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Accurate Extraction of the Trap Depth from RTS Noise Data by Including Poly Depletion Effect and Surface Potential Variation in MOSFETs

Hochul LEE, Youngchang YOON, Seongjae CHO, Hyungcheol SHIN

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Summary :

Accurate extraction of the trap position in the oxide in deep-submicron MOSFET by RTN measurement has been investigated both theoretically and experimentally. The conventional equation based on the ratio of emission time and capture time ignores two effects, that is, the poly gate depletion effect and surface potential variation in strong inversion regime. In this paper, by including both of the two effects, we have derived a new equation which gives us more accurate information of the trap depth from the interface and the trap energy. With experimental result, we compare the trap depth obtained from the new equation and that of the conventional method.

Publication
IEICE TRANSACTIONS on Electronics Vol.E90-C No.5 pp.968-972
Publication Date
2007/05/01
Publicized
Online ISSN
1745-1353
DOI
10.1093/ietele/e90-c.5.968
Type of Manuscript
Special Section PAPER (Special Section on Fundamentals and Applications of Advanced Semiconductor Devices)
Category
Ultra-Thin Gate Insulators

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