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P‐136: New Materials for Organic Light‐Emitting Diodes Displaying Thermally‐Activated Delayed Fluorescence
Author(s) -
O'Connell Jenny L.,
Macdonald James M.,
Scully Andrew D.,
Skidmore Melissa A.,
Wilson Anthony J.,
Bown Mark,
Ueno Kazunori
Publication year - 2015
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/sdtp.10156
Subject(s) - fluorescence , quantum yield , quantum efficiency , oled , optoelectronics , materials science , diode , luminescence , quantum , photochemistry , yield (engineering) , nanotechnology , optics , chemistry , composite material , physics , layer (electronics) , quantum mechanics
Several examples of a new class of materials which exhibit thermally‐activated delayed fluorescence (TADF) were designed and synthesised. Structure‐activity relationships were explored in order to colour‐tune the fluorescence (from yellow to blue) and to improve the luminescence quantum yield. Device architectures were optimised for four materials in this class. Notably, the yellow device (CIE 1931xy coordinates 0.407, 0.557) displays a maximum external quantum efficiency (EQE) of 14.3%.