scholarly journals Encapsulation method developed for OLED devices mounted at laboratory

2021 ◽  
Vol 40 (1) ◽  
Author(s):  
Emerson Roberto Santos ◽  
Erik Yassuo Yuki ◽  
Wang Shu Hui
Keyword(s):  
Thin Film ◽  
Indium Tin Oxide ◽  
Electrical Resistance ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Simple Method ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Polymer Semiconductor ◽  
Encapsulation Process

A simple method with low cost of encapsulation for organic light emitting diode (OLED) devices mounted at laboratory was proposed to obtain considerable increase of the lifetime. In this study, it was used a capsule formed by: glass slide as substrate, a layer of polyvinyl acetate glue diluted in methyl alcohol, a layer of calcium oxide as secant and epoxy placed at the edges of capsule. The performance of this capsule was analyzed using a thin film of polymer semiconductor called as PEDOT:PSS, that is sensitive to moisture and oxygen from atmospheric air. The PEDOT:PSS thin layer was deposited between anode and cathode electrodes using commercial indium tin oxide (ITO) thin film deposited on glass substrate. The capsule was placed covering completely the PEDOT:PSS thin film, and the electrical resistance was measured by elapsed days. This result revealed lowest electrical resistance compared with other methods, showing also good performance as encapsulation process.

Criteria for ITO (indium–tin-oxide) thin film as the bottom electrode of an organic light emitting diode

2002 ◽  
Vol 411 (1) ◽  
pp. 12-16 ◽  
Author(s):  
Yoon-Heung Tak ◽  
Ki-Beom Kim ◽  
Hyoung-Guen Park ◽  
Kwang-Ho Lee ◽  
Jong-Ram Lee
Keyword(s):  
Thin Film ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Bottom Electrode ◽  
Light Emitting Diode ◽  
Oxide Thin Film ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light

Porphyrin doping of dichloride-bis(5,7-dichloroquinolin-8-olato)tin(IV) complex for electroluminescence

2013 ◽  
Vol 17 (05) ◽  
pp. 351-358 ◽  
Author(s):  
Mohammad Janghouri ◽  
Ezeddin Mohajerani ◽  
Mostafa M. Amini ◽  
Naser Safari
Keyword(s):  
Molecular Orbital ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Energy Levels ◽  
Orbital Energy ◽  
Homogeneous Layer ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Fundamental Structure ◽  
Organic Light

A method for obtaining red emission from an organic-light emitting diode has been developed by dissolving red and yellow dyes in a common solvent and thermally evaporating the mixture in a single furnace. Dichlorido-bis(5,7-dichloroquinolin-8-olato)tin(IV) complex ( Q2SnCl2 , Q = 5,7-dichloro-8-hydroxyquinoline) has been synthesized for using as a fluorescent material in organic light-emitting diodes (OLEDs). The electronic states HOMO (Highest Occupied Molecular Orbital)/LUMO (Lowest Occupied Molecular Orbital) energy levels explored by means of cyclic voltammetry measurements. A device with fundamental structure of ITO/PEDOT:PSS (55nm)/PVK (90nm)/ Q2SnCl2/Al (180nm) was fabricated and its electroluminescence performance at various thicknesses of light emitting layer (LEL) of Q2SnCl2 is reported. By following this step, an optimal thickness for the doping effect was also identified and explained. Finally a device with fundamental structure of ITO/PEDOT:PSS (55nm)/PVK (90nm)/meso-tetraphenylporphyrin (TPP): Q2SnCl2 (75nm)/ Al (180nm) was fabricated and its electroluminescence performance at various concentrations of dye has been investigated. It is shown that this new method is promising candidate for fabrication of low cost OLEDs at more homogeneous layer.

Effect of Silver Nanoparticles Deposited on Indium Tin Oxide by Plasma-Assisted Hot-Filament Evaporation on Phosphorescent Organic Light-Emitting Diode Performance

2021 ◽  
pp. 151280
Author(s):  
Abtisam Hasan Hamood Al-Masoodi ◽  
Noor Azrina Talik ◽  
Boon Tong Goh ◽  
Mohd Arif Mohd Sarjidan ◽  
Ahmed H. H. Al-Masoodi ◽  
...  
Keyword(s):  
Silver Nanoparticles ◽  
Tin Oxide ◽  
Indium Tin Oxide ◽  
Light Emitting Diode ◽  
Light Emitting ◽  
Organic Light Emitting Diode ◽  
Organic Light ◽  
Hot Filament
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