A bipolar host containing carbazole/dibenzothiophene for efficient solution-processed blue and white phosphorescent OLEDs

Wei Chieh Lin, Wei Ching Huang, Ming Hong Huang, Chia Chan Fan, Hao Wu Lin*, Li Yin Chen, Yen Wei Liu, Jin Sheng Lin, Teng Chih Chao, Mei Rurng Tseng

*Corresponding author for this work

Research output: Contribution to journalArticle

42 Scopus citations

Abstract

The photophysical properties of a novel small molecule host containing carbazole/dibenzothiophene (CzDBS) were studied. Solution processing of CzDBS found well-balanced bipolar functionalities, high triplet bandgap, and good thin-film morphology. By using this compound as a host material, high-performance solution-processed blue and white phosphorescent organic light emitting devices were fabricated. The blue and white emitting devices showed maximum efficiencies, with 13.9% external quantum efficiency (EQE), 29.7 cd A-1 CE, 18.6 lm W-1 PE and 13.8% EQE, 29.1 cd A -1 CE, and 17.7 lm W-1 PE, respectively. In addition, through incorporation of the light-extraction structures, white-light emission with the Commission Internationale de I'Eclairage chromaticity coordinates (0.38, 0.40) and satisfactory efficiencies of 22.9% EQE, 48.4 cd A-1 CE, and 30.4 lm W-1 PE were demonstrated.

Original languageEnglish
Pages (from-to)6835-6841
Number of pages7
JournalJournal of Materials Chemistry C
Volume1
Issue number41
DOIs
StatePublished - 7 Nov 2013

Fingerprint Dive into the research topics of 'A bipolar host containing carbazole/dibenzothiophene for efficient solution-processed blue and white phosphorescent OLEDs'. Together they form a unique fingerprint.

  • Cite this

    Lin, W. C., Huang, W. C., Huang, M. H., Fan, C. C., Lin, H. W., Chen, L. Y., Liu, Y. W., Lin, J. S., Chao, T. C., & Tseng, M. R. (2013). A bipolar host containing carbazole/dibenzothiophene for efficient solution-processed blue and white phosphorescent OLEDs. Journal of Materials Chemistry C, 1(41), 6835-6841. https://doi.org/10.1039/c3tc31357c