Thermally activated delayed-fluorescence organic light-emitting diodes based on exciplex emitter with high efficiency and low roll-off

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review

19 Scopus Citations
View graph of relations

Author(s)

  • Tong Lin
  • Tianyou Zhang
  • Qiaogang Song
  • Fangming Jin
  • Zheqin Liu
  • Zisheng Su
  • Yongshi Luo
  • Bei Chu
  • Wenlian Li

Related Research Unit(s)

Detail(s)

Original languageEnglish
Pages (from-to)69-73
Journal / PublicationOrganic Electronics: physics, materials, applications
Volume38
Publication statusPublished - 1 Nov 2016

Abstract

Highly efficient thermally activated delayed fluorescence (TADF) organic light-emitting diodes (OLEDs) based on exciplex are demonstrated in a blended system with commercially available 1,1-bis((di-4-tolylamino)phenyl)cyclohexane (TAPC) and 2,4,6-tris(biphenyl-3-yl)-1,3,5-triazine (T2T). By well adjusting the ratio between these two materials, the optimized device shows a low turn-on voltage of 2.4 V and a high external quantum efficiency (EQE) of 11.6%. More importantly, the device retains an EQE of 9.4% even at a high luminescence of 1000 cd/m2. The low efficiency roll-off is attributed to the small singlet-triplet splitting and the short of the delayed fluorescence lifetime. Both EQE and efficiency roll-off are ones of the best performance among the reported TADF OLEDs based on exciplex.

Research Area(s)

  • Efficiency roll-off, Exciplex, OLED, TADF

Citation Format(s)

Thermally activated delayed-fluorescence organic light-emitting diodes based on exciplex emitter with high efficiency and low roll-off. / Lin, Tong; Zhang, Tianyou; Song, Qiaogang; Jin, Fangming; Liu, Zheqin; Su, Zisheng; Luo, Yongshi; Chu, Bei; Lee, C. S.; Li, Wenlian.

In: Organic Electronics: physics, materials, applications, Vol. 38, 01.11.2016, p. 69-73.

Research output: Journal Publications and Reviews (RGC: 21, 22, 62)21_Publication in refereed journalpeer-review