Thermally Activated Delayed Fluorescence Polymers for Efficient Solution‐Processed Organic Light‐Emitting Diodes

Abstract
Thermally activated delayed fluorescence (TADF) π-conjugated polymers are developed for solution-processed TADF–OLEDs. Benzophenone-based alternating donor–acceptor structures contribute to the small ∆EST, enabling efficient exciton-harvesting through TADF. Solution-processed OLEDs using the TADF polymers as emitters can achieve high maximum external electroluminescence efficiencies of up to 9.3%.
Funding Information
  • World-Leading Innovation R&D on Science and Technology (FIRST)
  • JSPS Young Scientist (A) (25708032)
  • Scientific Research on Innovative Areas (15H01049)
  • Challenging Exploratory Research (26620168)
  • Sumitomo Electric Group CSR Foundation
  • Ogasawara Foundation for the Promotion of Science and Engineering
  • Kurata Memorial Hitachi Science and Technology Foundation
  • MEXT, Japan