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Interface Study of SiO2/ HfO2/SiO2 Stacks Used as InterPoly Dielectric for Future Generations of Embedded Flash Memories
Published online by Cambridge University Press: 01 February 2011
Abstract
We have investigated the integration of Hf-based material as Inter Poly Dielectric in flash memories devices. Electrical measurements showed the good properties of SiO2/HfO2/SiO2 stacks. We then interested to the impact of the thermal budget on this specific stack which induces changes in the electrical properties. XPS measurements suggests those changes are due to the presence of an Hf-silicate layer at the SiO2/HfO2 interface.
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- Copyright © Materials Research Society 2010