Knowledge Gained from UV-Vis Spectroscopy

This is often written in a form referred to simply as Beer s Law  

The absorbance A can be normalized to the path length I of the light through the material (e.g., the thickness of a film), producing the absorption coefficient a [1]  

For semiconductors, UV-Vis spectroscopy offers a convenient method of estimating the optical band gap, since it probes electronic transitions between the 

Chen et al., Photoelectrochemical Water Splitting, SpringerBriefs in Energy, DOI 10.1007/978-T4614-8298-7 5, The Author(s) 2013 

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