Remanagement of Singlet and Triplet Excitons in Single-Emissive-Layer Hybrid White Organic Light-Emitting Devices Using Thermally Activated Delayed Fluorescent Blue Exciplex

• Published in: Advanced materials (Weinheim) Vol. 27; no. 44; pp. 7079 - 7085
• Main Authors: Liu, Xiao-Ke, Chen, Zhan, Qing, Jian, Zhang, Wen-Jun, Wu, Bo, Tam, Hoi Lam, Zhu, Furong, Zhang, Xiao-Hong, Lee, Chun-Sing
• Format: Journal Article
• Language: English
• Published: Germany Blackwell Publishing Ltd 25-11-2015
• Subjects: Activated; Color; delayed fluorescence; Devices; Dimerization; Electric potential; Electrical Equipment and Supplies; exciplex; Excitons; Fluorescence; Fluorescent Dyes - chemistry; hybrid white OLEDs; Light; Organic Chemicals - chemistry; Organic light emitting diodes; phosphorescence; Quantum efficiency; single emissive layers; Spectrometry, Fluorescence; Temperature; Voltage; phosphorescence; hybrid white OLEDs; delayed fluorescence; exciplex; single emissive layers
• ISSN: 0935-9648; 1521-4095
• DOI: 10.1002/adma.201502897

A high‐performance hybrid white organic light‐emitting device (WOLED) is demo­nstrated based on an efficient novel thermally activated delayed fluorescence (TADF) blue exciplex system. This device shows a low turn‐on voltage of 2.5 V and maximum forward‐viewing external quantum efficiency of 25.5%, which opens a new avenue for achieving high‐performance hybrid WOLEDs with simple structures.