White Electroluminescence from a Single Polymer System: Improved Performance by Means of Enhanced Efficiency and Red‐Shifted Luminescence of the Blue‐Light‐Emitting Species

Abstract

High-efficiency white electroluminescence from a single polymer is achieved by enhancing the electroluminescence efficiency and effecting a red-shift in the emission spectrum of the blue emissive species. A single-layer device of the resultant polymer exhibits a higher luminous efficiency than the nonmodified species (12.8 cd A–1, see figure) and an external quantum efficiency of 5.4 % with CIE coordinates of (0.31,0.36), exemplifying the success of the reported methodology. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2089/2007/c2942_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.