22.3: CbzTAZ Hosts in Blue Organic Light Emitting Devices Perform a High Current Efficiency more than 50 cd/A

2015 ◽  
Vol 46 (1) ◽  
pp. 320-322 ◽  
Author(s):  
Tien-Lung Chiu ◽  
Shin-Ren Chen ◽  
Yu-Shuan Hsieh ◽  
Man-Kit Leung ◽  
Po-Sheng Wang ◽  
...  
Keyword(s):  
Current Efficiency ◽  
High Current ◽  
High Current Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices

High performance gold(iii)-based white organic light-emitting devices with extremely small efficiency roll-off

2019 ◽  
Vol 7 (27) ◽  
pp. 8457-8464 ◽  
Author(s):  
Wai-Lung Cheung ◽  
Shiu-Lun Lai ◽  
Man-Chung Tang ◽  
Chin-Ho Lee ◽  
Mei-Yee Chan ◽  
...  
Keyword(s):  
Current Efficiency ◽  
High Performance ◽  
High Current ◽  
High Current Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
White Emission ◽  
Organic Light ◽  
Cie Coordinates ◽  
Organic Light Emitting Devices

WOLEDs based on Au-Y and FIrpic demonstrate high current efficiency with ∼4% efficiency roll-off and white emission with CIE coordinates of (0.33, 0.40).

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.

Improve the Efficiency of White Organic Light-Emitting Devices Using Double-Doped System

2010 ◽  
Vol 152-153 ◽  
pp. 687-690
Author(s):  
Gui Ying Ding ◽  
Wen Long Jiang ◽  
Guang De Wang ◽  
Qiang Han ◽  
Xi Chang
Keyword(s):  
Current Efficiency ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Maximum Current ◽  
Hole Transporting ◽  
White Oleds ◽  
Organic Light Emitting Devices ◽  
20 Nm ◽  
White Oled

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) .

Highly efficient bluish green organic light-emitting diodes of iridium(iii) complexes with low efficiency roll-off

2018 ◽  
Vol 47 (22) ◽  
pp. 7587-7593 ◽  
Author(s):  
Ning Su ◽  
Zheng-Guang Wu ◽  
You-Xuan Zheng
Keyword(s):  
Current Efficiency ◽  
External Quantum Efficiency ◽  
Light Emitting Diodes ◽  
Organic Light Emitting Diodes ◽  
High Current ◽  
High Current Efficiency ◽  
Light Emitting ◽  
Organic Light ◽  
Bluish Green ◽  
Low Efficiency

Two efficient bluish green iridium(iii) complexes were applied as emitters in the organic light-emitting diodes, which showing high current efficiency of 58.17 cd A−1 and external quantum efficiency of 25.33% with low efficiency roll-off.

Solution-processable, high luminance deep-blue organic light emitting devices based on novel naphthalene bridged bis-triphenylamine derivatives

2019 ◽  
Vol 7 (9) ◽  
pp. 2686-2698 ◽  
Author(s):  
Yuqin Li ◽  
Siming Gao ◽  
Nan Zhang ◽  
Xin Huang ◽  
Jinchang Tian ◽  
...  
Keyword(s):  
Current Efficiency ◽  
High Luminance ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Deep Blue ◽  
Organic Light ◽  
Maximum Current ◽  
Solution Processable ◽  
Organic Light Emitting Devices ◽  
Very High

The optimal device E exhibited a very high luminance of 10 407 cd m−2 and a maximum current efficiency of 7.80 cd A−1.

High performance solution-processed green phosphorescent organic light-emitting diodes with high current efficiency and long-term stability

2019 ◽  
Vol 7 (37) ◽  
pp. 11569-11580 ◽  
Author(s):  
Athithan Maheshwaran ◽  
Vijaya Gopalan Sree ◽  
Ho-Yeol Park ◽  
Woosum Cho ◽  
Hyein Kim ◽  
...  
Keyword(s):  
Current Efficiency ◽  
High Performance ◽  
Organic Light Emitting Diodes ◽  
High Current ◽  
Solution Processed ◽  
High Current Efficiency ◽  
Light Emitting ◽  
Long Term Stability ◽  
Organic Light

Highly efficient (D–π–A)-type host and green Ir(iii) complexes are introduced for solution-processed PHOLEDs that achieve high CE with considerably high EQE. The devices with symmetrical complex show more stable than those with asymmetrical complex.

Efficiency Enhancement of Tandem Organic Light-Emitting Devices Fabricated Utilizing an Organic BEDT-TTF and HAT-CN Charge Generation Layer

2015 ◽  
Vol 15 (10) ◽  
pp. 8070-8074
Author(s):  
Dae Hun Kim ◽  
Tae Whan Kim
Keyword(s):  
Current Efficiency ◽  
Operating Voltage ◽  
Efficiency Enhancement ◽  
Charge Generation ◽  
Electrical And Optical Properties ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Highest Occupied Molecular Orbital ◽  
Organic Light Emitting Devices

The electrical and optical properties of tandem organic light-emitting devices (OLEDs) fabricated utilizing an organic bis(ethylenedithio)-tetrathiafulvalene (BEDT-TTF) and 1,4,5,8,9,11- hexaazatriphenylenehexacarbonitrile (HAT-CN) charge generation layer (CGL) were investigated to enhance their efficiency. While the operating voltage of the tandem OLEDs with a BEDT-TTF and HAT-CN CGL at 50 mA/cm2 was 11.2 V lower than that of the tandem OLEDs without a CGL, the current efficiency of the tandem OLEDs with a BEDT-TTF and a HAT-CN CGL at 50 mA/cm2 was 0.8 cd/A higher than that of the tandem OLEDs without a CGL. An increase in the current efficiency and a decrease in the operating voltage of the tandem OLEDs with a BEDT-TTF and an HAT-CN CGL were attributed to the enhancement of the electron injection due to its existence in the highest occupied molecular orbital level of the BEDT-TTF between the HAT-CN and the tris-(8- hydroxyquinoline)aluminum layer.

Effect of CuTcPc Water Solution Surface Treatment on The Brightness and Current Efficiency of Organic Light Emitting Devices

2012 ◽  
Vol 33 (1) ◽  
pp. 88-92
Author(s):  
孔超 KONG Chao ◽  
徐征 XU Zheng ◽  
赵谡玲 ZHAO Su-ling ◽  
张福俊 ZHANG Fu-jun ◽  
闫光 YAN Guang ◽  
...  
Keyword(s):  
Surface Treatment ◽  
Current Efficiency ◽  
Water Solution ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Solution Surface ◽  
Organic Light Emitting Devices
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