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Management of Singlet and Triplet Excitons in a Single Emission Layer: A Simple Approach for a High‐Efficiency Fluorescence/Phosphorescence Hybrid White Organic Light‐Emitting Device
Author(s) -
Ye Jun,
Zheng CaiJun,
Ou XueMei,
Zhang XiaoHong,
Fung ManKeung,
Lee ChunSing
Publication year - 2012
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.201201124
Subject(s) - phosphorescence , materials science , fluorescence , exciton , phosphorescent organic light emitting diode , singlet state , optoelectronics , photochemistry , layer (electronics) , simple (philosophy) , singlet oxygen , nanotechnology , optics , atomic physics , excited state , chemistry , condensed matter physics , oxygen , physics , organic chemistry , philosophy , epistemology
A high‐efficiency single‐emission‐layer (EML) hybrid white organic light emitting device is fabricated based on an ideal sky‐blue fluorophor, DADBT, using a novel doping concentration regulation strategy, which effectively separates and respectively utilizes the singlet and triplet excitons in the single‐EML. The white device shows excellent electroluminescence performance with maximum total efficiencies of 26.6%, 53.5 cd A −1 and 67.2 lm W −1 .