Jump to main content
Jump to site search

Issue 10, 2012
Previous Article Next Article

Multifunctional electron-transporting indolizine derivatives for highly efficient blue fluorescence, orange phosphorescence host and two-color based white OLEDs

Author affiliations

Abstract

In this work, derivatives of indolizine are first used as electron-transporting host materials for hybrid fluorescence/phosphorescence white organic light-emitting devices (F/P-WOLED). Of the indolizine derivatives, a blue fluorescent material BPPI (3-(4,4′-biphenyl)-2-diphenylindolizine) was found to have: (1) blue emission with high quantum yields, (2) good morphological and thermal stabilities, (3) electron-transporting properties, and (4) a sufficiently high triplet energy level to act as a host for red or yellow-orange phosphorescent dopants. The multifunctional BPPI enables adaptation of several simplified device configurations. For example, a non-doped blue fluorescent device exhibits good performance with an external quantum efficiency of 3.16% and Commission Internationale de l'Eclairage coordinates of (0.15, 0.07). A high-performance orange phosphorescent device was found to have a high current efficiency of 23.9 cd A−1. Using BPPI, we also demonstrate a F/P-WOLED with a simplified structure, stable emissions and respectable performance (current and external quantum efficiencies of 17.8 cd A−1 and 10.7%, respectively).

Graphical abstract: Multifunctional electron-transporting indolizine derivatives for highly efficient blue fluorescence, orange phosphorescence host and two-color based white OLEDs

Back to tab navigation

Publication details

The article was received on 30 Sep 2011, accepted on 22 Nov 2011 and first published on 11 Jan 2012


Article type: Paper
DOI: 10.1039/C2JM14904D
Citation: J. Mater. Chem., 2012,22, 4502-4510
  •   Request permissions

    Multifunctional electron-transporting indolizine derivatives for highly efficient blue fluorescence, orange phosphorescence host and two-color based white OLEDs

    J. Wan, C. Zheng, M. Fung, X. Liu, C. Lee and X. Zhang, J. Mater. Chem., 2012, 22, 4502
    DOI: 10.1039/C2JM14904D

Search articles by author

Spotlight

Advertisements