alexa Design Of Insulators By Atomic Layer Deposition For Semiconductor Devices | 24630
ISSN: 2169-0022

Journal of Material Sciences & Engineering
Open Access

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3rd International Conference and Exhibition on Materials Science & Engineering

Toshihide Nabatame
ScientificTracks Abstracts: Material Sci Eng
DOI: 10.4172/2169-0022.S1.014
Abstract
Atomic layer deposition (ALD) technique has been widely investigated to achieve the requirements of atomic-level controllability and conformal growth on three-dimensional structure for a wide range of semiconductor application. Indeed, future scaling of Complementary Metal-Oxide-Semiconductor and charge trap flash memory require new materials as gate insulator and charge tarp layer, respectively. Ionic oxides such as Al2O3, TiO2, and (Ta/Nb)Ox have promising candidates because of a high dielectric constant (high-k) value and large band gap. We present characteristic of each layer and Al2O3/(Ta/ Nb)Ox/Al2O3 multi-layer fabricated by a low temperature process using ALD. The anatase TiO2 and (Ta/Nb)Ox thin films are negligible small charge and have significant high k value of about 30. We found that charge trap capacitors with Al2O3/(Ta/Nb) Ox/Al2O3 multi-layer show superior electrical properties and trapping mechanism of high-k layer as a charge trap layer.
Biography
Toshihide Nabatame received his PhD in Engineering in 1994 from Tokyo Institute of Technology and worked at Hitachi Ltd and Renesas Technology Co. He is manager of MANA Foundry in NIMS, Japan. His research interest is to find and fabricate functional devices with metal oxide thin film for future semiconductor region.
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