Properties of Ruthenium Films Prepared by Liquid Source Metalorganic Chemical Vapor Deposition Using Ru(EtCp) 2 with Tetrahydrofuran Solvent
Pure Ru thin films were deposited on SiO 2 /Si substrates, using Ru(C 2 H 5 C 5 H 4 ) 2 with C 4 H 8 O (THF) solvent, by liquid source metalorganic chemical vapor deposition. The Ru single phase could be obtained under all growth conditions. For temperatures below 350°C, deposition occurred in the s...
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Published in | Japanese Journal of Applied Physics Vol. 39; no. 11B; p. L1188 |
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Main Authors | , , , , , , , , |
Format | Journal Article |
Language | English |
Published |
15.11.2000
|
Online Access | Get full text |
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Summary: | Pure Ru thin films were deposited on SiO
2
/Si substrates, using Ru(C
2
H
5
C
5
H
4
)
2
with C
4
H
8
O (THF) solvent, by liquid source metalorganic chemical vapor deposition. The Ru single phase could be obtained under all growth conditions. For temperatures below 350°C, deposition occurred in the surface reaction region because the kinetics increased exponentially as a function of the deposition temperature with an activation energy of about 1.1 eV. Above 350°C, the deposition was controlled by the mass transport process. Step coverage for the Ru thin films deposited at 300–325°C with an aspect ratio of 3.3 was about 100%. The Ru thin films grown at 325°C showed a dense and smooth microstructure and had resistivities of <100 µΩ·cm. |
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ISSN: | 0021-4922 1347-4065 |
DOI: | 10.1143/JJAP.39.L1188 |