Preparation and characterization of the ITO surface and the Al/Alq3/ITO heterostructure for OLEDs

Andersson, T. G.; Andréasson, Måns; Klement, Uta; Lee, C. B.; Pujilaksono, Bagas; Uddin, Ashraf

doi:10.1016/j.mseb.2007.09.090

Cited by 9 publications

(5 citation statements)

References 28 publications

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“…532 eV reasonably arises from In-OH moieties, while carbonate species and/or adsorbed water are located at approx. 533 eV [43,44,46,48,[50][51][52]. As a matter of fact, the presence of the above species accounts for an O/In ratio appreciably higher than the stoichiometrically expected value.…”

Section: Sem Uv-vis and Xps Characterizationmentioning

confidence: 88%

RF-sputtering preparation of gold-nanoparticle-modified ITO electrodes for electrocatalytic applications

et al. 2011

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The preparation of gold-nanoparticle (AuNPs)-modified indium tin oxide (ITO) electrodes (AuNPs/ITO) was performed by radio-frequency (RF) sputtering from Ar plasmas at temperatures as low as 60 °C, tailoring the AuNP morphology and content as a function of the sole sputtering time. The latter parameter was varied from 5 to 20 min in order to investigate the influence of gold amount and distribution on the electrochemical performances of the resulting AuNPs/ITO systems. The electrodes were characterized using field emission-scanning electron microscopy (FE-SEM), UV-vis absorption and x-ray photoelectron spectroscopies (XPS); moreover variable scan rate cyclic voltammetry (CV) studies were performed to examine their electrochemical behavior. The electrocatalytic activity of the nanostructured AuNPs/ITO electrodes toward methanol oxidation was investigated and compared with a continuous gold film (Aufilm/ITO). The catalytic efficiency of the AuNPs/ITO systems was found to increase with the gold content and the AuNPs-support boundary region in the corresponding samples. For the longest sputtering time (i.e. 20 min) the performances of the nanostructured electrode were better than the Aufilm/ITO reference, despite the much lower catalyst amount. Furthermore, conversely from the AuNPs/ITO samples, in the Au(film)/ITO case the gold film displayed a poor adhesion to the substrate and the electrode could be used only for a limited number of electrochemical cycles.

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Section: Sem Uv-vis and Xps Characterizationmentioning

confidence: 88%

RF-sputtering preparation of gold-nanoparticle-modified ITO electrodes for electrocatalytic applications

et al. 2011

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“…After the photophysical properties were demonstrated, single-layer electroluminescent diodes were made. The diodes were built based on the ITO/active layer/Al scheme, with indium tin oxide [ 52 ] as a transparent electrode (provided by Merck KGaA, Darmstadt, Germany) and evaporation aluminum as a second electrode.…”

Section: Resultsmentioning

confidence: 99%

Investigations of the Optical and Thermal Properties of the Pyrazoloquinoline Derivatives and Their Application for OLED Design

et al. 2020

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In this study, the photo-optical properties of the series of new 1H-pyrazolo[3,4-b]quinoline derivatives were investigated. Pyrazoloquinoline studies were conducted to explain the electroluminescent effect in organic LEDs. Absorption and photoluminescence spectra for the materials under consideration were examined, and quantum chemical calculations were made. Differential scanning calorimetric and thermogravimetric measurements were carried out for the manufactured materials. The phase situation of the materials was determined, and glassy transitions were detected for three of the investigated materials. Degradation temperatures were obtained. Single-layer luminescent diodes based on the ITO/PEDOT:PSS/active layer/Al scheme were fabricated. Current–voltage and brightness–voltage characteristics of the diodes were determined, ignition voltage was calculated, and electroluminescence types were determined.

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“…The darker regions in the hexagons may thus even indicate the presence of discontinuities in the PEDOT film, which are not emissive because the drive voltage applied was not high enough to turn on the light without the PEDOT layer. 28,29 In any case, further improvement of the structures and optimization of the electropolymerization process will be required.…”

Section: Resultsmentioning

confidence: 99%

Fabrication of PEDOT–OTS-patterned ITO substrates

et al. 2010

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The fabrication of a poly(3,4-ethylenedioxythiophene) (PEDOT) pattern is demonstrated. As template, an n-octadecyltrichlorosilane (OTS) monolayer self-assembled on indium tin oxide (ITO) was structured by UV-ozone photolithography, resulting in an ITO-OTS patterned surface. The conducting properties of the ITO were utilized for the selective electropolymerization of 3,4-ethylenedioxythiophene (EDOT), whereby the electropolymerization was inhibited by the insulating OTS. Differently sized PEDOT-OTS patterns were obtained. The electronic properties of the patterns were finally evaluated in a test OLED device.

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Preparation and characterization of the ITO surface and the Al/Alq3/ITO heterostructure for OLEDs

Cited by 9 publications

References 28 publications

RF-sputtering preparation of gold-nanoparticle-modified ITO electrodes for electrocatalytic applications

RF-sputtering preparation of gold-nanoparticle-modified ITO electrodes for electrocatalytic applications

Investigations of the Optical and Thermal Properties of the Pyrazoloquinoline Derivatives and Their Application for OLED Design

Fabrication of PEDOT–OTS-patterned ITO substrates

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