Preparation of Silver nanowire Films as an Electrode for Application in Polymer Solar Cells
Paper ID : 1365-MST2015-FULL
1zahra teymouri *, 2leila naji, 3sholeh kazemifard, 4sahar mahmodi
1AmirKabir University of Technology
2amirkabir university of technology
3Amirkabir university of technology
4amirkabir university of tehran
Metal nanostructures such as nanowires have attracted extensive attention due to their unique magnetic, optic, and electronic properties. Recently synthesis of silver nanowires have been attracted the scientists in various fields of catalysts, fabrication of different electronic devices such as touch panels, displays, and organic solar cells. In the past decade, Flexible polymer solar cells (PSCs) have attracted much attention due to their light weight, low fabrication costs and superior flexibility. Electrodes are key factors in PSCs to increase the efficiency of these devices. Indium Tin Oxide (ITO) is the most common electrode in polymer solar cells. Some problems such as, brittle nature, scarce indium and hard fabrication limited its applicability in flexible PSCs. Recently many studies look for appropriate alternative materials for ITO. Silver nanowire films are promising alternatives with transparency and resistivity close to ITO. Silver nanowires can be produced using different methods. However, solution-based polyol process has been considered as the most promising method due to simplicity, low cost and high yield. In the current work, firstly silver nanowires were synthesized by polyol method. The products were characterized by UV-Vis spectroscopy and scanning electron microscopy (SEM), to confirm synthesis of silver nanowire and investigating of their morphology respectively. Secondly, to preparation of transparent conductive films, different volumes of silver nanowire solution were spin coated on polyethylene terephthalate(PET) as a flexible substrate. Surface resistivity and transparency of whole of designed electrodes were evaluated after annealing process by multimeter and UV-VIS spectroscopy in 550 nm wavelength, respectively.
Silver nanowire, Conductive Film, Electrode, Polymer solar cell
Status : Paper Accepted (Oral Presentation)