Comments on the Refractive Index of Tin Sulphide Nano-crystalline Thin Films

TL;DR

This paper investigates the refractive index of nano-crystalline tin sulphide thin films, demonstrating that the index increases with grain size and crystal ordering, aligning with the single oscillator model.

Contribution

It provides experimental validation of the refractive index behavior in SnS thin films and links it to crystal structure improvements.

Findings

Refractive index increases with grain size.

Experimental data aligns with the single oscillator model.

Improved crystal ordering enhances optical properties.

Abstract

The refractive indices of nano-crystalline thin films of Tin (IV) Sulphide (SnS) were investigated here. The experimental data conformed well with the single oscillator model for refractive indices. Based on the this, we explain the increasing trend of refractive index to the improvement in crystal ordering with increasing grain size.