Journal
CHINESE CHEMICAL LETTERS
Volume 28, Issue 1, Pages 29-31Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/j.cclet.2016.07.001
Keywords
Perovskite light-emitting diodes; Quasi-2D; Sky-blue emission; Morphology; Solution process
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Funding
- National Basic Research Program of China-Fundamental Studies of Perovskite Solar Cells [2015CB932200]
- Natural Science Foundation of Jiangsu Province, China [BK20131413, BK20140952, BM2012010]
- National Natural Science Foundation of China [11474164, 61405091]
- National 973 Program of China [2015CB654901]
- Jiangsu Specially-Appointed Professor program
- Synergetic Innovation Center for Organic Electronics and Information Displays
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A mixed organic (4-phenylbutylamine, 4-PBA) and inorganic (cesium, Cs) cations are used to deposit quasi-two-dimensional layered perovskites. This layered perovskites exhibit good film coverage as two-dimensional perovskites and high emission performance close to three-dimensional organic-inorganic hybrid perovskites. Light-emitting diodes (LEDs) are fabricated by using solution process based on the quasi-two-dimensional layered perovskites. The perovskite LEDs exhibit a sky-blue emission with electroluminescence peak at 491 nm and a low turn on voltage at 2.9 V. The maximum external quantum efficiency reaches 0.015% at brightness of 186 cd/m(2). (C) 2016 Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences. Published by Elsevier B.V. All rights reserved.
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