研究目的
Investigating the deposition of photo-catalytic titanium oxide (TiO2) film using Atmospheric Solution Precursor Plasma Spray (ASPPS) for the fabrication of low-cost photovoltaic devices for rural electrification in developing countries.
研究成果
The ASPPS technology equipped with high cooling efficiency vortex anode nozzle is suitable for the deposition of TiO2 film for the fabrication of low-cost photovoltaic devices for rural areas in developing countries. The photo-catalytic properties and strength of the film were confirmed, and the device generated an open circuit voltage of 146.7 mV.
研究不足
The conventional ASPPS using free jet plasma has disadvantages such as thermal damage of the substrate during film deposition and insufficient activation of the feedstock due to high flight speed of feedstock in the plasma jet.
1：Experimental Design and Method Selection:
Utilized ASPPS technology with N2-dominant Ar/N2 plasma working gas and ethanol-diluted titanium tetra-iso-butoxide (TTIB) as feedstock.
2：Sample Selection and Data Sources:
Deposited TiO2 film on grit-blasted 304 stainless steel plate substrates and ITO coated glass substrates.
3：List of Experimental Equipment and Materials:
Vortex generation anode nozzle operated at 1 kW, commercial air brush (Anest-Iwata MX2900) for feedstock feeding, X-ray diffraction for crystallinity confirmation, optical micrographs for surface morphology evaluation, micro screw gauge for film thickness measurement, pencil scratch tester for film strength evaluation.
4：Experimental Procedures and Operational Workflow:
Controlled deposition distances (40–80 mm) and fixed deposition time at 7 minutes.
5：Data Analysis Methods:
X-ray diffraction patterns analysis, methylene blue decolorization and surface wettability tests for photo-catalytic properties confirmation.
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