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Title: High-Efficiency Light-Emitting Diodes of Organometal Halide Perovskite Amorphous Nanoparticles
Authors: Xing, Jun
Yan, Fei
Zhao, Yawen
Chen, Shi
Yu, Huakang
Zhang, Qing
Zeng, Rongguang
Demir, Hilmi Volkan
Sun, Xiaowei
Huan, Alfred
Xiong, Qihua
Keywords: Electroluminescence
Light-emitting Diodes
Issue Date: 2016
Source: Xing, J., Yan, F., Zhao, Y., Chen, S., Yu, H., Zhang, Q., et al. (2016). High-Efficiency Light-Emitting Diodes of Organometal Halide Perovskite Amorphous Nanoparticles. ACS Nano, 10(7), 6623-6630.
Series/Report no.: ACS Nano
Abstract: Organometal halide perovskite has recently emerged as a very promising family of materials with augmented performance in electronic and optoelectronic applications including photovoltaic devices, photodetectors, and light-emitting diodes. Herein, we propose and demonstrate facile solution synthesis of a series of colloidal organometal halide perovskite CH3NH3PbX3 (X = halides) nanoparticles with amorphous structure, which exhibit high quantum yield and tunable emission from ultraviolet to near-infrared. The growth mechanism and photoluminescence properties of the perovskite amorphous nanoparticles were studied in detail. A high-efficiency green-light-emitting diode based on amorphous CH3NH3PbBr3 nanoparticles was demonstrated. The perovskite amorphous nanoparticle-based light-emitting diode shows a maximum luminous efficiency of 11.49 cdA-1, a power efficiency of 7.84 lmW-1, and an external quantum efficiency of 3.8%, which is 3.5 times higher than that of the best colloidal perovskite quantum-dot-based light-emitting diodes previously reported. Our findings indicate the great potential of colloidal perovskite amorphous nanoparticles in light-emitting devices.
ISSN: 1936-0851
DOI: 10.1021/acsnano.6b01540
Rights: © 2016 American Chemical Society.
Fulltext Permission: none
Fulltext Availability: No Fulltext
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