University of Hertfordshire

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  • Jin H. Ahn
  • Cristina Bertoni
  • Steve Dunn
  • Changsheng Wang
  • Dmitri V. Talapin
  • Nikolai Gaponik
  • Alexander Eychmüller
  • Yulin Hua
  • Martin R. Bryce
  • Michael C. Petty
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Original languageEnglish
Article number335202
JournalNanotechnology
Journal publication date22 Aug 2007
Volume18
Issue33
DOIs
Publication statusPublished - 22 Aug 2007

Abstract

A blue-green fluorescent organic dye and red-emitting nanoparticles, based on II-VI semiconductors, have been used together in the fabrication of white organic light-emitting devices. In this work, the materials were combined in two different ways: in the form of a blend, and as separate layers deposited on the opposite sides of the substrate. The blended-layer structure provided purer white emission. However, this device also exhibited a number of disadvantages, namely a high drive voltage, a low efficiency and some colour instability. These problems could be avoided by using a device structure that was fabricated using separate dye and nanoparticle layers.

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