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Solution‐Processable Carbazole‐Based Conjugated Dendritic Hosts for Power‐Efficient Blue‐Electrophosphorescent Devices
Author(s) -
Ding Junqiao,
Zhang Baohua,
Lü Jianhong,
Xie Zhiyuan,
Wang Lixiang,
Jing Xiabin,
Wang Fosong
Publication year - 2009
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200902328
Subject(s) - materials science , carbazole , conjugated system , dendrimer , optoelectronics , photochemistry , polymer , polymer chemistry , chemistry , composite material
A novel class of hosts suitable for solution processing has been developed based on a conjugated dendritic scaffold. By increasing the dendron generation, the highest occupied molecular orbital (HOMO) energy level can be tuned to facilitate hole injection, while the triplet energy remains at a high level, sufficient to host high‐energy‐triplet emitters. A power‐efficient blue‐electrophosphorescent device based on H2 (see figure) is presented.