Ultra-thin Gate Oxide Prepared by Nitridation in ND3 for MOS Device Applications
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ABSTRACTThe electrical and reliability characteristics of ultra-thin gate oxide, annealed in ND3 gas, have been investigated. Compared with a control oxide, which had been annealed in NH3, the ND3-nitrided oxide exhibits a significant reduction in charge trapping and interface state generation. The improvement of electrical and reliability characteristics can be explained by the strong Si-D bond at the Si/SiO2 interface. This nitridation process of gate dielectric using ND3 has considerable potential for future ultra large scaled integration (ULSI) device applications.
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1993 ◽
Vol 32
(Part 1, No. 1B)
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pp. 423-428
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