Proceedings of International Conference on Hybrid and Organic Photovoltaics (HOPV16)
Publication date: 28th March 2016
Transparent conducting oxides (TCOs) deposited on glass or flexible substrates are essential components in many electrochemical devices, such as electrochromic windows, solar cells, flat panel displays, sensors, and optical limiters. Tin doped In2O3 (ITO) and fluorine doped SnO2 (FTO) have become the most widely used TCOs in current industries as they have superior electrical and optical properties. Despite their popularity, these materials suffer from key issues including the high cost and scarcity of indium and difficulties in fabricating FTO at low temperatures. In an attempt to combat these issues, research has been focused on the development of novel TCO materials, low cost and low temperature thin film deposition methods and post-production processing technologies. In this study, novel TCO nanoparticles [i.e. Al, Ga co-doped ZnO (AGZO)] were synthesised via a microwave-assisted polyol synthesis route. This method brings significant cost improvements over standard production methods. Al and Ga dopant levels were systematically varied to find the optimum doping levels and the powders were pressed into pellets in order to measure the sheet resistance. The pellets were heat treated under microwave radiation to obtain a resistivity as low as 5.6 x 10-4 Ω.cm. Drop-casted AGZO thin films showed optical transmittance of 75% (over the entire visible region) and sheet resistance (<500Ω/â–¡) after post-synthesis heat-treatment. Both films and pellets were characterised by XRD and SEM analysis. In future studies, these films will be used to construct solar cells and the device parameters will be compared against similar devices made on standard TCO substrates.
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International Conference on Hybrid and Organic Photovoltaics
International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.
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