Enhanced reliability by diamond-like carbon in single-layer organic light emitting diodes

Diamond-like carbon (DLC) layers with thickness of 1.5nm were incorporated, by pulsed laser deposition technique, in organic light emitting diodes (OLEDs), which consisted of a single light-emitting layer of polystyrene (PS) as the host material, but co-doped with N,N-diphenyl-N,N-bis(3-methylphenyl...

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Published inElectronics letters Vol. 42; no. 2; pp. 114 - 115
Main Authors YAP, S.-S, YANG, R.-B, YOW, H.-K, TOU, T.-Y
Format Journal Article
LanguageEnglish
Published London Institution of Electrical Engineers 19.01.2006
Subjects
Applied sciences
Electronics
Exact sciences and technology
Optoelectronic devices
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Microelectronic fabrication
Light emission
Brightness
Electron injection
Diamond like carbon
Organic light emitting diodes
Optoelectronic device
Pulsed laser deposition
Reliability
Thin film
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Summary:Diamond-like carbon (DLC) layers with thickness of 1.5nm were incorporated, by pulsed laser deposition technique, in organic light emitting diodes (OLEDs), which consisted of a single light-emitting layer of polystyrene (PS) as the host material, but co-doped with N,N-diphenyl-N,N-bis(3-methylphenyl)-1,1-biphenyl-4,4-diamine (TPD) and Tris-(8-hydroxyquinoline)-Aluminium (Alq3). For unstable ITO/doped-PS/Al OLEDs, which easily failed with poor light emission when the doped-PS layer used was too thin, the insertion of DLC in the ITO/doped-PS/DLC/Al structure restored the device operation to maximum operating voltage and hence full brightness.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
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ISSN:0013-5194
1350-911X
DOI:10.1049/el:20063947