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In situ infrared spectroscopy during La2O3 ALD using La(iPrCp)3 and H2O

Published

Author(s)

Brent A. Sperling, James E. Maslar, Sergei Ivanov

Abstract

Infrared spectra have been obtained during atomic layer deposition using tris(isopropylcyclopentadienyl)lanthanum, La(iPrCp)3, and water as precursors at 160 °C and 350 °C. Gas-phase spectra of La(iPrCp)3 are additionally obtained for comparison. At low temperature, ligand exchange is seen to occur. In addition, carbonates are found. With extended purging, the organic ligands are stable on the surface, and carbonates are not formed. These observations indicate that carbonate formation is occurring during exposure to the precursors. At high temperature, the La precursor is observed to decompose leaving an opaque deposit containing relatively little hydrogen.
Citation
Journal of Vacuum Science and Technology A

Keywords

atomic layer deposition, lanthanum oxide, infrared spectroscopy

Citation

Sperling, B. , Maslar, J. and Ivanov, S. (2018), In situ infrared spectroscopy during La2O3 ALD using La(iPrCp)3 and H2O, Journal of Vacuum Science and Technology A (Accessed May 29, 2024)

Issues

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Created April 26, 2018