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Mononuclear Silver Complexes for Efficient Solution and Vacuum‐Processed OLEDs
Author(s) -
Romanov Alexander S.,
Jones Saul T. E.,
Yang Le,
Conaghan Patrick J.,
Di Dawei,
Linnolahti Mikko,
Credgington Dan,
Bochmann Manfred
Publication year - 2018
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201801347
Subject(s) - carbene , electroluminescence , materials science , photochemistry , photoluminescence , oled , excited state , singlet state , quantum efficiency , alkyl , microsecond , molecule , acceptor , optoelectronics , nanotechnology , atomic physics , chemistry , optics , organic chemistry , catalysis , condensed matter physics , physics , layer (electronics)
Carbene metal amides are a new class of highly efficient light‐emitting molecules based on a linear donor–metal–acceptor geometry. Here the synthesis, structure, and photo‐ and electroluminescence of carbene silver carbazolato complexes, ( Ad L)Ag(Cz) [ Ad L = adamantyl‐substituted cyclic (alkyl)(amino)carbene; Cz = carbazolate ( 1 ) and 3,6‐ t Bu 2 Cz ( 2 )], are reported. They display green emission with photoluminescence quantum yields of up to 74%. Efficient mixing of triplet and singlet excited states is observed, with sub‐microsecond thermally activated radiative triplet lifetimes. These complexes provide prototype organic light‐emitting diodes based exclusively on silver emitters, with external quantum efficiencies of up to 14%.