Integration of Environmental Friendly Perovskites for High-efficiency White Light-emitting Diodes

Hanxin Liu; Chun Sun; Zhiyuan Gao; Chong Geng; Shuangshuang Shi; Le Wang; Sijing Su; Wengang Bi

doi:10.1186/s11671-019-2980-4

Nanoscale Research Letters (May 2019)

Integration of Environmental Friendly Perovskites for High-efficiency White Light-emitting Diodes

Hanxin Liu,
Chun Sun,
Zhiyuan Gao,
Chong Geng,
Shuangshuang Shi,
Le Wang,
Sijing Su,
Wengang Bi

Affiliations

Hanxin Liu: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Chun Sun: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Zhiyuan Gao: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Chong Geng: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Shuangshuang Shi: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Le Wang: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Sijing Su: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology
Wengang Bi: Tianjin Key Laboratory of Electronic Materials and Devices, School of Electronics and Information Engineering, Hebei University of Technology

DOI: https://doi.org/10.1186/s11671-019-2980-4
Journal volume & issue: Vol. 14, no. 1
pp. 1 – 9

Abstract

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Abstract Perovskite quantum dots (QDs) have been widely used in white light-emitting diodes (WLEDs), due to their high quantum yield (QY), tunable bandgap, and simple preparation. However, the red-emitting perovskite QDs are usually containing iodine (I), which is not stable under continuous light irradiation. Herein, perovskite-based WLED is fabricated by lead-free bismuth (Bi)-doped inorganic perovskites Cs2SnCl6 and less-lead Mn-doped CsPbCl3 QDs, which emits white light with color coordinates of (0.334, 0.297). The Bi-doped Cs2SnCl6 and Mn-doped CsPbCl3 QDs both show excellent stability when kept in the ambient air. As benefits from this desired characteristic, the as-prepared WLED shows excellent stability along with operating time. These results can promote the application of inorganic perovskite QDs in the field of WLEDs.

Published in Nanoscale Research Letters

ISSN: 1931-7573 (Print); 1556-276X (Online)
Publisher: SpringerOpen
Country of publisher: United Kingdom
LCC subjects: Technology: Electrical engineering. Electronics. Nuclear engineering: Materials of engineering and construction. Mechanics of materials
Website: https://www.springer.com/journal/11671

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