Tandem organic light-emitting diodes with KBH4 doped 9,10-bis(3-(pyridin-3-yl)phenyl) anthracene connected to the charge generation layer

Opt Express. 2012 Jun 18;20(13):14564-72. doi: 10.1364/OE.20.014564.

Abstract

Tandem organic light emitting diodes (OLEDs) are ideal for lighting applications due to their low working current density at high brightness. In this work, we have studied an efficient electron transporting layer of KBH(4) doped 9,10-bis(3-(pyridin-3-yl)phenyl)anthracene (DPyPA) which is located adjacent to charge generation layer of MoO(3)/NPB. The excellent transporting property of the DPyPA:KBH(4) layer helps the tandem OLED to achieve a lower voltage than the tandem device with the widely used tris-(8-hydroxyquinoline)aluminum:Li. For the tandem white OLED with a fluorescent blue unit and a phosphorescent yellow unit, we've achieved a high current efficiency of 75 cd/A, which can be further improved to 120 cd/A by attaching a diffuser layer.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Anthracenes / chemistry*
  • Equipment Design
  • Equipment Failure Analysis
  • Lighting / instrumentation*
  • Organic Chemicals / chemistry*
  • Semiconductors*
  • Static Electricity

Substances

  • Anthracenes
  • Organic Chemicals
  • anthracene