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

• DOI: 10.1002/adma.201502897
• Publication Date: 2015-10-05T16:57:51Z
• Authors: Xiao‐Ke Liu; Zhan Chen; Jian Qing; Wen‐Jun Zhang; Bo Wu; Hoi Lam Tam; Furong Zhu; Xiao‐Hong Zhang; Chun‐Sing Lee
• Keywords: Spectrometry, Fluorescence; Light; Electrical Equipment and Supplies; Temperature; Color; 02 engineering and technology; Organic Chemicals; 0210 nano-technology; Dimerization; 7. Clean energy; Fluorescent Dyes

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.