TY - JOUR
T1 - Significant Enhancement of Blue OLED Performances through Molecular Engineering of Pyrimidine-Based Emitter
AU - Nakao, Kohei
AU - Sasabe, Hisahiro
AU - Komatsu, Ryutaro
AU - Hayasaka, Yuya
AU - Ohsawa, Tatsuya
AU - Kido, Junji
N1 - Funding Information:
The authors greatly acknowledge the partial financial support from the Center of Innovation (COI) Program from Japan Science and Technology Agency, JST.
Publisher Copyright:
© 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
PY - 2017/3/17
Y1 - 2017/3/17
N2 - Although pyrimidine-based emitters are one of the most promising classes of compounds, a structure–property relationship for an effective molecular design strategy has not yet been elucidated. In this study, the authors develop three types of blue pyrimidine emitters for high-performance thermally activated delayed fluorescence (TADF) organic light-emitting devices (OLEDs). 2,4,6-triphenylpyrimidine is used as an acceptor, and tri- or penta-substituted acridine as a donor unit for the blue TADF emitters. The authors investigate the effects of the nitrogen position on the photophysical properties and OLED performances, and develop a blue device with a high external quantum efficiency close to 25%. The device performances are among the best so far for blue TADF OLEDs.
AB - Although pyrimidine-based emitters are one of the most promising classes of compounds, a structure–property relationship for an effective molecular design strategy has not yet been elucidated. In this study, the authors develop three types of blue pyrimidine emitters for high-performance thermally activated delayed fluorescence (TADF) organic light-emitting devices (OLEDs). 2,4,6-triphenylpyrimidine is used as an acceptor, and tri- or penta-substituted acridine as a donor unit for the blue TADF emitters. The authors investigate the effects of the nitrogen position on the photophysical properties and OLED performances, and develop a blue device with a high external quantum efficiency close to 25%. The device performances are among the best so far for blue TADF OLEDs.
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U2 - 10.1002/adom.201600843
DO - 10.1002/adom.201600843
M3 - Article
AN - SCOPUS:85008441763
SN - 2195-1071
VL - 5
JO - Advanced Optical Materials
JF - Advanced Optical Materials
IS - 6
M1 - 1600843
ER -