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17.3: High‐Performance Blue OLEDs Based on a Sterically Hindered Pyrene Host Material
Author(s) -
Yeh ChiaChun,
Lee MengTing,
Chen HsianHung,
Chen Chin H.
Publication year - 2004
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 - 10.1889/1.1825796
Subject(s) - pyrene , steric effects , oled , luminance , excimer , common emitter , fluorescence , materials science , photochemistry , doping , chemistry , optoelectronics , optics , stereochemistry , nanotechnology , organic chemistry , physics , layer (electronics)
Abstract We have developed a highly efficient blue OLED emitter based on a sterically hindered fluorescent host material of tetra(o‐tolyl) pyrene (TOTP) which effectively suppresses the excimer emission of its EL. Doped with DSA‐Ph of matching LUMO/HOMO, the new TOTP produces blue device with luminance efficiency of 8.64 cd/A at 20 mA/cm 2 and 7.1 V with a CIE x, y color coordinate of [0.15, 0.28].