The Effect of Piranha and Silane Modifications on Boron Nitride Nanosheets (BNNSs) Thin Film Formation

Abstract

In this study, the aim was to increase the adhesion between the two phases (glass substrate and BNNSs film). Surface treatment was provided by TEOS silane group and piranha solution. The retention times of the glass surfaces in the piranha solution and the adherence of different ratios of the silane solution to the glass surface were investigated. Surface characterization was carried out by Fourier Transform Infrared Spectrophotometer (FT-IR). Scanning Electron Microscopy (SEM) images were taken to characterize the surface morphology, the thickness of the thin films and the structure of boron nitride nanosheets. UV visible spectrophotometer was used to determine the efficiency of boron nitride nanosheets after the exfoliation process. Surface roughness tester (Time TR200) was used to determine surface roughness of the thin films. According to the results, it was observed that the piranha and silane solutions improved the adhesion of the glass surface. SEM images showed that the silane was coated on the glass surface and the coating material was retained on the silane. Excess silane loading caused the structure to deteriorate. Boron nitride yield was calculated and found to be 54.1% and 34.1% for different centrifugation rates after exfoliation.