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Synthesis of Multiaryl‐Substituted Pyridine Derivatives and Applications in Non‐doped Deep‐Blue OLEDs as Electron‐Transporting Layer with High Hole‐Blocking Ability
Author(s) -
Li Na,
Wang Pengfei,
Lai ShiuLun,
Liu Weimin,
Lee ChunSing,
Lee ShuitTong,
Liu Zengtao
Publication year - 2010
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.200902430
Subject(s) - oled , deep blue , materials science , doping , ntsc , blocking (statistics) , pyridine , optoelectronics , electron , layer (electronics) , nanotechnology , computer science , photochemistry , organic chemistry , telecommunications , physics , chemistry , high definition television , computer network , quantum mechanics
Two multiaryl‐substituted pyridine derivatives , applied as electron transport materials (ETMs; see figure) with good hole‐ blocking ability in high‐performance deep‐blue OLEDs, are characterized. The maximum current efficiencies of the devices based on the new compounds are over 70% higher than previously reported devices using traditional ETMs instead. The CIE coordinates of the devices based on the new compounds are close to the NTSC standards of (0.14, 0.08) for blue emission.