Semiconductor Glossary, Developed Semi OneSource.
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Term (Index) Definition
Eg  symbol of energy gap (bandgap) in solids.
Term (Index) Definition
energy gap, forbidden band, bandgap, Eg  energy band separating conduction and valence bands in the solid; no electron energy levels are allowed in the forbidden band; no energy gap in metals in which case conduction and valence bands overlap; solids featuring energy gap are defined as either semiconductors or insulators based on the width of energy gap; values of Eg (at 300K) for common semiconductors: InSb - 0.17 eV, Ge - 0.67 eV, Si - 1.12 eV, GaAs - 1.43 eV GaP - 2.26 eV, 6H-SiC - 2.9 eV, GaN - 3.5 eV, and insulators Ta2O5 - 4.2 eV , TiO2 -5 eV, Si3N4 - 5.1, Al2O3 ~5 eV, SiO2 - 8.0
conduction band  the upper energy band in semiconductor separated by the energy gap (bandgap)from the valance band; c.b. is not completely filled with electrons, hence, electrons can conduct in the conduction band.
valence band  energy band in semiconductor that is filled with electrons at 0 K; electrons cannot conduct in valence band.
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Created and operated by J. Ruzyllo. Copyright J. Ruzyllo 2001-2016. All rights reserved.

Information in this glossary is provided at the author's discretion. Any liability based on, or related to the contents of this glossary is disclaimed.