Ultra Thin Tantalum Pentaoxide Dielectric Film
碩士 === 國立交通大學 === 材料科學與工程系 === 88 === In this study, we use magnetron frequency sputter technique to make Iridium Oxide (IrOx) bottom electrode and amorphous ultra thin (as-deposited thickness 48Å~125Å)tantalum pentaoxide (Ta2O5). After the Al/Ta2O5/IrOx/SiO2/Si structure is obtained, we...
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ndltd-TW-088NCTU01590282015-10-13T10:59:52Z http://ndltd.ncl.edu.tw/handle/13708392527272040487 Ultra Thin Tantalum Pentaoxide Dielectric Film 超薄氧化鉭Ta2O5介電薄膜研究 Tzu-Chia Wu 吳子嘉 碩士 國立交通大學 材料科學與工程系 88 In this study, we use magnetron frequency sputter technique to make Iridium Oxide (IrOx) bottom electrode and amorphous ultra thin (as-deposited thickness 48Å~125Å)tantalum pentaoxide (Ta2O5). After the Al/Ta2O5/IrOx/SiO2/Si structure is obtained, we study the physical and electrical properties of the film and discussed the relationship between surface roughness, leakage current density and dielectric constant. The film grows proportionally to deposition time after the thickness is larger than 78Å.I-V and C-V measurement revealed that at constant electric field(1.4MV/cm), the film with thickness 65Å has the lowest leakage current density ; the higher the annealing temperature, the higher the dielectric constant. XPS depth profile showed that the O/Ta ratio is close to exact stoichiometery 2.5/1. The Atomic Force Microscope observed that after annealing, the surface becomes rough so that the local electric field deteriorates the leakage current characterization. Pang Lin 林 鵬 2000 學位論文 ; thesis 67 zh-TW |
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碩士 === 國立交通大學 === 材料科學與工程系 === 88 === In this study, we use magnetron frequency sputter technique to make Iridium Oxide (IrOx) bottom electrode and amorphous ultra thin (as-deposited thickness 48Å~125Å)tantalum pentaoxide (Ta2O5). After the Al/Ta2O5/IrOx/SiO2/Si structure is obtained, we study the physical and electrical properties of the film and discussed the relationship between surface roughness, leakage current density and dielectric constant.
The film grows proportionally to deposition time after the thickness is larger than 78Å.I-V and C-V measurement revealed that at constant electric field(1.4MV/cm), the film with thickness 65Å has the lowest leakage current density ; the higher the annealing temperature, the higher the dielectric constant. XPS depth profile showed that the O/Ta ratio is close to exact stoichiometery 2.5/1. The Atomic Force Microscope observed that after annealing, the surface becomes rough so that the local electric field deteriorates the leakage current characterization.
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author2 |
Pang Lin |
author_facet |
Pang Lin Tzu-Chia Wu 吳子嘉 |
author |
Tzu-Chia Wu 吳子嘉 |
spellingShingle |
Tzu-Chia Wu 吳子嘉 Ultra Thin Tantalum Pentaoxide Dielectric Film |
author_sort |
Tzu-Chia Wu |
title |
Ultra Thin Tantalum Pentaoxide Dielectric Film |
title_short |
Ultra Thin Tantalum Pentaoxide Dielectric Film |
title_full |
Ultra Thin Tantalum Pentaoxide Dielectric Film |
title_fullStr |
Ultra Thin Tantalum Pentaoxide Dielectric Film |
title_full_unstemmed |
Ultra Thin Tantalum Pentaoxide Dielectric Film |
title_sort |
ultra thin tantalum pentaoxide dielectric film |
publishDate |
2000 |
url |
http://ndltd.ncl.edu.tw/handle/13708392527272040487 |
work_keys_str_mv |
AT tzuchiawu ultrathintantalumpentaoxidedielectricfilm AT wúzijiā ultrathintantalumpentaoxidedielectricfilm AT tzuchiawu chāobáoyǎnghuàtǎnta2o5jièdiànbáomóyánjiū AT wúzijiā chāobáoyǎnghuàtǎnta2o5jièdiànbáomóyánjiū |
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