Fourfold power efficiency improvement in organic light-emitting devices using an embedded nanocomposite scattering layer

2012 ◽  
Vol 13 (6) ◽  
pp. 1073-1080 ◽  
Author(s):  
Chih-Hao Chang ◽  
Kuo-Yan Chang ◽  
Yu-Jhong Lo ◽  
Shu-Jing Chang ◽  
Hsin-Hua Chang
Keyword(s):  
Power Efficiency ◽  
Efficiency Improvement ◽  
Scattering Layer ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

Dramatic efficiency improvement in single-layer orange phosphorescent organic light-emitting devices with suppressed efficiency roll-off

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 55017-55021 ◽  
Author(s):  
Liangmei Zuo ◽  
Guangguang Han ◽  
Ren Sheng ◽  
Kaiwen Xue ◽  
Yu Duan ◽  
...  
Keyword(s):  
Current Efficiency ◽  
Single Layer ◽  
Efficiency Improvement ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
A Current

We have successfully demonstrated efficient single-layer organic light-emitting devices (OLEDs) with a current efficiency of 31.38 cd A−1.

High-Efficient Non-Doped Type White Organic Light-Emitting Devices Using an Electron/Exciton Blocker

2005 ◽  
Vol 475-479 ◽  
pp. 1799-1804
Author(s):  
Wenfa Xie ◽  
Shi Yong Liu
Keyword(s):  
Power Efficiency ◽  
Maximum Power ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
White Region ◽  
Organic Light ◽  
High Efficient ◽  
Organic Electroluminescent ◽  
Cie Coordinates ◽  
Organic Light Emitting Devices

Non-doped type white organic electroluminescent (EL) devices have the following structure ITO/m-MTDATA (30nm) /NPB (20-dnm) /rubrene (0.1nm) /NPB (dnm) /DPVBi (20nm) /TPBi (20nm) /Alq (10nm) /LiF/Al were fabricated. The EL spectrum of the devices are dependent on the d and when d=3, the CIE coordinates of the device were well within the white region for voltage raging from 3V to 15V. This device has a luminance of 18950cd/m2 at 15V and maximum power efficiency of 5.65cd/A at 6V.

An ambipolar phosphine oxide-based host for high power efficiency blue phosphorescent organic light emitting devices

2009 ◽  
Vol 94 (22) ◽  
pp. 223304 ◽  
Author(s):  
Evgueni Polikarpov ◽  
James S. Swensen ◽  
Neetu Chopra ◽  
Franky So ◽  
Asanga B. Padmaperuma
Keyword(s):  
Phosphine Oxide ◽  
High Power ◽  
Power Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
Blue Phosphorescent ◽  
High Power Efficiency

Enhancement of hole-injection and power efficiency of organic light emitting devices using an ultra-thin ZnO buffer layer

2009 ◽  
Vol 479 (1-2) ◽  
pp. 520-524 ◽  
Author(s):  
Hsin-Hsuan Huang ◽  
Sheng-Yuan Chu ◽  
Po-Ching Kao ◽  
Yung-Chen Chen ◽  
Ming-Ru Yang ◽  
...  
Keyword(s):  
Buffer Layer ◽  
Power Efficiency ◽  
Hole Injection ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
Zno Buffer Layer

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.

scholarly journals Patterned microlens array for efficiency improvement of small-pixelated organic light-emitting devices

2008 ◽  
Vol 16 (15) ◽  
pp. 11044 ◽  
Author(s):  
Hoang-Yan Lin ◽  
Yu-Hsuan Ho ◽  
Juin-Haw Lee ◽  
Kuan-Yu Chen ◽  
Jheng-Hao Fang ◽  
...  
Keyword(s):  
Microlens Array ◽  
Efficiency Improvement ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices
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