Highly efficient excimer-based white phosphorescent devices with improved power efficiency and color rendering index

Xiaohui Yang, Zixing Wang, Sijesh Madakuni, Jian Li, Ghassan E. Jabbour

Research output: Contribution to journalArticle

45 Scopus citations

Abstract

Power efficiency, Commission Internationale d'Énclairage (CIE) coordinates, and color rendering index (CRI) of white phosphorescent excimer devices were improved by utilizing two platinum complexes as emissive dopants and exploring different device structures. Compared with devices containing two emissive layers each having a different dopant, devices having two dopants incorporated in a single host layer showed better color stability with the change in operating voltage. White phosphorescent excimer devices having the double-doped emissive layer showed an external quantum efficiency and a power efficiency of 14.5% and 17 lm/W, respectively, at 500 cd/ m2. The CIE coordinates and CRI of the devices were (0.382, 0.401) and 81, which were almost independent of the drive voltage.

Original languageEnglish (US)
Article number193305
JournalApplied Physics Letters
Volume93
Issue number19
DOIs
StatePublished - Nov 21 2008

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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