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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Sekkat, Abderrahime
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (15/15 displayed)
- 2024Catalytic atomic layer deposition of amorphous alumina–silica thin films on carbon microfiberscitations
- 2024Silver nanowire networks coated with a few nanometer thick aluminum nitride films for ultra-transparent and robust heating applicationscitations
- 2024Comparative analysis of structural characteristics and thermal insulation properties of ZrO2 thin films deposited via chemical and physical vapor phase processescitations
- 2024Towards enhanced transparent conductive nanocomposites based on metallic nanowire networks coated with metal oxides: a brief reviewcitations
- 2023Single-Step PEDOT deposition by oxidative chemical vapor deposition for opto-electronic applications
- 2023Single-Step PEDOT Deposition by oCVD for ITO-Free Deep Blue OLEDscitations
- 2023Single-Step PEDOT Deposition by oCVD for ITO-Free Deep Blue OLEDscitations
- 2023Amorphous Alumina Thin Films Deposited on Carbon Microfibers As Interface Layer for Thermal Oxidation Barrierscitations
- 2023Flexible, transparent electrodes based on AgNW/ZnO nanocomposites for localized heating of lab-on-chip devices
- 2022Atmospheric atomic layer deposition of SnO 2 thin films with Tin(II) acetylacetonate and watercitations
- 2022Stable Flexible Transparent Electrodes for Localized Heating of Lab‐on‐a‐Chip Devicescitations
- 2021Open-air printing of Cu2O thin films with high hole mobility for semitransparent solar harvesterscitations
- 2021Open-air printing of Cu2O thin films with high hole mobility for semitransparent solar harvesterscitations
- 2021Flexible, transparent electrodes based on AgNW/ZnO nanocomposites for localized heating of lab-on-chip devices
- 2020Efficient, stable and flexible transparent electrode based on zinc oxide/silver nanowires/cellulose nanofibrils nanocomposites
Places of action
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article
Single-Step PEDOT Deposition by oCVD for ITO-Free Deep Blue OLEDs
Abstract
Organic light-emitting diodes (OLEDs) are emerging technologies for potential lighting and display applications. Transparent conductive electrodes (TCEs) play a crucial role in enabling the functionality and increased performance of these particular devices. Despite their widespread use, indium tin oxide (ITO) thin films have several significant drawbacks, including material scarcity, high costs associated with both materials and fabrication processes, and limited flexibility. To address these issues, we thoroughly investigate the deposition of poly(3,4-ethylenedioxythiophene) (PEDOT) thin films as a promising alternative to ITO using a single-step and dry method named oxidative chemical vapor deposition (oCVD). The impact of increasing the substrate temperature from 110 to 190 °C on the film’s structure and properties was revealed with an increase in the film conductivity to over 1600 S/cm at 170 °C and a total transmittance of 97% in the visible range. This increase was attributed to a change in the molecular structure of the conjugated polymer from benzoid to quinoid as revealed by Raman and FTIR measurements. The XPS results demonstrated an increase in the doping ratio with Cl-containing species and a reduction of impurities. GIXRD, HR-TEM, and AFM measurements indicated a smooth surface and a highly face-on orientation for all temperatures. The optimized TCE layers were successfully integrated into deep blue OLED devices emitting at 436 nm with stable color Commission Internationale de l’Energie (CIE) coordinates of (0.15, 0.08) under variation of the applied current. A satisfactory performance (72.1 cd/m2 and 0.86 W/sr·m2 at 10 mA cm–2) and an external quantum efficiency (EQE) of 1.04% were achieved. These results are quite promising, as OLEDs based on PEDOT as a TCE have demonstrated slightly better output performance in terms of luminance and radiance, with an increase in EQE by a factor of 1.7, compared to the reference device based on ITO.