Physical and electrical characteristics of atomic layer deposited RuO 2 nanocrystals for nanoscale nonvolatile memory applications

W. Banerjee*, S. Maikap

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

The physical and electrical characteristics of atomic layer deposited kappa;RuO2 nanocrystals embedded in high-κ HfO 2/Al2O3 films in an n-Si/SiO 2/HfO2/RuO2/Al2O3/Pt memory structure have been investigated. A small size of <10 nm and high-density of ∼ 1.6*1012/cm2 for the RuO 2 nanocrystals have been observed by high-resolution transmission electron microscope (HRTEM). The RuO2 metal nanocrystals and all high-κ films have been confirmed by x-ray photoelectron spectroscopy (XPS). A large hysteresis memory window of ⇐=Vε 10.8 V at a gate voltage of Vg = ±10 V has been observed for RuO2 nanocrystal memory capacitors. A hysteresis memory window of ⇐=Vε2.4 V has also been observed under a small sweeping gate voltage of Vg = ±5 V, due to charge storage in the RuO2 metal nanocrystals. The RuO2 metal nanocrystal memory capacitors have a large breakdown voltage of -15V. A low charge loss of 15% is observed after 10 years of retention.

Original languageEnglish
Title of host publicationICSICT 2008 - 2008 9th International Conference on Solid-State and Integrated-Circuit Technology Proceedings
Pages951-954
Number of pages4
DOIs
StatePublished - 2008
Event2008 9th International Conference on Solid-State and Integrated-Circuit Technology, ICSICT 2008 - Beijing, China
Duration: 20 10 200823 10 2008

Publication series

NameInternational Conference on Solid-State and Integrated Circuits Technology Proceedings, ICSICT

Conference

Conference2008 9th International Conference on Solid-State and Integrated-Circuit Technology, ICSICT 2008
Country/TerritoryChina
CityBeijing
Period20/10/0823/10/08

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