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高温材料处理:国际期刊
ESCI SJR: 0.176 SNIP: 0.48 CiteScore™: 1.3

ISSN 打印: 1093-3611
ISSN 在线: 1940-4360

高温材料处理:国际期刊

DOI: 10.1615/HighTempMatProc.2018025450
pages 299-307

MODIFICATION OF MIS STRUCTURES WITH THERMAL SiO2 FILMS BY PHOSPHORUS DIFFUSION

Dmitrii V. Andreev
N.E. Bauman Moscow State Technical University, Kaluga Branch, 2 Bazhenov Str., Kaluga, 248000, Russia
Gennady G. Bondarenko
National Research University Higher School of Economics, 20 Myasnitskaya Str., Moscow, 101000, Russia
Vladimir V. Andreev
Bauman Moscow State Technical University, The Kaluga Branch, 2 Bazhenov Str., Kaluga, 248000, Russia
Vladimir M. Maslowsky
Zelenograd Research Institute of Physical Problems, 5 Georgievskiy Ave., Zelenograd, 124460, Russia
Alexander A. Stolyarov
N.E. Bauman Moscow State Technical University, Kaluga Branch, 2 Bazhenov Str., Kaluga, 248000, Russia

ABSTRACT

We investigate the diffusion of phosphorus in thermal SiO2 films of MIS structure and influence of the process on charge effects in gate dielectric and at interfaces in Fowler–Nordheim high-field tunnel injection of electrons. One rates the cross sections of electron traps in a phosphosilicate glass (PSG) film. We show that the density of electron traps increases with increasing the PSG film thickness. The ability of using a negative charge has been established. It is accumulated in the PSG film of MIS structures with double-layer SiO2–PSG gate dielectric during high-field tunnel injection of electrons, to modify MIS devices. It is shown that the use of a double-layer SiO2–PSG gate dielectric with concentration of phosphorus in PSG film of 0.4–0.9% allows one to increase the average amount of charge injected into a dielectric until breakdown and decrease the amount of defective structures with a low amount of charge injected into the dielectric before breakdown.


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