I want to prepare compact TiO2 layer for solar cell using mildy acidic TTIP as a precursor and Ethanol as a solution but after stirring still get precipitation. I followed reported literature but still getting precipitation.
The precipitate is attributed to Ti(OH)x that transform to TiO2 in an aggregation form.You can use acetyl acetone or acetic acid to minimize precipitation problem and enhance TiO2 dispersion.
According to your project and query, I have tried several time with acidic TTIP solution, TTIP is diluted with IPA and mixed with mildly acid HCl solution.