A mass-production compatible capacitor technology for DRAMs with design rule down to 20 nm

Gyu Jin Choi, Seong Keun Kim, Jeong Hwan Han, Sang Woon Lee, Cheol Seong Hwang

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

2 Scopus citations

Abstract

TiO2 and Al-doped TiO2 (ATO) films were studied as the capacitor dielectrics for the dynamic random access memory devices with the design rule of < 40 nm. These materials grown on the variously processed Ru electrode showed a very promising electrical performances; a minimum equivalent oxide thickness of 0.48 nm with the safe leakage current density. The crystal structure, role of the interface with the Ru electrode on the phase formation of TiO2, TiO2 process conditions for achieving the optimized film property, Al-doping effect, plasma-process for the TiO2 and ATO film and the adoption of Ru/TiN double layer electrode for the mass-production compatibility are dealt with in this article. The crucial influence of the precursor (RuO4) for the Ru electrode deposition is also described.

Original languageEnglish
Title of host publicationSilicon Nitride, Silicon Dioxide, and Emerging Dielectrics 10
PublisherElectrochemical Society Inc.
Pages625-648
Number of pages24
Edition2
ISBN (Electronic)9781607680604
ISBN (Print)9781566777100
DOIs
StatePublished - 2009
EventInternational Symposium on Silicon Nitride, Silicon Dioxide, and Emerging Dielectrics - 215th Meeting of the Electrochemical Society - San Francisco, CA, United States
Duration: 24 May 200929 May 2009

Publication series

NameECS Transactions
Number2
Volume19
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Conference

ConferenceInternational Symposium on Silicon Nitride, Silicon Dioxide, and Emerging Dielectrics - 215th Meeting of the Electrochemical Society
Country/TerritoryUnited States
CitySan Francisco, CA
Period24/05/0929/05/09

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