Analysis of the performances of organic light-emitting devices with a doped or an undoped polyaniline-poly(4-styrenesulfonate) hole-injection layer

2011 ◽  
Vol 122 (6) ◽  
pp. 3618-3623 ◽  
Author(s):  
Anna De Girolamo Del Mauro ◽  
Giuseppe Nenna ◽  
Valentina Bizzarro ◽  
Immacolata Angelica Grimaldi ◽  
Fulvia Villani ◽  
...  
Keyword(s):  
Hole Injection ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Hole Injection Layer ◽  
Organic Light ◽  
Organic Light Emitting Devices

Highly efficient organic light-emitting devices by introducing traps in the hole-injection layer

RSC Advances ◽  
2013 ◽  
Vol 3 (34) ◽  
pp. 14616 ◽  
Author(s):  
Wenyu Ji ◽  
Jing Wang ◽  
Qinghui Zeng ◽  
Zisheng Su ◽  
Zaicheng Sun
Keyword(s):  
Hole Injection ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Hole Injection Layer ◽  
Highly Efficient ◽  
Organic Light ◽  
Organic Light Emitting Devices

Improvement of Organic Light-emitting Devices by Controlling Deposition Temperature and Inclusion of Carbon Nanotubes

2006 ◽  
Vol 916 ◽  
Author(s):  
Guangfeng Wang ◽  
XiaoMing Tao ◽  
Wei Chen
Keyword(s):  
Carbon Nanotubes ◽  
Polyethylene Terephthalate ◽  
Hole Injection ◽  
Cathode Layer ◽  
Improve Performance ◽  
Light Emitting ◽  
Light Emitting Devices ◽  
Hole Injection Layer ◽  
Organic Light ◽  
Organic Light Emitting Devices

AbstractResearch was conducted to improve performance of organic light-emitting devices (OLEDs) on flexible polyethylene terephthalate (PET) substrates based on tris-(8-hydroxyquinoline)¨Caluminum (Alq3). Based on double layer structure, indium tin oxide(ITO)/N,N’Diphenyl-N-N’-di(m-tdyl) benzidine (TPD)/Alq3/Al, flexible OLEDs on polyethylene terephthalate (PET) substrates were fabricated by physical vapor deposition (PVD) method, with the Alq3 layer deposited at 90°C , 120°C and 150°C, respectively. It was found that the temperature had great effect on the surface morphology of Alq3 and the devices fabricated at high temperature (150°C) showed a higher external efficiency than those fabricated at low temperature (90°C , 120°C).Multi wall carbon nanotubes (MWCNTs) doping poly(3,4-ethylene dioxythiophene) (PEDOT) : poly(styrene sulfonate) (PSS) was used as hole injection layer to improve performance of OLEDs based on Alq3. PEDOT:PSS, which was doped by 0.2 wt.%, 0.4 wt.%, 0.6 wt.%, 0.8 wt.% and 1 wt.% MWCNTs, was coated on clean PET substrate with ITO by spin- coating method. The light-emitting layer (Alq3) and cathode layer (Al) were deposited by PVD method. It was found that the electroluminescence (EL) intensity of the OLEDs were highly improved by adopting MWCNTs doping PEDOT:PSS as hole injection layer. The luminous intensity obtained from the device with a concentration of 0.4 wt.% MWCNTs in the PEDOT:PSS layer was three folds as those adopted from device without MWCNTS doping in the PEDOT:PSS layer.

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