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Blue Electroluminescence: Blue Electrofluorescence Resulting from Exergonic Harvesting of Triplet Excitons (Advanced Optical Materials 18/2019)
Author(s) -
Yi Seung Yeon,
Ihn SooGhang,
Sim Myungsun,
Kim Jong Soo,
Kim Inkoo,
Chung Yeon Sook,
Huh Dal Ho,
Kim Sunghan,
You Youngmin
Publication year - 2019
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201970070
Subject(s) - exciton , electroluminescence , materials science , exergonic reaction , optoelectronics , phosphorescence , singlet state , fluorescence , photochemistry , nanotechnology , optics , atomic physics , chemistry , excited state , physics , condensed matter physics , biochemistry , layer (electronics) , catalysis
Organic molecules capable of exciton harvest have been developed by Sunghan Kim, Youngmin You and co‐workers (see article number 1900630). Exploiting the non‐bonding orbital enables exergonic conversion of triplet excitons into singlet excitons. The harvested singlet excitons produce efficient and medium‐tolerant blue fluorescence emission, without delayed emission components. The strategy can serve as a promising alternative to the existing principles for electroluminescence, because it permits rapid harvesting of triplet exciton, thereby avoiding any hazardous annihilation processes.