Abstract
A new acceptor, benzoylphenyltriazine, was explored as a strong acceptor of thermally-activated delayed-fluorescent (TADF) emitters because of its high external quantum efficiency. The benzoylphenyltriazine acceptor was designed to have strong acceptor strength by modifying a well-known phenyltriazine acceptor with a weak electron-withdrawing benzoyl unit. The extra benzoyl unit strengthened the electron-accepting strength of the phenyltriazine acceptor, which improved the light emission performances of the TADF emitters. A BTrztCz molecule is a derivative of the benzoylphenyltriazine acceptor and was studied as a TADF emitter. The comparison of the BTrztCz emitter with a TrztCz emitter, derived from phenyltriazine based on the same donor, showed that benzoylphenyltriazine acceptor is superior to phenyltriazine for delayed-fluorescence characteristics. The quantum efficiency of the BTrztCz (21.4%) device is greater than that of the TrztCz (20.6%) device.
| Original language | English |
|---|---|
| Pages (from-to) | 226-232 |
| Number of pages | 7 |
| Journal | Journal of Industrial and Engineering Chemistry |
| Volume | 102 |
| DOIs | |
| State | Published - 25 Oct 2021 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 9 Industry, Innovation, and Infrastructure
Keywords
- Acceptor
- Benzoylphenyltriazine
- Delayed fluorescence
- Efficiency
- Organic light-emitting diodes
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