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bandgap

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bandgap  (bndgp)
The difference in energy in a substance between electron orbitals in which the electrons are not free to move (the valence band) and orbitals in which they are relatively free and will carry a current (the conduction band). In semiconductors, some electrons are sustained in the conduction band by thermal energy. Energy released when an electron in the conduction band falls into a hole in the valence band is called bandgap radiation. See also holesemiconductor laser
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The bandgap of a material is the energy difference between electrons residing in the two most important states of a material-valence band states and conduction band states.
Bilayer graphene to pave way for tunable electronic devices by Asian News International
It describes a range of optical and photonic devices, including MEMS optical switches, bandgap crystal switches, optical variable attenuators, and injection locked tunable lasers.
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INTRODUCTION Wide bandgap (WBG) semiconductor devices, which are based on silicone carbide (SiC), gallium nitride (GaN), diamond (C) and semi-wide-gap semiconductor material gallium arsenide (GaAs) as well, demonstrate promising properties under extreme conditions, such as high power, high temperature and high frequency.
Comparison of turn-on characteristics of thyristor structures based ... by Rang, Toomas; Vaselo, Aleksandr; Rang, Galina; Pikkov, Mihhail / Proceedings of the Estonian Academy of Sciences: Engineering
 
 
 
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