A Single Molecule Electromer Emitting Compound with Enhanced Hole Transporting Property for Organic Light Emitting Devices

The doped and non-doped white Organic light-emitting devices (OLEDs) were fabricated, using strong yellow emitting and hole-transporting ability of TPAHQZn. When the white OLED is a double-doped structure, greatly enhanced the efficiency of the device. The double-doped white device were fabricated as follows: ITO/2T-NATA (17 nm)/ CBP: 30% TPAHQZn: 8% Ir(ppy)3 (25 nm)/ NPBX (15 nm)/BCP(8nm)/TPBi: 10% Ir(ppy)3 (15nm)/Alq3 (20 nm)/LiF (1.3 nm)/Al. The double-doped white OLEDs were obtained with Commission International de L’Eclairage coordinates of (0.29,0.28) at 17 V, the maximum current efficiency increaed four times that double-doped white device of 4.12cd/A(8V) than non-doped of 1.03 cd/A (10V) .

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Small molecular hole-transporting and emitting materials for hole-only green organic light-emitting devices

Dyes and Pigments ◽

10.1016/j.dyepig.2016.03.052 ◽

2016 ◽

Vol 131 ◽

pp. 41-48 ◽

Cited By ~ 14

Author(s):

Xicheng Liu ◽

Junfei Liang ◽

Jing You ◽

Lei Ying ◽

Yin Xiao ◽

...

Keyword(s):

Light Emitting ◽

Light Emitting Devices ◽

Organic Light ◽

Hole Transporting ◽

Organic Light Emitting Devices

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Highly Efficient Blue Phosphorescent Organic Light Emitting Devices with SrF2Doped Hole Transporting Layer

Chinese Journal of Luminescence ◽

10.3788/fgxb20113208.0803 ◽

2011 ◽

Vol 32 (8) ◽

pp. 803-808

Author(s):

廖亚琴 LIAO Ya-qin ◽

甘至宏 GAN Zhi-hong ◽

刘星元 LIU Xing-yuan

Keyword(s):

Light Emitting ◽

Light Emitting Devices ◽

Highly Efficient ◽

Organic Light ◽

Hole Transporting ◽

Organic Light Emitting Devices ◽

Blue Phosphorescent

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An efficient hole-transporting blue fluorophore 3,6-dipyrenyl-9-ethylcarbazole for undoped organic light-emitting devices

Synthetic Metals ◽

10.1016/j.synthmet.2011.12.030 ◽

2012 ◽

Vol 162 (5-6) ◽

pp. 415-418 ◽

Cited By ~ 10

Author(s):

Qing-Xiao Tong ◽

Shiu-Lun Lai ◽

Ming-Fai Lo ◽

Mei-Yee Chan ◽

Tsz-Wai Ng ◽

...

Keyword(s):

Light Emitting ◽

Light Emitting Devices ◽

Organic Light ◽

Hole Transporting ◽

Organic Light Emitting Devices

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Highly Efficient Multifunctional Phosphorescent Dendrimers Consisting of an Iridium-Complex Core and Charge-Transporting Dendrons for Organic Light-Emitting Devices

MRS Proceedings ◽

10.1557/proc-871-i2.8 ◽

2005 ◽

Vol 871 ◽

Cited By ~ 1

Author(s):

Toshimitsu Tsuzuki ◽

Nobuhiko Shirasawa ◽

Toshiyasu Suzuki ◽

Shizuo Tokito

Keyword(s):

First Generation ◽

Green Emission ◽

Iridium Complex ◽

Light Emitting ◽

Light Emitting Devices ◽

Organic Light ◽

Hole Transporting ◽

Complex Core ◽

Bright Green ◽

Organic Light Emitting Devices

AbstractWe report a novel class of emitting materials for use in the organic light-emitting devices (OLEDs): multifunctional phosphorescent dendrimers that have a phosphorescent core and have charge transporting dendrons. We have synthesized first-generation and second-generation dendrimers consisting of a fac-tris(2-phenylpyridine)iridium [Ir(ppy)3] core and hole transporting phenylcarbazole-based dendrons. Smooth amorphous films of these dendrimers were formed by spin-coating them from solutions. The OLEDs using the dendrimer exhibited bright green or yellowish-green emission from the Ir(ppy)3 core. The external quantum efficiency of the OLED using the mixture film of the first-generation dendrimer and an electron-transporting material was as high as 7.6%.

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P-165: Wet-Processable Triphenylamine Dendrimers as Hole-Transporting and Hole-Injection Materials for Organic Light-Emitting Devices

SID Symposium Digest of Technical Papers ◽

10.1889/1.2785432 ◽

2007 ◽

Vol 38 (1) ◽

pp. 816-819

Author(s):

Musubu Ichikawa ◽

Kumiko Hibino ◽

Norimasa Yokoyama ◽

Tetsuzo Miki ◽

Toshiki Koyama ◽

...

Keyword(s):

Hole Injection ◽

Light Emitting ◽

Light Emitting Devices ◽

Organic Light ◽

Hole Transporting ◽

Organic Light Emitting Devices ◽

Injection Materials

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Blue and White Organic Light-Emitting Devices Using 2,5-Diphenyl -1, 4-Distyrylbenzene with Two Trans-Double Bonds as a Blue Emitting Layer

Materials Science Forum ◽

10.4028/www.scientific.net/msf.475-479.1805 ◽

2005 ◽

Vol 475-479 ◽

pp. 1805-1808

Author(s):

Gang Cheng ◽

Zengqi Xie ◽

Ying Fang Zhang ◽

Yuguang Ma ◽

Shi Yong Liu

Keyword(s):

Tin Oxide ◽

Indium Tin Oxide ◽

Maximum Efficiency ◽

Double Bonds ◽

Yellow Light ◽

Light Emitting ◽

Light Emitting Devices ◽

Organic Light ◽

Hole Transporting ◽

Organic Light Emitting Devices

A novel derivative of oligo(phenylenvinylene) (OPV), 2,5-diphenyl -1, 4-distyrylbenzene with two trans-double bonds (trans-DPDSB), is used as a blue emitting material in blue and white organic light-emitting devices (OLEDs). Blue devices with a configuration of indium-tin oxide (ITO)/N,N´-diphenyl-N,N´-bis(1-naphthyl)-(1,1´-biphenyl)-4,4´-diamine (NPB)/ trans-DPDSB / tris (8-hydroxyquinoline) aluminum (Alq3)/LiF/Al are constructed, where NPB, Alq3 and trans-DPDSB are used as hole-transporting, electron-transporting and light-emitting layers, respectively. The color of emission is changed from blue-green to pure blue when the trans-DPDSB layer is thicker. By inserting an ultrathin 5,6,11,12-tetraphenylnaphthacene (rubrene) yellow light-emitting layer between the Alq3 and trans-DPDSB layers, white OLEDs are obtained. The maximum efficiency and luminance of the blue and white devices are 1.2, 3.0 cd/A, and 1400, 7000 cd/m2, respectively.

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