the formation of a stronger chemical interaction between I− and Sn2+ ions upon Na doping, which potentially helps to stabilize Sn2+ and suppresses the formation of I vacancy defects. The optimized PL QY of the Na-doped QDs reaches up to around 28 %, almost two orders of magnitude enhancement compared with the pristine one.

AB - Phase-stable CsSnxPb1−xI3 perovskite quantum dots (QDs) hold great promise for optoelectronic applications owing to their strong response in the near-infrared region. Unfortunately, optimal utilization of their potential is limited by the severe photoluminescence (PL) quenching, leading to extremely low quantum yields (QYs) of approximately 0.3 %. The ultra-low sodium (Na) doping presented herein is found to be effective in improving PL QYs of these alloyed QDs without alerting their favourable electronic structure. X-ray photoelectron spectroscopy (XPS) studies suggest the formation of a stronger chemical interaction between I− and Sn2+ ions upon Na doping, which potentially helps to stabilize Sn2+ and suppresses the formation of I vacancy defects. The optimized PL QY of the Na-doped QDs reaches up to around 28 %, almost two orders of magnitude enhancement compared with the pristine one.

KW - doping

KW - nanoparticles

KW - near-infrared emission

KW - perovskite quantum dots

KW - tin–lead perovskites

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DO - 10.1002/anie.201916020

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JF - Angewandte Chemie - International Edition

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ER -

Near-Infrared emission from tin–Lead (Sn–Pb) alloyed perovskite quantum dots by sodium doping

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