A thermally activated delayed blue fluorescent emitter with reversible externally tunable emission

A thermally activated delayed blue fluorescent emitter with reversible externally tunable emission

A thermally activated delayed fluorescent (TADF) material containing two meta carbazolyl groups on the phenyl ring of the benzoyl-4-pyridine moiety was prepared and its luminescence showed a colour change from blue to green by external stimuli. The organic-blue-light-emitting device using this TADF...

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Veröffentlicht in:Journal of materials chemistry. C, Materials for optical and electronic devices Materials for optical and electronic devices, 2016-01, Vol.4 (5), p.9-94
Hauptverfasser: Rajamalli, Pachaiyappan, Senthilkumar, Natarajan, Gandeepan, Parthasarathy, Ren-Wu, Chen-Zheng, Lin, Hao-Wu, Cheng, Chien-Hong
Format: Artikel
Sprache:eng
Schlagworte:
Activated
Colors (materials)
Colour
Dopants
Emission
Fluorescence
Luminescence
Stimuli
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Beschreibung
Zusammenfassung:A thermally activated delayed fluorescent (TADF) material containing two meta carbazolyl groups on the phenyl ring of the benzoyl-4-pyridine moiety was prepared and its luminescence showed a colour change from blue to green by external stimuli. The organic-blue-light-emitting device using this TADF dopant provided a high external quantum efficiency of 18.4%. A TADF material containing a benzoylpyridine core and two meta carbazolyl groups shows externally switchable emission in the solid states and a high external quantum efficiency of 18.4% when used as a blue dopant in OLEDs.
ISSN:2050-7526
2050-7534
DOI:10.1039/c5tc03943f