DataVXChemistry of MaterialsPaper
journal article·2023-02-14

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

Chemistry of Materials· Volume 35· Issue 3
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Source abstract

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 Rb 2 HfCl 6 and Cs-alloyed RbCsHfCl 6 microcrystals. The pure Rb 2 HfCl 6 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 Bi 3+ dopant-induced localized states.
Source: openalex_inverted_index · Quality: baseline

Research context

Metals & alloysElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Luminescence Properties of Advanced Materials · Optical properties and cooling technologies in crystalline materials

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Department of Electrical and Computer Engineering, University of Toronto, 10 King’s College Road, Toronto, OntarioM5S 3G4, Canada

Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Rare Earth Materials Chemistry and Applications, PKU-HKU Joint Laboratory in Rare Earth Materials and Bioinorganic Chemistry, College of Chemistry and Molecular Engineering, Peking University, Beijing100871, China

Department of Physical and Environmental Sciences, University of Toronto, Scarborough, 1065 Military Trail, Toronto, OntarioM1C 1A4, Canada

Huawei Technologies Research and Development (UK) Ltd., 101 Science Park, Milton Road, CambridgeCB4 0FY, U. K.

Huawei Technologies Research and Development (UK) Ltd., Phoenix House, B55 Adastral Park, Martlesham Heath, IpswichIP5 3RE, U. K.

Huawei Technologies Canada, 19 Allstate Pkwy, Markham, OntarioL3R 5A4, Canada

Funding

Huawei Technologies · Natural Sciences and Engineering Research Council of Canada

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