Prediction and design of efficient exciplex emitters for high-efficiency, thermally activated delayed-fluorescence organic light-emitting diodes

Xiao-Ke Liu; Zhan Chen; Cai-Jun Zheng; Chuan-Lin Liu; Chun-Sing Lee; Fan Li; Xue-Mei Ou; Xiao-Hong Zhang

doi:10.1002/adma.201405062

Prediction and design of efficient exciplex emitters for high-efficiency, thermally activated delayed-fluorescence organic light-emitting diodes

Adv Mater. 2015 Apr 8;27(14):2378-83. doi: 10.1002/adma.201405062. Epub 2015 Feb 25.

Authors

Xiao-Ke Liu¹, Zhan Chen, Cai-Jun Zheng, Chuan-Lin Liu, Chun-Sing Lee, Fan Li, Xue-Mei Ou, Xiao-Hong Zhang

Affiliation

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, P.R. China; Center of Super-Diamond and Advanced Films (COSDAF), Department of Physics and Materials Sciences, City University of Hong Kong, Hong Kong SAR, P.R. China.

PMID: 25712786
DOI: 10.1002/adma.201405062

Abstract

High-efficiency, thermally activated delayed-fluorescence organic light-emitting diodes based on exciplex emitters are demonstrated. The best device, based on a TAPC:DPTPCz emitter, shows a high external quantum efficiency of 15.4%. Strategies for predicting and designing efficient exciplex emitters are also provided. This approach allow prediction and design of efficient exciplex emitters for achieving high-efficiency organic light-emitting diodes, for future use in displays and lighting applications.

Keywords: charge transfer; delayed fluorescence; exciplex; organic light-emitting diodes.