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Deep-Blue and Hybrid-White Organic Light Emitting Diodes Based on a Twisting Carbazole-Benzofuro[2,3-b]Pyrazine Fluorescent Emitter.

ABSTRACT: A novel deep-blue fluorescent emitter was designed and synthesized. The external quantum efficiency (?EQE) of the blue-emitting, doped, organic light-emitting diode (OLED) was as high as 4.34%. The device also exhibited an excellent color purity with Commission Internationale de l'Eclairage (CIE) coordinates of x = 0.15 and y = 0.05. In addition, the triplet energy had a value of 2.7 eV, which is rare for an emitter with deep-blue emission, which makes it a preferred choice for high-performance white OLEDs. By optimizing the device architectures, the color of hybrid-white OLEDs could be tunable from warm white to cool white using the aforementioned material as a bifunctional material. That is, the ?EQE of the hybrid warm-white OLED is 20.1% with a CIE x and y of 0.46 and 0.48 and the ?EQE of the hybrid cool-white OLED is 9% with a CIE x and y of 0.34 and 0.33.

SUBMITTER: Huang CC

PROVIDER: S-EPMC6358809 | biostudies-other | 2019 Jan

REPOSITORIES: biostudies-other

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Deep-Blue and Hybrid-White Organic Light Emitting Diodes Based on a Twisting Carbazole-Benzofuro[2,3-b]Pyrazine Fluorescent Emitter.

Huang Chen-Chao CC Xue Miao-Miao MM Wu Fu-Peng FP Yuan Yi Y Liao Liang-Sheng LS Fung Man-Keung MK

Molecules (Basel, Switzerland) 20190119 2

A novel deep-blue fluorescent emitter was designed and synthesized. The external quantum efficiency (η<sub>EQE</sub>) of the blue-emitting, doped, organic light-emitting diode (OLED) was as high as 4.34%. The device also exhibited an excellent color purity with Commission Internationale de l'Eclairage (CIE) coordinates of x = 0.15 and y = 0.05. In addition, the triplet energy had a value of 2.7 eV, which is rare for an emitter with deep-blue emission, which makes it a preferred choice for high-p ...[more]

PMID: 30669461

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