How to Calculate Band Gap Energy from UV–Vis Data | Tauc Plot in OriginLab Tutorial

In this tutorial, I’ll guide you step by step on how to calculate the optical band-gap energy (Eg) using UV–Vis spectroscopy data.

We’ll focus on the Tauc plot method and cover:
✅ Importing and processing UV–Vis data in OriginLab
✅ Applying the Beer–Lambert law to calculate the absorption coefficient
✅ Using Tauc’s relation to determine the band-gap
✅ Distinguishing between direct and indirect band-gap materials

In the next video, I’ll explain the Kubelka–Munk method for diffuse reflectance (UV–DRS) data.

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#BandGap #UVVis #TaucPlot #OriginLab #Nanomaterials #MaterialsScience #Spectroscopy

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