| Autor: |
Lee, Kyung Hyung, Jeon, Soon Ok, Chung, Yeon Sook, Numata, Masaki, Lee, Hasup, Lee, Eun Kyung, Kwon, Eun Suk, Sim, Myungsun, Choi, Hyeonho, Lee, Jun Yeob |
| Zdroj: |
Journal of Materials Chemistry C; 2/7/2020, Vol. 8 Issue 5, p1736-1745, 10p |
| Abstrakt: |
A molecular design platform of blue thermally activated delayed fluorescence (TADF) emitters to boost the external quantum efficiency and efficiency roll-off of blue TADF organic light-emitting diodes (OLEDs) was developed. A molecular structure hiring one or two excited state controlling subunits in the π-linker between a donor and an acceptor was employed. The subunit in the π-linker was a phenyl unit to precisely control the performances of TADF devices. It was described that the phenyl subunit simultaneously improved the external quantum efficiency and efficiency roll-off of TADF OLEDs. A high external quantum efficiency of 28.5% was demonstrated using the material design having two phenyl sub units. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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