Material alternative to ITO for transparent conductive electrode in flexible display and photovoltaic devices
| Autor: | Slavka Tzanova, Mariya Aleksandrova, Silvia Schintke, Valentin Videkov, Nikolay Kurtev |
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| Rok vydání: | 2015 |
| Předmět: |
chemistry.chemical_classification
Materials science business.industry Polymer Electroluminescence Condensed Matter Physics 7. Clean energy Atomic and Molecular Physics and Optics Surfaces Coatings and Films Electronic Optical and Magnetic Materials Indium tin oxide stomatognathic diseases PEDOT:PSS chemistry Flexible display Electrode OLED Optoelectronics Surface modification Electrical and Electronic Engineering business |
| Zdroj: | Microelectronic Engineering |
| ISSN: | 0167-9317 |
| DOI: | 10.1016/j.mee.2015.03.053 |
| Popis: | Display Omitted UV treatment of PET substrates, improving the adhesion of PEDOT:PSS anodes in OLED.Improvement of PEDOT:PSS conductivity and bending durability without film doping.Negligible resistance and transparency change of PEDOT:PSS films at multiple bends.Replacement of the conventional ITO electrode by PEDOT:PSS on UV treated PET.Cheap approach for PET surface modification and OLED performance improvement. The mechanical stability of poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) films spin coated onto a UV treated PET substrate was investigated. It was found that the UV exposure modifies the PET surface and improves the wetting conditions for PEDOT:PSS films deposition. The adhesion strength of PEDOT:PSS to UV treated PET surface was found to be 50N/cm2 versus 19N/cm2 to the untreated one. Furthermore, the resistance change of PEDOT:PSS on UV treated PET at 20,000 cycles of bending was measured to be only 3.8%. In contrast, the same polymeric films on untreated PET exhibit 8.7% resistance change and the conventional indium tin oxide (ITO) electrode 23.5%, which demonstrates the superior flexibility of the UV PET/PEDOT:PSS electrodes. The transparency of the produced coatings is 81%. Single layer organic light-emitting device with MEH-PPV electroluminescent polymer was successfully fabricated on UV PET/PEDOT:PSS. The electrical measurements indicate the possibility of using UV PET/PEDOT:PSS as a transparent electrode system, replacing ITO in the flexible optoelectronic devices. |
| Databáze: | OpenAIRE |
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