Enhanced Blue Emission in Rb2HfCl6 Double Perovskite via Bi3+ Doping and Cs+ Alloying

Haoyue Wan; Fengyan Jia; Filip Dinic; Muhammad Imran; Benjamin Rehl; Yanjiang Liu; Watcharaphol Paritmongkol; Pan Xia; Ya Kun Wang; Yuan Liu; Sasa Wang; Quan Lyu; Giovanni Francesco Cotella; Peter Chun; Oleksandr Voznyy; Sjoerd Hoogland; Edward H. Sargent

doi:10.1021/acs.chemmater.2c02673

Enhanced Blue Emission in Rb₂HfCl₆ Double Perovskite via Bi³⁺ Doping and Cs⁺ Alloying

Haoyue Wan, Fengyan Jia, Filip Dinic, Muhammad Imran, Benjamin Rehl, Yanjiang Liu, Watcharaphol Paritmongkol, Pan Xia, Ya Kun Wang, Yuan Liu, Sasa Wang, Quan Lyu, Giovanni Francesco Cotella, Peter Chun, Oleksandr Voznyy, Sjoerd Hoogland, Edward H. Sargent^*

^*Corresponding author for this work

Chemistry

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

9 Scopus citations

Abstract

Lead-free double perovskites offer non-toxic properties and strong emission via alloying and doping. Herein, we report the synthesis of Bi-doped pure Rb₂HfCl₆ and Cs-alloyed RbCsHfCl₆ microcrystals. The pure Rb₂HfCl₆ microcrystals are nearly non-emissive while alloying with Cs and Bi doping lead to strong deep blue emission at 466 nm with an increase in photoluminescence quantum yield from ∼0 to 66%. Density functional theory studies attest to the improved phase stability due to Cs-alloying and link photoluminescence to Bi³⁺ dopant-induced localized states.

Original language	English (US)
Pages (from-to)	948-953
Number of pages	6
Journal	Chemistry of Materials
Volume	35
Issue number	3
DOIs	https://doi.org/10.1021/acs.chemmater.2c02673
State	Published - Feb 14 2023

Funding

This publication is based in part on work supported by the Natural Sciences and Engineering Research Council of Canada (NSERC). The authors also acknowledge Huawei Canada for their financial support. Computations were performed on the Niagra supercomputer at the SciNet HPC Consortium. SciNet is funded by the Canada Foundation for Innovation; the Government of Ontario; Ontario Research Fund – Research Excellence; and the University of Toronto.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Materials Chemistry

Access to Document

10.1021/acs.chemmater.2c02673

Cite this

Wan, H., Jia, F., Dinic, F., Imran, M., Rehl, B., Liu, Y., Paritmongkol, W., Xia, P., Wang, Y. K., Liu, Y., Wang, S., Lyu, Q., Cotella, G. F., Chun, P., Voznyy, O., Hoogland, S., & Sargent, E. H. (2023). Enhanced Blue Emission in Rb₂HfCl₆ Double Perovskite via Bi³⁺ Doping and Cs⁺ Alloying. Chemistry of Materials, 35(3), 948-953. https://doi.org/10.1021/acs.chemmater.2c02673

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abstract = "Lead-free double perovskites offer non-toxic properties and strong emission via alloying and doping. Herein, we report the synthesis of Bi-doped pure Rb2HfCl6 and Cs-alloyed RbCsHfCl6 microcrystals. The pure Rb2HfCl6 microcrystals are nearly non-emissive while alloying with Cs and Bi doping lead to strong deep blue emission at 466 nm with an increase in photoluminescence quantum yield from ∼0 to 66%. Density functional theory studies attest to the improved phase stability due to Cs-alloying and link photoluminescence to Bi3+ dopant-induced localized states.",

author = "Haoyue Wan and Fengyan Jia and Filip Dinic and Muhammad Imran and Benjamin Rehl and Yanjiang Liu and Watcharaphol Paritmongkol and Pan Xia and Wang, {Ya Kun} and Yuan Liu and Sasa Wang and Quan Lyu and Cotella, {Giovanni Francesco} and Peter Chun and Oleksandr Voznyy and Sjoerd Hoogland and Sargent, {Edward H.}",

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AU - Imran, Muhammad

AU - Rehl, Benjamin

AU - Liu, Yanjiang

AU - Paritmongkol, Watcharaphol

AU - Xia, Pan

AU - Wang, Ya Kun

AU - Liu, Yuan

AU - Wang, Sasa

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AU - Cotella, Giovanni Francesco

AU - Chun, Peter

AU - Voznyy, Oleksandr

AU - Hoogland, Sjoerd

AU - Sargent, Edward H.

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AB - Lead-free double perovskites offer non-toxic properties and strong emission via alloying and doping. Herein, we report the synthesis of Bi-doped pure Rb2HfCl6 and Cs-alloyed RbCsHfCl6 microcrystals. The pure Rb2HfCl6 microcrystals are nearly non-emissive while alloying with Cs and Bi doping lead to strong deep blue emission at 466 nm with an increase in photoluminescence quantum yield from ∼0 to 66%. Density functional theory studies attest to the improved phase stability due to Cs-alloying and link photoluminescence to Bi3+ dopant-induced localized states.

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