Effect of triplet energy and transporting property of electron transporting material on iridium complex yellow phosphorescent organic light-emitting devices

2010 ◽  
Author(s):  
Wen Wen ◽  
Junsheng Yu ◽  
Sujie Chen ◽  
Chunhua Huang ◽  
Yadong Jiang
Keyword(s):  
Iridium Complex ◽  
Triplet Energy ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

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

2005 ◽  
Vol 871 ◽  
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%.

White organic light-emitting devices employing phosphorescent iridium complex as RGB dopants

2007 ◽  
Vol 22 (7) ◽  
pp. 728-731 ◽  
Author(s):  
Ruili Song ◽  
Yu Duan ◽  
Shufen Chen ◽  
Yi Zhao ◽  
Jingying Hou ◽  
...  
Keyword(s):  
Iridium Complex ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Highly efficient single-layer organic light-emitting devices using cationic iridium complex as host

2013 ◽  
Vol 14 (3) ◽  
pp. 744-753 ◽  
Author(s):  
Bing Chen ◽  
Yanhu Li ◽  
Yueying Chu ◽  
Anmin Zheng ◽  
Jiwen Feng ◽  
...  
Keyword(s):  
Single Layer ◽  
Iridium Complex ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Organic Light Emitting Devices

Highly Efficient and Unusual Structure White Organic Light-Emitting Devices Based on Phosphorescence Sensitized 5,6,11,12-Tetraphenylnaphthacene

2007 ◽  
Vol 364-366 ◽  
pp. 1095-1099
Author(s):  
Wen Long Jiang ◽  
Yu Duan ◽  
Hui Ying Li ◽  
De Chang Li ◽  
Gui Ying Ding
Keyword(s):  
Power Efficiency ◽  
Fluorescent Dye ◽  
Triplet Energy ◽  
Device Structure ◽  
Unusual Structure ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Organic Light Emitting Devices

Highly efficient and unusual structures white organic light-emitting devices were fabricated based on phosphorescence sensitized 5,6,11,12-tetraphenylnaphthacene. The device structure was ITO / NPB (30 nm)/CBP: 10% DPVBi (10 nm)/CBP (5 nm) /CBP:x% Ir(ppy)3 : y% rubrene (20 nm)/ CBP (5 nm)/ CBP: 10% DPVBi (10 nm)/BCP (10 nm)/ Alq3 (30 nm)/LiF(0.5 nm)/Al, where NPB is N,N '-bis- (1-naphthyl)- N,N ' –diphenyl -1, 1 '- biphenyl-4,4 '-diamine as a hole transporting layer, CBP 4,4,N,N’-dicarbazolebiphenyl as host,DPVBi is 4,4 '-bis(2,2 -diphenyl vinyl)-1,1 '-biphenyl as blue fluorescent dye，Rubrene is 5,6,11,12,-tetraphenylnaphthacene as fluorescent dye,Ir(ppy)3 is factris (2-phenylpyridine) iridium as phosphorescent sensitizer .BCP is 2,9-dimethyl-4,7-diphenyl-1,10-phenanthroline as hole-blocking layer, and Alq3 is tris(8- hydroxyquinoline) aluminum as an electron-transporting layer. In this device, phosphorescent emissive layer was sandwiched between two blue fluorescent doped ones. This architecture allowed for resonant energy transfer from both the host singlet and triplet energy levels that minimized exchange energy losses. Thus, a WOLED with a maximum luminous efficiency of 11.63 cd/A, a maximum power efficiency of 7.37 lm/W, a maximum luminance of 31770cd/m2, and Commission Internationale de L’Eclairage coordinates of (0.34.0.36) was achieved.

High Quantum Efficiency in Organic Light-Emitting Devices with Iridium-Complex as a Triplet Emissive Center

1999 ◽  
Vol 38 (Part 2, No. 12B) ◽  
pp. L1502-L1504 ◽  
Author(s):  
Tetsuo Tsutsui ◽  
Moon-Jae Yang ◽  
Masayuki Yahiro ◽  
Kenji Nakamura ◽  
Teruichi Watanabe ◽  
...  
Keyword(s):  
Quantum Efficiency ◽  
Iridium Complex ◽  
High Quantum Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
High Quantum ◽  
Organic Light ◽  
Organic Light Emitting Devices
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