A non-destructive analytic tool for nanostructured materials : Raman and photoluminescence spectroscopy

TL;DR

This paper introduces a cost-effective, home-built Raman spectroscopy setup for analyzing various nanostructured materials, enhancing research and education in nanotechnology without relying on expensive commercial instruments.

Contribution

It presents a less expensive, DIY Raman spectroscopy system tailored for nanomaterials, with detailed instrumentation and validation on multiple nanostructure classes.

Findings

Successful characterization of Ge nanoparticles, porous silicon, carbon nanotubes, and InGaAs quantum layers.

Demonstrates the setup's utility in research and teaching environments.

Provides a detailed design for a low-cost Raman spectroscopy instrument.

Abstract

Modern materials science requires efficient processing and characterization techniques for low dimensional systems. Raman spectroscopy is an important non-destructive tool, which provides enormous information on these materials. This understanding is not only interesting in its own right from a physicist's point of view, but can also be of considerable importance in optoelectronics and device applications of these materials in nanotechnology. The commercial Raman spectrometers are quite expensive. In this article, we have presented a relatively less expensive set-up with home-built collection optics attachment. The details of the instrumentation have been described. Studies on four classes of nanostructures - Ge nanoparticles, porous silicon (nanowire), carbon nanotubes and 2D InGaAs quantum layers, demonstrate that this unit can be of use in teaching and research on nanomaterials.