I made a thin layer of titanium dioxide in the lab. What methods can now be used?

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D. Brahmi

There are two methods: chemical and electrochemical

chemical: dip or spin coating

Subhendu Bhandari

For carrier concentration and mobility, you may use Hall effect testing.

Waqas Hassan Tanveer

EIS testing with Scottky analysis, Hall effect measurements

MSH Al-Furjan

Hall effect test can use for carrier concentration and mobility. For thin layer of TiO2 then you can use spin coating.