Abstract
The fabrication and application of polystyrene (PS)-assisted ITO nanowire (NW) networks are reported. The ITO-NW networks are fabricated by means of electron-beam deposition via PS. This method has the advantages of low-temperature (~300 °C), low-cost, facile and efficient operation. The growth mechanism of PS-assisted ITO NWs was analyzed in detail, and the morphology of which could be regulated by the size of PS. X-ray diffraction and high-resolution transmission electron microscope show that the ITO NWs are close to an integral cubic lattice. The transmittance of ITO-NW networks layer is above 90% after 400 nm and the sheet resistance is ~200 Ω/□. When they applied on vertical blue and green LEDs, the light output power all has been improved ~30%. And, the resistive switching behaviors of ITO-NWs were measured and analyzed in Ag/ITO-NW networks/Al capacitor. The application of ITO-NW networks on special morphological devices was discussed. The PS-assisted ITO-NW networks show a strong researching and application value.
Highlights
Transparent conductive film (TCF) is a kind of thin film which can conduct electricity and have high transparency in the visible range
ITO film and ITO-NW networks were both fabricated on quartz substrate, and annealed for 5 min at 300 °C under the nitrogen ambient
The growth mechanism of PS-assisted ITO NWs was analyzed in detail
Summary
Transparent conductive film (TCF) is a kind of thin film which can conduct electricity and have high transparency in the visible range. Nowadays, doped-ZnO materials (such as ZnO doped with Aluminum (AZO)[6], Gallium (GZO)[7,8,9,10], Indium (IZO)[11], Magnesium[12, 13], and gold[14, 15], etc.) have been researched deeply, and made some breakthroughs in the application of flexible devices[16,17,18] Due to their limitations of the preparation process and the stability of the resistivity, the main material of TCF is still ITO at this stage. The ITO-NW networks are fabricated by means of electron-beam deposition via polystyrene (PS) This method has the advantages of low-temperature, low-cost, facile and efficient operation[37], and the PS spheres are prepared on substrate by www.nature.com/scientificreports/. The ITO-NW networks can be used on some devices with special morphologies (such as pyramids, holes, etc.), which further extends the application
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