EFFECT OF HYDROGEN ON TRAP GENERATION, POSITIVE CHARGE TRAPPING, AND TIME-DEPENDENT DIELECTRIC BREAKDOWN OF GATE OXIDES.

被引：0
|
作者：
Nissan-Cohen, Y. [1 ]
Gorczyca, T. [1 ]
机构：
[1] GE, Schenectady, NY, USA, GE, Schenectady, NY, USA
来源：
Electron device letters | 1987年 / 9卷 / 06期
关键词：
HYDROGEN - OXIDES - Electric Breakdown;
D O I：
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中图分类号：
学科分类号：
摘要：
The effect of high-temperature ( approximately equals 900 degree C) hydrogen on the gate oxides of MOS devices is studied. Hydrogen is introduced into devices by either high-temperature anneal or conventional process steps such as low-pressure chemical vapor deposition (LPCVD) of Si//3N//4. In all cases, measurements of high-field stress behavior show that high-temperature hydrogen steps reduce time to breakdown and increase bulk and interface trap generation, but do not affect the generation of positive charge. These results indicate that the wear-out mechanism of gate oxides at high fields is related to trap generation rather than to accumulation of positive charge.
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