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Jun
Band Gap Determination By Uv Vis. 318 into the Wavelength of Absorption peak in. Electrons are able to jump from one band to another. Absorbance spectrum of your samplesThen using Tauc equation the band gap energy will obtained. AbsorptioninSemiconductorsin this video we have discussed about what is absorbance transmittance and the relationship between them.
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The band gap of Group 12-16 semiconductors is in the UV-visible region. This means the minimum energy required to excite an electron from the valence states of the Group 12-16 semiconductor QDs to its conduction states lies in the UV-visible region. However like other physical and chemical properties of materials the value of E g can be notoriously influenced by the synthesis route andor processing method. The optical band gap was calculated using absorption edge values λ. Material can be determined from its UV VIS absorption spectrum. Band gap Eg calculation of UV-Vis spectroscopy from absorption spectra - YouTube.
The optical band gap was calculated using absorption edge values λ.
Where Energy E Band gap Planks constant h 662610-34 Joules sec Velocity of Light C 299108 metersec and Wavelength λ Absorption peak value. Absorbance spectrum of your samplesThen using Tauc equation the band gap energy will obtained. In order for an electron to jump from a valence band to a conduction band it requires a specific minimum amount of energy. The term band gap refers to the energy difference between the top of the valence band to the bottom of the conduction band See Figure 1. Graphic representations were used to calculate Eg. Where Energy E Band gap Planks constant h 662610-34 Joules sec Velocity of Light C 299108 metersec and Wavelength λ Absorption peak value.