Efficient inverted organic light-emitting devices using a charge-generation unit as electron-injection layers

2021 ◽  
pp. 106202
Author(s):  
Jiong Wang ◽  
Mengke Zhang ◽  
Yaqi Zhang ◽  
Jiawei Fu ◽  
Yue Qin ◽  
...  
Keyword(s):  
Electron Injection ◽  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
A Charge ◽  
Generation Unit

Inverted organic light-emitting devices using a charge-generation unit as an electron injector

2020 ◽  
Vol 76 ◽  
pp. 105445
Author(s):  
Ruiqing Li ◽  
Jiong Wang ◽  
Yue Qin ◽  
Chenyang Liu ◽  
Yuzhu Wang ◽  
...  
Keyword(s):  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Electron Injector ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
A Charge ◽  
Generation Unit

Highly efficient tandem organic light-emitting devices employing an easily fabricated charge generation unit

2018 ◽  
Vol 11 (2) ◽  
pp. 022101 ◽  
Author(s):  
Huishan Yang ◽  
Yaoyao Yu ◽  
Lishuang Wu ◽  
Biao Qu ◽  
Wenyan Lin ◽  
...  
Keyword(s):  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
Generation Unit

Efficiency Enhancement of Tandem Organic Light-Emitting Devices Fabricated Utilizing an 1,4,5,8,9,11-Hexaazatriphenylene-Hexacarbonitrile Charge-Generation Layer

2015 ◽  
Vol 15 (10) ◽  
pp. 7717-7721
Author(s):  
Young Pyo Jeon ◽  
Tae Whan Kim
Keyword(s):  
Current Density ◽  
Efficiency Enhancement ◽  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Maximum Current ◽  
Organic Light Emitting Devices ◽  
Generation Mechanisms ◽  
A Charge

The electrical and the optical properties of tandem organic light-emitting devices (OLEDs) with stacked electroluminescence units were investigated to clarify the charge-generation mechanisms due to the existence of a charge-generation layer (CGL). The current density of the current limited devices with an 1,4,5,8,9,11-hexaazatriphenylene-hexacarbonitrile (HAT-CN) CGL was 35% higher than that of devices with a tungsten-oxide (WO3) CGL. The maximum current density of the current limited devices with a HAT-CN CGL was as high as 259 mA/cm2. The brightness of the tandem OLEDs with a HAT-CN CGL was 15% higher than that of the tandem OLEDs with a WO3 CGL due to an increase in the current density. The charge-generation mechanisms of tandem OLEDs with a CGL were described on the basis of the experimental results.

Highly efficient tandem organic light-emitting devices adopting a nondoped charge-generation unit and ultrathin emitting layers

2018 ◽  
Vol 53 ◽  
pp. 353-360 ◽  
Author(s):  
Xinwen Zhang ◽  
Mengke Zhang ◽  
Mengjiao Liu ◽  
Yuehua Chen ◽  
Jiong Wang ◽  
...  
Keyword(s):  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Highly Efficient ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
Generation Unit

White Stacked Electrophosphorescent Organic Light-Emitting Devices Employing MoO3 as a Charge-Generation Layer

2006 ◽  
Vol 18 (3) ◽  
pp. 339-342 ◽  
Author(s):  
H. Kanno ◽  
R. J. Holmes ◽  
Y. Sun ◽  
S. Kena-Cohen ◽  
S. R. Forrest
Keyword(s):  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices ◽  
A Charge

Efficiency Enhancement Mechanisms in Tandem Organic Light-Emitting Devices Fabricated Utilizing a Mixed LCV: HAT-CN Layer Embedded Into a Charge Generation Layer

2015 ◽  
Vol 15 (10) ◽  
pp. 8191-8194
Author(s):  
Eun Im Koh ◽  
Dae Hun Kim ◽  
Tae Whan Kim
Keyword(s):  
Current Efficiency ◽  
Mixed Layer ◽  
Operating Voltage ◽  
Charge Generation ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
The Matrix ◽  
Organic Light Emitting Devices ◽  
A Charge

Tandem organic light-emitting devices (OLEDs) with a mixed organic n-type 4,4′,4″-methylidynetris (n,n-dimethylaniline) and organic p-type 1,4,5,8,9,11-hexaazatriphenylenehexacarbonitrile layer embedded into a charge generation layer (CGL) were fabricated to enhance their current efficiency. The operating voltage of the tandem OLEDs with a mixed layer at 10 mA/cm2 was 1 V lower than that of the tandem OLEDs without a mixed layer due to the electrons generated from the mixed layer. The matrix-assisted laser desorption-ionization-time-of-flight mass spectrometer spectra clarified the charge generation behaviors of the mixed layer into the CGL. The current efficiency of the tandem OLEDs with a mixed layer at 10 mA/cm2 was 48.2 cd/A, which was much larger than that without a mixed layer. The increase in the current efficiency for the tandem OLEDs was attributed to the enhancement of the electron injection efficiency in a CGL resulting from the insertion of the mixed layer.

A Series of Lithium Pyridyl Phenolate Complexes with a Pendant Pyridyl Group for Electron-Injection Layers in Organic Light-Emitting Devices

2017 ◽  
Vol 9 (46) ◽  
pp. 40541-40548 ◽  
Author(s):  
Satoru Ohisa ◽  
Taichiro Karasawa ◽  
Yuichiro Watanabe ◽  
Tatsuya Ohsawa ◽  
Yong-Jin Pu ◽  
...  
Keyword(s):  
Electron Injection ◽  
Pyridyl Group ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Organic Light ◽  
Organic Light Emitting Devices
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