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With over 2000 terms defined and explained, Semiconductor Glossary is the most complete reference in the field of semiconductors on the market today.












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Term (Index) Definition
mobile charge  electrically charged species which can move in the MOS gate oxide under the influence of electric field; causes severe instabilities of MOSFET characteristics, e.g. fluctuations of the threshold voltage VT; Na+ ions are the most common mobile charges in SiO2.
sodium, Na  alkaline metal; one of the most common element in the environment; sodium ions Na+ are very harmful contaminants of SiO2 in silicon processing; Na+ ion can move in SiO2 under the influence of electric field resulting in instabilities of characteristics of MOS based devices; Na+ contamination must be prevented in Si manufacturing environment.
Term (Index) Definition
oxide mobile charge, Qm  electrically charged species which can move in the MOS gate oxide under the influence of electric field; causes severe instabilities of MOSFET characteristics, e.g. fluctuations of the threshold voltage VT; Na+ ions are the most common mobile charges in SiO2.
sodium, Na  alkaline metal; one of the most common element in the environment; sodium ions Na+ are very harmful contaminants of SiO2 in silicon processing; Na+ ion can move in SiO2 under the influence of electric field resulting in instabilities of characteristics of MOS based devices; Na+ contamination must be prevented in Si manufacturing environment.
ionic conduction  electrical conduction in an insulator due to ionic rather than electronic motion; slow process featuring high activation energy; example: motion of sodium ions (Na+) in SiO2.
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