Surface Texturing of TiO2 Film by Mist Deposition of TiO2 Nanoparticles

Gang Qin,Akira Watanabe

doi:10.1007/bf03353740

Gang Qin, Akira Watanabe

Open Access

https://doi.org/10.1007/bf03353740

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Abstract

Abstract Unique and various microstructures of titanium oxide (TiO2) film including macroporous structure, chromatic veins and rings, have been easily fabricated by mist deposition method on silicon substrate with mild preparation conditions. Rutile phase TiO2 nanoparticles were directly used as starting material to prepare film and led to a simple preparation process. It was found that several different microstructures existed in the sample and changed with the varied positions from the center to the edge of the film when the concentration of the TiO2 suspension is 0.06 mol/l, the deposition time is 30 min, the flow rate is 1 l/min and the temperature is 150°C. The surface texturing shows apparent distinction as the concentration of the TiO2 suspension decreased to 0.03 mol/l and 0.01 mol/l.

Highlights

There has been great interest in titanium oxide (TiO2) film due to its chemical stability, high transparency in the visible region, photocatalytic activity and great mechanical durability
We report the novel technique to prepare TiO2 films with unique surface textures possessing porous structure and ring and chromatic veins by mist deposition method using nanoparticles as starting material at a low temperature
In comparison with the uniform TiO2 porous films obtained by other methods, the randomly textured TiO2 film prepared by mist deposition is more suitable for our research purpose because its roughness is high and the angular dependence of reflectance is low on random surface and more incident light can be scattered in the solar cell if such kind of textured TiO2 film used as back reflector

Summary

Introduction

There has been great interest in titanium oxide (TiO2) film due to its chemical stability, high transparency in the visible region, photocatalytic activity and great mechanical durability. There is no literature report about the preparation of porous TiO2 film by mist deposition method.

Results

Conclusion