I want to dissolve Sn2SnO4 for spin coating on FTO. But I can't find any solvent to dissolve this. Which solvent should I use? Suggest me, please.
Hnin Yu Wai
The choice of solvent for spin coating Zn2SnO4 (zinc stannate) thin films depends on several factors including the solubility of the precursor, the desired film properties, and the compatibility with the substrate. Typically, solvents used for spin coating metal oxide thin films should have good solubility for the precursor, low boiling points to facilitate rapid evaporation, and be compatible with the substrate material.
Common solvents used for spin coating metal oxide thin films include:
1. Alcohols: Ethanol, isopropanol (IPA), and methanol are commonly used solvents for metal oxide precursors due to their ability to dissolve many metal salts and organic ligands.
2. Acetone: Acetone is a volatile solvent commonly used in spin coating due to its high volatility and ability to dissolve many organic compounds.
3. Chloroform: Chloroform is another volatile solvent that can dissolve many metal salts and organic ligands.
4. Ethylene glycol: Ethylene glycol is used as a solvent for some metal oxide precursors due to its ability to form coordination complexes with metal ions.
5. Acetic acid: Acetic acid is sometimes used as a solvent or co-solvent to adjust the pH of precursor solutions or to facilitate the dissolution of metal salts.
When choosing a solvent for spin coating Zn2SnO4, it's essential to consider the specific precursor used and conduct compatibility tests to ensure good film formation and desired properties. Additionally, safety considerations such as toxicity, flammability, and environmental impact should be taken into account when selecting solvents for spin coating.
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