Estimation of WSe₂ Layer Thickness using Reflectance Spectra and Comparison with Graphene based on Wavelength

Department of Biomedical Engineering, Saveetha School of Engineering, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, Tamil Nadu, India - 602105.

^* Corresponding author: rakhinova2023@gmail.com

Abstract

The purpose of this study is to calculate the WSe2 layer thickness using reflectance spectra and comparison with graphene using wavelength in the Novel 2D material reflectance spectra Using nanoHUB.org, the study’s data was gathered. According to clinicalcalc.com, samples were categorized as (N=20) for WSe2 layers and (N=20) for graphene layers. The total sample size was calculated while maintaining the following values: alpha error-threshold value = 0.05, enrollment ratio = 0.1, 95% confidence interval = 80%, and G-power = 80%. Comparison is done by independent sample test using SPSS software. There is a statistically significant difference in the thickness of the WSe2 layer and Graphene layer with (p=.001, p<0.05).WSe₂ layer (3.4717) showed better results in comparison to the graphene layer (2.0669). The WSe₂ layers has more thickness when compared to graphene layers.