Ultrapure Blue Thermally Activated Delayed Fluorescence Molecules: Efficient HOMO-LUMO Separation by the Multiple Resonance Effect

Ultrapure blue‐fluorescent molecules based on thermally activated delayed fluorescence are developed. Organic light‐emitting diode (OLED) devices employing the new emitters exhibit a deep blue emission at 467 nm with a full‐width at half‐maximum of 28 nm, CIE coordinates of (0.12, 0.13), and an inte...

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Veröffentlicht in:	Advanced materials (Weinheim) 2016-04, Vol.28 (14), p.2777-2781
Hauptverfasser:	Hatakeyama, Takuji, Shiren, Kazushi, Nakajima, Kiichi, Nomura, Shintaro, Nakatsuka, Soichiro, Kinoshita, Keisuke, Ni, Jingping, Ono, Yohei, Ikuta, Toshiaki
Format:	Artikel
Sprache:	eng
Schlagworte:	Activated Devices Emission Fluorescence full-width at half-maximum Organic light emitting diodes organoboron Quantum efficiency resonance effect Separation thermally activated delayed fluorescence
Online-Zugang:	Volltext
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Zusammenfassung:	Ultrapure blue‐fluorescent molecules based on thermally activated delayed fluorescence are developed. Organic light‐emitting diode (OLED) devices employing the new emitters exhibit a deep blue emission at 467 nm with a full‐width at half‐maximum of 28 nm, CIE coordinates of (0.12, 0.13), and an internal quantum efficiency of ≈100%, which represent record‐setting performance for blue OLED devices.
ISSN:	0935-9648 1521-4095
DOI:	10.1002/adma.201505491