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. 👉 If you find this tutorial helpful, don’t forget to like, comment, and subscribe to Nano Analysis Hub for more nanoscience and materials analysis tutorials! ▶️ WATCH NEXT – Related Tutorials in OriginLab & Materials Analysis: • Plot Single XRD Pattern →    • How to Plot XRD Data in Origin & Index Mil...   • Plot Multiple XRD Spectra →    • How to Plot Multiple XRD Spectra in One Gr...   • Plot FTIR Spectra →    • How to Plot FTIR Graph in OriginPro | Labe...   • Plot UV-Visible Spectra →    • How to plot UV visible graph in origin || ...   • Plot TGA-DTA Data →    • How to Plot TGA-DTA Data in Originlab ||TG...   • Bar Graph with Error Bars →    • How to Plot Bar Graph with Error Bars in O...   • Reusability/Recycling Graph →    • How to Plot a Reusability (Recyclability) ...   • Draw Degradation Mechanism (PowerPoint) →    • How to Draw Photocatalytic Degradation Mec...   • Convert XRD Raw Data to ASC Format →    • How to Convert XRD Raw Data to ASC Format ...   • Plot Multiple FTIR Spectra in One Graph →    • How to Plot Multiple FTIR Spectra in One G...   • Label XRD Peaks with Miller Indices (hkl) →    • How to Label XRD Peaks with Miller Indices...   • Install & Integrate X’Pert HighScore →    • How to Download, Install & Integrate X’Per...   • Plot XRD Data with JCPDS Values in OriginLab →    • How to Plot XRD Data with JCPDS Values in ...   • Merge Multiple Graphs in OriginLab →    • How to Merge Multiple Graphs in OriginLab ...   • Calculate d-Spacing from HR-TEM (Gatan DM) →    • How to Calculate d-Spacing from HR-TEM usi...   • Calculate d-Spacing from HR-TEM (ImageJ) →    • How to Calculate d-Spacing from HR-TEM Ima...   #BandGap #UVVis #TaucPlot #OriginLab #Nanomaterials #MaterialsScience #Spectroscopy