Highly efficient blue phosphorescent OLEDs using large bandgap host materials

Fu Chuan Fang*, Yuan Li Liao, Ken Tsung Wong, Ming Han Tsai, Hao Wu Lin, Hai-Ching Su, Chung Chih Wu, Chih I. Wu

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


The synthesis and properties of 3,6-bis(triphenylsilyl)carbazole as an effective host material for blue electrophosphorescence are reported. The electrochemically active C3 and C6 sites of carbazole are non-conjugated blocked with the steric, bulky and large-gap triphenylsilyls, the resulting new compound retains the large triplet energy of carbazole yet exhibits much enhanced morphological stability and electrochemical stability in comparison with previous carbazole-based host materials. Using this new host material, blue phosphorescent OLEDs having high efficiencies up to 16%, 30.6 cd/A and 26. 7 lm/W are demonstrated.

Original languageEnglish
Title of host publicationOrganic Optoelectronics and Photonics II
StatePublished - 9 Aug 2006
EventOrganic Optoelectronics and Photonics II - Strasbourg, France
Duration: 3 Apr 20066 Apr 2006

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


ConferenceOrganic Optoelectronics and Photonics II


  • 9,9'-spirobifluorene
  • Blue electrophosphorescence
  • Carbazole
  • Host material
  • Triarylamine


Dive into the research topics of 'Highly efficient blue phosphorescent OLEDs using large bandgap host materials'. Together they form a unique fingerprint.

Cite this