Highly Efficient Nondoped Blue Organic Light-Emitting Diodes Based on Anthracene-Triphenylamine Derivatives

Tao, Silu; Zhou, Yang; Lee, Chun‐Sing; Lee, Shuit‐Tong; Huang, Da; Zhang, Shun

doi:10.1021/jp803957p

Cited by 123 publications

(68 citation statements)

References 27 publications

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“…The external quantum efficiency (EQE) of the devices is calculated by the reported method. 20 In the paper, 4,4 0 ,4 00 -Tris(carbazol-9-yl)-triphenylamine (TCTA) and 1,3,5-Tri[(3-pyridyl)-phen-3-yl]benzene (TmPyPB) were mixed and utilized as the co-host for the emission layer (EML) and NAA was reported as a good fluorophore by our group, 21 which was used as fluorescent dopant. For full-color display and white-light illumination, the efficiency of blue fluorescent devices should reach up to 4-5 cd/A and the CIE coordinates should locate at (0.14-0.16, 0.14-0.16).…”

mentioning

confidence: 99%

Efficient fluorescence/phosphorescence white organic light-emitting diodes with ultra high color stability and mild efficiency roll-off

Tao

Huang

et al. 2015

Applied Physics Letters

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Efficient fluorescence/phosphorescence hybrid white organic light-emitting diodes (OLEDs) with single doped co-host structure have been fabricated. Device using 9-Naphthyl-10 -(4-triphenylamine)anthrancene as the fluorescent dopant and Ir(ppy)3 and Ir(2-phq)3 as the green and orange phosphorescent dopants show the luminous efficiency of 12.4% (17.6 lm/W, 27.5 cd/A) at 1000 cd/m2. Most important to note that the efficiency-brightness roll-off of the device was very mild. With the brightness rising up to 5000 and 10 000 cd/m2, the efficiency could be kept at 11.8% (14.0 lm/W, 26.5 cd/A) and 11.0% (11.8 lm/W, 25.0 cd/A). The Commission Internationale de L'Eclairage (CIE) coordinates and color rending index (CRI) were measured to be (0.45, 0.48) and 65, respectively, and remained the same in a large range of brightness (1000–10 000 cd/m2), which is scarce in the reported white OLEDs. The performance of the device at high luminance (5000 and 10 000 cd/m2) was among the best reported results including fluorescence/phosphorescence hybrid and all-phosphorescent white OLEDs. Moreover, the CRI of the white OLED can be improved to 83 by using a yellow-green emitter (Ir(ppy)2bop) in the device.

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confidence: 99%

Efficient fluorescence/phosphorescence white organic light-emitting diodes with ultra high color stability and mild efficiency roll-off

Tao

Huang

et al. 2015

Applied Physics Letters

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“…In contrast to the symmetric DPA structure of emitters 1 and 2, Tao et al 33 developed an asymmetric bulky DPA derivative of emitter 3 (PLQY ¼ 0.48 for solution) by introducing different bulky end groups, i.e., pyrene and triphenylamine moieties at the 9-and 10-positions of the anthracene core (see Fig. 1).…”

Section: Polycyclic-type Emittersmentioning

confidence: 99%

Recent progress in the use of fluorescent and phosphorescent organic compounds for organic light-emitting diode lighting

et al. 2015

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Abstract. Organic light-emitting diodes (OLEDs) have attracted considerable attention in both academic and industrial circles. Certain properties of OLEDs make them especially attractive in the lighting market, including area emission characteristics not found in other existing light sources, environmentally friendly efficient use of energy, large area, ultra-light weight, and ultrathin shape. Fluorescent and phosphorescent materials that are being applied to white OLEDs have been categorized, and the chemical structures and device performances of the important blue, orange, and red light-emitting materials have been summarized. Such a systematic classification and understanding of the materials that have already been reported can aid the development and study of new light-emitting materials through quantitative and qualitative approaches.

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“…Tao et al designed anthracene derivatives with triphenylamine in side group to help hole injection (see Figure 4). The compounds, which is anthracene-triphenylamine derivative exhibit strong blue emission with 유기발광 다이오드(OLED) 및 이를 위한 청색형광체 [23].…”

Section: Research Highlight In Blue Fluorescent Emittersmentioning

confidence: 99%

Recent Research Highlights in Blue Fluorescent Emitters in Organic Light-Emitting Diodes

Kim¹,

Seo²,

Cho³

2014

Applied Chemistry for Engineering

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Organic light emitting diodes (OLEDs) received much attention from both academia and industry as the next-generation flat panel displays. However, to produce high quality OLEDs, there are still many challenges to overcome. Especially, in full color OLEDs, the intrinsic wide band gap of the blue emitting materials results in inferior efficiency compared to those of green and red emitting materials. Therefore, extensive research efforts have been devoted to develop efficient blue emitting materials. This review briefly summarizes the basics of OLEDs and introduces highlights of research efforts in blue-emitting materials.

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Highly Efficient Nondoped Blue Organic Light-Emitting Diodes Based on Anthracene-Triphenylamine Derivatives

Cited by 123 publications

References 27 publications

Efficient fluorescence/phosphorescence white organic light-emitting diodes with ultra high color stability and mild efficiency roll-off

Efficient fluorescence/phosphorescence white organic light-emitting diodes with ultra high color stability and mild efficiency roll-off

Recent progress in the use of fluorescent and phosphorescent organic compounds for organic light-emitting diode lighting

Recent Research Highlights in Blue Fluorescent Emitters in Organic Light-Emitting Diodes

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