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.
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) .
Nano-organic Photoelectronic Laboratory and Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, PR China.
Jun
J
Ye
Cai-Jun
CJ
Zheng
Xue-Mei
XM
Ou
Xiao-Hong
XH
Zhang
Man-Keung
MK
Fung
Chun-Sing
CS
Lee
D008163:Luminescent Measurements / Q000295:instrumentation*; D011789:Quantum Theory; D013876:Thiophenes / Q000737:chemistry
D013876:Thiophenes; C088015:benzothiophene