Determination of the valence electronic structure of condensed trimethylaluminum by photoelectron spectroscopy and molecular orbital calculations

T. Motooka; A. Rockett; P. Fons; J. E. Greene; W. R. Salaneck; R. Bergman; J. E. Sundgren

doi:10.1116/1.575484

Determination of the valence electronic structure of condensed trimethylaluminum by photoelectron spectroscopy and molecular orbital calculations

T. Motooka, A. Rockett, P. Fons, J. E. Greene, W. R. Salaneck, R. Bergman, J. E. Sundgren

Research output: Contribution to journal › Article

8 Citations (Scopus)

Abstract

The electronic structure of dimerized trimethylaluminum (TM A), Al₂ (CH₃)₆, condensed at low temperatures on clean substrates in ultrahigh vacuum, has been investigated using ultraviolet and x-ray photoelectron spectroscopies together with molecular orbital (MO) calculations carried out using the self consistent field Xa-scattered wave method. Valence band spectra revealed three broad peaks centered at ~15.0, 7.5, and 4.5 eV below the Fermi level. The peaks were assigned, based upon computed MO results, to correspond primarily to C(2s) + H(1s), C(2p)+ H(1s), and Al(3p) + C(2p) bonding orbitals, respectively, in dimerized TMA. The wave functions of the upper MO levels corresponding to the 4.5-eV peak were predominantly composed of Al(3p) orbitals.

Original language	English
Pages (from-to)	3115-3119
Number of pages	5
Journal	Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films
Volume	6
Issue number	6
DOIs	https://doi.org/10.1116/1.575484
Publication status	Published - 1988 Nov
Externally published	Yes

ASJC Scopus subject areas

Condensed Matter Physics
Surfaces and Interfaces
Surfaces, Coatings and Films

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10.1116/1.575484

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Motooka, T., Rockett, A., Fons, P., Greene, J. E., Salaneck, W. R., Bergman, R., & Sundgren, J. E. (1988). Determination of the valence electronic structure of condensed trimethylaluminum by photoelectron spectroscopy and molecular orbital calculations. Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, 6(6), 3115-3119. https://doi.org/10.1116/1.575484

Determination of the valence electronic structure of condensed trimethylaluminum by photoelectron spectroscopy and molecular orbital calculations. / Motooka, T.; Rockett, A.; Fons, P.; Greene, J. E.; Salaneck, W. R.; Bergman, R.; Sundgren, J. E.

In: Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, Vol. 6, No. 6, 11.1988, p. 3115-3119.

Research output: Contribution to journal › Article

Motooka, T, Rockett, A, Fons, P, Greene, JE, Salaneck, WR, Bergman, R & Sundgren, JE 1988, 'Determination of the valence electronic structure of condensed trimethylaluminum by photoelectron spectroscopy and molecular orbital calculations', Journal of Vacuum Science and Technology A: Vacuum, Surfaces and Films, vol. 6, no. 6, pp. 3115-3119. https://doi.org/10.1116/1.575484

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title = "Determination of the valence electronic structure of condensed trimethylaluminum by photoelectron spectroscopy and molecular orbital calculations",

abstract = "The electronic structure of dimerized trimethylaluminum (TM A), Al2 (CH3)6, condensed at low temperatures on clean substrates in ultrahigh vacuum, has been investigated using ultraviolet and x-ray photoelectron spectroscopies together with molecular orbital (MO) calculations carried out using the self consistent field Xa-scattered wave method. Valence band spectra revealed three broad peaks centered at ~15.0, 7.5, and 4.5 eV below the Fermi level. The peaks were assigned, based upon computed MO results, to correspond primarily to C(2s) + H(1s), C(2p)+ H(1s), and Al(3p) + C(2p) bonding orbitals, respectively, in dimerized TMA. The wave functions of the upper MO levels corresponding to the 4.5-eV peak were predominantly composed of Al(3p) orbitals.",

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AU - Motooka, T.

AU - Rockett, A.

AU - Fons, P.

AU - Greene, J. E.

AU - Salaneck, W. R.

AU - Bergman, R.

AU - Sundgren, J. E.

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AB - The electronic structure of dimerized trimethylaluminum (TM A), Al2 (CH3)6, condensed at low temperatures on clean substrates in ultrahigh vacuum, has been investigated using ultraviolet and x-ray photoelectron spectroscopies together with molecular orbital (MO) calculations carried out using the self consistent field Xa-scattered wave method. Valence band spectra revealed three broad peaks centered at ~15.0, 7.5, and 4.5 eV below the Fermi level. The peaks were assigned, based upon computed MO results, to correspond primarily to C(2s) + H(1s), C(2p)+ H(1s), and Al(3p) + C(2p) bonding orbitals, respectively, in dimerized TMA. The wave functions of the upper MO levels corresponding to the 4.5-eV peak were predominantly composed of Al(3p) orbitals.

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