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A new molecular design based on hybridized local and charge transfer fluorescence for highly efficient (>6%) deep-blue organic light emitting diodes
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A new molecular design based on hybridized local and charge transfer fluorescence for highly efficient (>6%) deep-blue organic light emitting diodes

Rajendra Kumar Konidena, K.R. Justin Thomas, Deepak Kumar Dubey, Snehasis Sahoo 和 Jwo-Huei Jou
Chemical Communications, 卷.53(86), 頁碼.11802-11805
2017
DOI: https://doi.org/10.1039/c7cc07139f

摘要

Catalysis Electronic Optical and Magnetic Materials Ceramics and Composites Chemistry (all) Surfaces Coatings and Films Metals and Alloys Materials Chemistry
A deep-blue emitter was developed by modifying carbazole nuclear positions C2 & C7 with a triphenylamine donor and C3 & C6 with a cyano acceptor. The molecular design features cross-conjugated localized and charge transfer chromophores which results in a hybridized local charge transfer (HLCT) excited state. An organic light emitting diode (OLED) using this material exhibited high external quantum efficiency (6.5%) with excellent color saturation (CIEy ∼ 0.06) and small full-width at half maximum (48 nm).

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