Carbazole Derivative Based Near Ultraviolet Organic Light Emitting Diode with ZnMgO:Al Anode Layer

2013 ◽  
Vol 200 ◽  
pp. 45-49 ◽  
Author(s):  
Grzegorz Łuka ◽  
Dmytro Volyniuk ◽  
Ausra Tomkeviciene ◽  
Jurate Simokaitiene ◽  
Juozas V. Grazulevicius ◽  
...  

We demonstrate the fabrication and properties of an near ultraviolet organic light emitting diode (UV OLED) that contains 2,7-di(9-carbazolyl)-9-(2-ethylhexyl)carbazole organic emitting layer and aluminum-doped magnesium zinc oxide (ZnMgO:Al) layer as transparent electrode. The obtained ZnMgO:Al layer is transparent for the wavelengths longer than 325 nm and has low resistivity of the order of 10-3 Ωcm. The UV OLED device turns on at the applied voltage of 9 V.

2020 ◽  
Vol 263 ◽  
pp. 116368
Author(s):  
Shunya Yan ◽  
Mengming Qin ◽  
Chengmei Shen ◽  
Lianbin Niu ◽  
Yong Zhang

2020 ◽  
Vol 704 ◽  
pp. 137999
Author(s):  
Masashi Ohara ◽  
Mai Ugajin ◽  
Takayuki Kiba ◽  
Midori Kawamura ◽  
Yoshio Abe ◽  
...  

Nanomaterials ◽  
2021 ◽  
Vol 11 (11) ◽  
pp. 2869
Author(s):  
Chan Young Park ◽  
Byoungdeog Choi

A top emitting organic light-emitting diode (OLED) device with pure aluminum (Al) anode for high-resolution microdisplays was proposed and fabricated. The low work function of the Al anode, even with a native oxide formed on the Al anode surface, increases the energy barrier of the interface between the anode and hole injection layer, and has poor hole-injection properties, which causes the low efficiency of the device. To enhance the hole-injection characteristics of the Al anode, we applied hexaazatriphenylene hexacarbonitrile (HATCN) as the hole-injection layer material. The proposed OLED device with a pure Al anode and native oxide on the anode surface improved efficiency by up to 35 cd/A at 1000 nit, which is 78% of the level of normal OLEDs with indium tin oxide (ITO) anode.


2010 ◽  
Vol 108 (6) ◽  
pp. 064518 ◽  
Author(s):  
G. Luka ◽  
P. Stakhira ◽  
V. Cherpak ◽  
D. Volynyuk ◽  
Z. Hotra ◽  
...  

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