title: Ultrapure Blue Thermally Activated Delayed Fluorescence Molecules: Efficient HOMO-LUMO Separation by the Multiple Resonance Effect.
abstract: 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.
authors: Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan.|PRESTO, Japan Science and Technology Agency, 5, Sanbancho, Chiyoda, Tokyo, 102-0075, Japan.
authors: Takuji
authors: T
authors: Hatakeyama
authors: JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba, 290-8551, Japan.
authors: Kazushi
authors: K
authors: Shiren
authors: Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan.
authors: Kiichi
authors: K
authors: Nakajima
authors: JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba, 290-8551, Japan.
authors: Shintaro
authors: S
authors: Nomura
authors: Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan.
authors: Soichiro
authors: S
authors: Nakatsuka
authors: Department of Chemistry, School of Science and Technology, Kwansei Gakuin University, 2-1 Gakuen, Sanda, Hyogo, 669-1337, Japan.
authors: Keisuke
authors: K
authors: Kinoshita
authors: JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba, 290-8551, Japan.
authors: Jingping
authors: J
authors: Ni
authors: JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba, 290-8551, Japan.
authors: Yohei
authors: Y
authors: Ono
authors: JNC Petrochemical Corporation, 5-1 Goi Kaigan, Ichihara, Chiba, 290-8551, Japan.
authors: Toshiaki
authors: T
authors: Ikuta
keywords: full-width at half-maximum; organic light-emitting diodes; organoboron; resonance effect; thermally activated delayed fluorescence