New renewable energy has been drawing attention as fossil fuels are being depleted. The solar cell, a type of new renewable energy, can produce energy only during the daytime. The contaminants attached onto the surface of the solar cells module are following yellow dust, dust, and bird droppings. The low efficiency of solar cells is caused by reducing solar energy with contaminants. Thus, it is important to remove the contaminants attached to the of surface solar cell modules. In this study, the surface properties of the glass substrate coated with functional nano thin films were analyzed on oven, microwave oven and natural drying conditions.