Measurements of Band Gap in Compound Semiconductors - Band Gap Determination from Diffuse Reflectance Spectra

In this measurement, the band gap was determined for three types of compound semiconductor materials (CuInSe2, CuIn0.5Ga0.5Se2, CuGaSe2). These are often used as the functional material in solar batteries based on the compound semiconductors , however, as demonstrated here, these 3 types possess different band gap values. Application of the Tauc relational expression, as shown in this example, allows determination of the band gap in powder samples using the diffuse reflectance spectrum

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Molecular Spectroscopy, UV-Vis Spectrophotometers
Energy and Chemicals
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