Solvent Optimization of Transferred Graphene with Rosin Layer Based on DOE

The method of transferring graphene to semiconductor substrates based on rosin gradually becomes common in practice. Unlike the previous method (use of polymethacrylate) this procedure does not lead to significant contamination at the end of the transfer. The disadvantage, however, is the need to use two solvents: acetone and banana oil instead of one. The purpose of this article is to investigate, by means of a planned experiment, the influence of rosin solvents conventionally used on the resulting graphene layer contamination. The solvents used were isopropyl alcohol (IPA), ethanol and xylene. It was shown by the measured data using atomic force microscopy (AFM), that the lowest contamination can be achieved using isopropyl alcohol.