![Why is the absorption coefficient (α) not zero for energy of incident photon less than the band gap of the semiconductor? - Electrical Engineering Stack Exchange Why is the absorption coefficient (α) not zero for energy of incident photon less than the band gap of the semiconductor? - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/Gn7xJ.png)
Why is the absorption coefficient (α) not zero for energy of incident photon less than the band gap of the semiconductor? - Electrical Engineering Stack Exchange
![Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence](https://www.rp-photonics.com/img/indirect_bandgap.png)
Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence
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Photons with energy lower than the band gap energy of the absorbing... | Download Scientific Diagram
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Schematic for bandgap engineering of semiconductors. The band structure... | Download Scientific Diagram
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a) Plot of the F(R) 2 vs photon energy for band gap determination and... | Download Scientific Diagram
![Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence](https://www.rp-photonics.com/previews/band_gap.png)
Band gap, explained by RP Photonics Encyclopedia; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence
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