UV-Vis-NIR Spectroscopy: An Effective Tool for Single Crystal Analysis

Single crystals serve as essential components in many technological applications because of their distinct structural and electrical characteristics. A flexible method that makes it possible to examine the optical and electrical characteristics of these materials is UV-Visible-NIR spectroscopy. This method offers important information on the bandgap energy, electronic transitions, and impurity levels by examining how electromagnetic radiation interacts with the crystal lattice. This chapter provides an extensive overview to UV-visible-NIR spectroscopy, emphasizing its fundamentals, methods of experimentation, and uses in single crystal analysis. In-depth discussion of spectrum interpretation based on the article from literature is covered in this chapter, along with the identification of absorption bands and the characteristics like bandgap energy. We will additionally highlight the importance of this method in assessing the performance, quality, and purity of individual crystals. This chapter attempts to give learners a good understanding of UV-Visible-NIR spectroscopy as an effective tool that is essential for researchers engaged with a number of solid-state physics and materials science disciplines.