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Title: Color-Pure Violet-Light-Emitting Diodes Based on Layered Lead Halide Perovskite Nanoplates

Abstract

Violet electroluminescence is rare in both inorganic and organic light-emitting diodes (LEDs). Low-cost and room- temperature solution-processed lead halide perovskites with high- efficiency and color-tunable photoluminescence are promising for LEDs. Here, we report room-temperature color-pure violet LEDs based on a two-dimensional lead halide perovskite material, namely, 2-phenylethylammonium (C6H5CH2CH2NH3+, PEA) lead bromide [(PEA)2PbBr4]. The natural quantum confinement of two-dimen- sional layered perovskite (PEA)2PbBr4 allows for photoluminescence of shorter wavelength (410 nm) than its three-dimensional counterpart. By converting as-deposited polycrystalline thin films to micrometer-sized (PEA)2PbBr4 nanoplates using solvent vapor annealing, we successfully integrated this layered perovskite material into LEDs and achieved efficient room-temperature violet electroluminescence at 410 nm with a narrow bandwidth. This conversion to nanoplates significantly enhanced the crystallinity and photophysical properties of the (PEA)2PbBr4 samples and the external quantum efficiency of the violet LED. Finally, the solvent vapor annealing method reported herein can be generally applied to other perovskite materials to increase their grain size and, ultimately, improve the performance of optoelectronic devices based on perovskite materials.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1];  [1]
  1. Department of Chemistry and ‡Department of Electrical and Computer Engineering, University of Wisconsin−Madison, Madison, Wisconsin 53706, United States
Publication Date:
Research Org.:
Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Org.:
USDOE Office of Science (SC), Basic Energy Sciences (BES); US Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF)
OSTI Identifier:
1259570
Alternate Identifier(s):
OSTI ID: 1281965
Grant/Contract Number:  
FG02-09ER46664; FA9550-14-1-0128
Resource Type:
Published Article
Journal Name:
ACS Nano
Additional Journal Information:
Journal Name: ACS Nano Journal Volume: 10 Journal Issue: 7; Journal ID: ISSN 1936-0851
Publisher:
American Chemical Society
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; layered perovskite; violet-light-emitting diode (LED); solvent vapor annealing; nanoplate

Citation Formats

Liang, Dong, Peng, Yuelin, Fu, Yongping, Shearer, Melinda J., Zhang, Jingjing, Zhai, Jianyuan, Zhang, Yi, Hamers, Robert J., Andrew, Trisha L., and Jin, Song. Color-Pure Violet-Light-Emitting Diodes Based on Layered Lead Halide Perovskite Nanoplates. United States: N. p., 2016. Web. https://doi.org/10.1021/acsnano.6b02683.
Liang, Dong, Peng, Yuelin, Fu, Yongping, Shearer, Melinda J., Zhang, Jingjing, Zhai, Jianyuan, Zhang, Yi, Hamers, Robert J., Andrew, Trisha L., & Jin, Song. Color-Pure Violet-Light-Emitting Diodes Based on Layered Lead Halide Perovskite Nanoplates. United States. https://doi.org/10.1021/acsnano.6b02683
Liang, Dong, Peng, Yuelin, Fu, Yongping, Shearer, Melinda J., Zhang, Jingjing, Zhai, Jianyuan, Zhang, Yi, Hamers, Robert J., Andrew, Trisha L., and Jin, Song. Tue . "Color-Pure Violet-Light-Emitting Diodes Based on Layered Lead Halide Perovskite Nanoplates". United States. https://doi.org/10.1021/acsnano.6b02683.
@article{osti_1259570,
title = {Color-Pure Violet-Light-Emitting Diodes Based on Layered Lead Halide Perovskite Nanoplates},
author = {Liang, Dong and Peng, Yuelin and Fu, Yongping and Shearer, Melinda J. and Zhang, Jingjing and Zhai, Jianyuan and Zhang, Yi and Hamers, Robert J. and Andrew, Trisha L. and Jin, Song},
abstractNote = {Violet electroluminescence is rare in both inorganic and organic light-emitting diodes (LEDs). Low-cost and room- temperature solution-processed lead halide perovskites with high- efficiency and color-tunable photoluminescence are promising for LEDs. Here, we report room-temperature color-pure violet LEDs based on a two-dimensional lead halide perovskite material, namely, 2-phenylethylammonium (C6H5CH2CH2NH3+, PEA) lead bromide [(PEA)2PbBr4]. The natural quantum confinement of two-dimen- sional layered perovskite (PEA)2PbBr4 allows for photoluminescence of shorter wavelength (410 nm) than its three-dimensional counterpart. By converting as-deposited polycrystalline thin films to micrometer-sized (PEA)2PbBr4 nanoplates using solvent vapor annealing, we successfully integrated this layered perovskite material into LEDs and achieved efficient room-temperature violet electroluminescence at 410 nm with a narrow bandwidth. This conversion to nanoplates significantly enhanced the crystallinity and photophysical properties of the (PEA)2PbBr4 samples and the external quantum efficiency of the violet LED. Finally, the solvent vapor annealing method reported herein can be generally applied to other perovskite materials to increase their grain size and, ultimately, improve the performance of optoelectronic devices based on perovskite materials.},
doi = {10.1021/acsnano.6b02683},
journal = {ACS Nano},
number = 7,
volume = 10,
place = {United States},
year = {2016},
month = {6}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.1021/acsnano.6b02683

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