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231225s2019 xx |||||o 00| ||eng c |
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|a 10.1002/adma.201805836
|2 doi
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|a pubmed24n0968.xml
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|a (NLM)30412319
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Zhao, Lianfeng
|e verfasserin
|4 aut
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| 245 |
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|a Improved Outcoupling Efficiency and Stability of Perovskite Light-Emitting Diodes using Thin Emitting Layers
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|c 2019
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
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|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 11.01.2019
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a Citation Status PubMed-not-MEDLINE
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|a © 2018 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.
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|a Hybrid organic-inorganic perovskite semiconductors have shown potential to develop into a new generation of light-emitting diode (LED) technology. Herein, an important design principle for perovskite LEDs is elucidated regarding optimal perovskite thickness. Adopting a thin perovskite layer in the range of 35-40 nm is shown to be critical for both device efficiency and stability improvements. Maximum external quantum efficiencies (EQEs) of 17.6% for Cs0.2 FA0.8 PbI2.8 Br0.2 , 14.3% for CH3 NH3 PbI3 (MAPbI3 ), 10.1% for formamidinium lead iodide (FAPbI3 ), and 11.3% for formamidinium lead bromide (FAPbBr3 )-based LEDs are demonstrated with optimized perovskite layer thickness. Optical simulations show that the improved EQEs source from improved light outcoupling. Furthermore, elevated device temperature caused by Joule heating is shown as an important factor contributing to device degradation, and that thin perovskite emitting layers maintain lower junction temperature during operation and thus demonstrate increased stability
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|a Journal Article
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|a Joule heating
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|a light outcoupling
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|a organic-inorganic hybrid perovskites
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|a perovskite light-emitting devices
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|a thermal management
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|a Lee, Kyung Min
|e verfasserin
|4 aut
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|a Roh, Kwangdong
|e verfasserin
|4 aut
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|a Khan, Saeed Uz Zaman
|e verfasserin
|4 aut
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| 700 |
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|a Rand, Barry P
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Advanced materials (Deerfield Beach, Fla.)
|d 1998
|g 31(2019), 2 vom: 05. Jan., Seite e1805836
|w (DE-627)NLM098206397
|x 1521-4095
|7 nnns
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| 773 |
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|g volume:31
|g year:2019
|g number:2
|g day:05
|g month:01
|g pages:e1805836
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|u http://dx.doi.org/10.1002/adma.201805836
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