![Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to ${\\left( {{E_g}} \\right)_C},{\\text{ }}{\\left( {{E_g}} \\right)_{Si}}{\\text ... Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to ${\\left( {{E_g}} \\right)_C},{\\text{ }}{\\left( {{E_g}} \\right)_{Si}}{\\text ...](https://www.vedantu.com/question-sets/17a5ca21-e66a-499e-8737-d5c13918e2f14835090380208633835.png)
Carbon, silicon and germanium have four valence electrons each. These are characterised by valence and conduction bands separated by energy band gap respectively equal to ${\\left( {{E_g}} \\right)_C},{\\text{ }}{\\left( {{E_g}} \\right)_{Si}}{\\text ...
![Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters | Nature Communications Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters | Nature Communications](https://media.springernature.com/m685/springer-static/image/art%3A10.1038%2Fs41467-020-17563-0/MediaObjects/41467_2020_17563_Fig1_HTML.png)
Exciton-driven change of phonon modes causes strong temperature dependent bandgap shift in nanoclusters | Nature Communications
![band gap, explained by RP; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence band gap, explained by RP; dielectrics, semiconductors, metals, energy, electronic levels, band gap wavelength, absorption, emission, fluorescence](https://www.rp-photonics.com/img/indirect_bandgap.png)