{"id":26542,"key":"Tauc_Plot_-_Determining_Optical_Band_Gap","title":"Tauc Plot - Determining Optical Band Gap","latest":{"id":1205259,"timestamp":"2025-11-27T15:14:36Z"},"content_model":"wikitext","license":{"url":"https://www.appropedia.org/Appropedia:Copyrights","title":"CC-BY-SA-4.0"},"source":"{{QAS notice}}\n\n[[File:taucplot.jpg|thumb|taucplot.jpg]]\n\nA Tauc plot is one method of determining the optical band gap in semiconductors. The square root of the product of the absorption coefficient and photon energy -(aE)^0.5 - is plotted versus photon energy. The curve should have a section of straight line. If extended to the x-axis, the x-intercept of this line gives the optical band gap.\n\nSource: https://ascg.msm.cam.ac.uk/characterisation/uvvis.php\n\n{{Page data\n| license = CC-BY-SA-3.0\n}}\n\n[[Category:Queens Applied Sustainability Group Lab Protocols]]\n[[Category:Dirk McLaughlin Thesis]]"}