応用物理
Online ISSN : 2188-2290
Print ISSN : 0369-8009
ISSN-L : 0369-8009
モリブデナイトの表面状態
中田 一郎
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ジャーナル フリー

1957 年 26 巻 11 号 p. 571-577

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The surface electronic properties of n-type molybdenite are investigated by the measurements of surface potential, surface conduction, surface photovoltaic effect and field effect, in a gas ambient which is cycled between NH3 and HNO3.
The surface potential which is measured by Kelvin method is rather complicated showing an unusual behavior. The surface photovoltage and surface conduction give a regular result similar to the case of n-type germanium. The surface barrier rises in the ambient of HNO3 and the reverse is the case with NH3. The field induced conduction increases in the ambient of NH3 and decreases in HNO3 but the reversal of the sign is not observed.
All the above effects except surface potential can be explained by a model of surface potential barrier qualitatively, but the quantitative discussion of the surface state is not given in this paper.

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