Hi all,
I have synthesized SnO2 (tin oxide) powder that needs to be dissolved in m-cresol solvent in order to spin coat the solution to a 1cm x 1cm glass substrate to produce a desired thickness of 1 micrometer or less. I need your help in determining the required concentration of SnO2 + m-cresol solvent to ensure full coverage on the glass substrate and desired thickness. Please let me know your thoughts! Is there a specific formula that connects thickness of film and how much powder/solvent to add?
Any help would be greatly appreciated!!
Thank you,
Karisse
Assuming you deposit everything which is in the solution, you need to calculate the mass, not the concentration. Your film has a volume V=1cm*1cm*1um=10-10m3. Assuming you know the density rho of your deposited material, you need to dissolve the mass m=rho*10-10m3 in whatever solvent you prefer to use.
May I answer that question based on my experience and knowledge? Generally, the determination of full coverage deposition of the solution onto solid material needs to optimize the variable of solvent and solute. However, if the solution's molarity from the previous report is provided, you may follow that as the formula of rho x percentage purity of solvent x 10 divided by the relative mass of solvent. Here we considered the role of the solvent that will be dominated in that solution. I hope it can be useful. Thank you
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