Affordable Access

High power efficiency in single layer blue phosphorescent organic light-emitting diodes

Authors
Journal
Journal of Luminescence
0022-2313
Publisher
Elsevier
Publication Date
Volume
131
Issue
12
Identifiers
DOI: 10.1016/j.jlumin.2011.07.014
Keywords
  • Blue Phosphorescent Organic Light-Emitting Diodes
  • Simple Structure
  • High Power Efficiency
Disciplines
  • Physics

Abstract

Abstract High efficiency single layer blue phosphorescent organic light-emitting diodes (PHOLEDs) without any charge transport layer were developed. A mixed host of spirobifluorene based phosphine oxide (SPPO13) and 1, 1-bis[(di-4-tolylamino)phenyl]cyclohexane (TAPC) was used as the host in the emitting layer. A high maximum external quantum efficiency of 15.8% and a quantum efficiency of 8.6% at 1000 cd/m 2 were achieved in the single-layer blue PHOLEDs without any charge transport layer. The maximum power efficiency and power efficiency at 1000 cd/m 2 were 31.4 and 16.9 lm/W, respectively.

There are no comments yet on this publication. Be the first to share your thoughts.