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Organic Light‐Emitting Diode: Effect of Carrier Balance on Device Degradation of Organic Light‐Emitting Diodes Based on Thermally Activated Delayed Fluorescence Emitters (Adv. Electron. Mater. 5/2019)
Author(s) -
Tanaka Masaki,
Noda Hiroki,
Nakanotani Hajime,
Adachi Chihaya
Publication year - 2019
Publication title -
advanced electronic materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.25
H-Index - 56
ISSN - 2199-160X
DOI - 10.1002/aelm.201970027
Subject(s) - oled , materials science , optoelectronics , diode , exciton , degradation (telecommunications) , fluorescence , polaron , light emitting diode , photochemistry , electron , optics , nanotechnology , chemistry , electrical engineering , physics , engineering , layer (electronics) , quantum mechanics
In article number 1800708 , Chihaya Adachi and coworkers revealed that the change in the carrier balance factor is one of the degradation mechanisms of organic light‐emitting diodes (OLEDs) based on thermally activated delayed fluorescence (TADF) emitters. The shortening of exciton lifetime of emitters suppresses the triplet‐polaron interaction which results in the formation of the deep electron traps and the changes in the carrier recombination site. This work provides a new strategy to design the highly stable devices from the perspective of the carrier transport stability.