journal article·2002-11

ZrO2 as a high-K dielectric for strained SiGe MOS devices

R. Mahapatra, G. S. Kar, C. B. Samantaray, A. Dhar, D. Bhattacharya, S. K. Ray

Bulletin of Materials Science· Volume 25· Issue 6
Publisher page

Abstract

The potential of ZrO2 thin film as a high-K gate dielectric for scaled MOSFET devices has been studied. ZrO2 has been deposited directly on a Si0.8Ge0.2 substrate by reactive RF magnetron sputtering. An equivalent oxide thickness of < 20 A with a leakage current of the order of 10-4 A/cm2 at 1 V has been obtained. Well-behaved capacitance-voltage characteristics with an interface state density of 2 × 1011 cm-2eV-1 have been achieved. The deposited dielectric exhibits low charge trapping under constant current stressing.
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Research context

OpenAlex topics: Semiconductor materials and devices · Advancements in Semiconductor Devices and Circuit Design · Semiconductor materials and interfaces

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