Exciton dynamics and lattice relaxation in oligosilanes

S. Suto; H. Suzuki; R. Ono; M. Shimizu; T. Goto; A. Watanabe; M. Matsuda

Exciton dynamics and lattice relaxation in oligosilanes

S. Suto, H. Suzuki, R. Ono, M. Shimizu, T. Goto, A. Watanabe, M. Matsuda

Research output: Contribution to journal › Article › peer-review

Abstract

We have measured the absorption, photoluminescence, photoluminescence excitation spectra and the time response of luminescence intensity of the permethyl-hexasilane (Si₆(CH₃)₁₄) glass and permethyldodecasilane (Si_{8916-5 Takayama-cho12}(CH₃)₂₆) in 3-methylpentane solution. The Si₆(CH₃)₁₄ oligomer shows a strong lattice relaxation in the photo-excited state and we have determined the parameters in configuration coordinate of Si₆(CH₃)₁₄ oligomer. The luminescence is attributed to the self-trapped exciton state. The Si₁₂(CH₃)₂₆ oligomer has several conformers at room temperature and only one conformer at 77 K. The Si₁₂(CH₃)₂₆ shows a weak lattice relaxation at room temperature and form free excitons at 77 K.

Original language	English
Pages (from-to)	4025-4028
Number of pages	4
Journal	International Journal of Modern Physics B
Volume	15
Issue number	28-30
Publication status	Published - 2001 Dec 10

ASJC Scopus subject areas

Statistical and Nonlinear Physics
Condensed Matter Physics

Cite this

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title = "Exciton dynamics and lattice relaxation in oligosilanes",

abstract = "We have measured the absorption, photoluminescence, photoluminescence excitation spectra and the time response of luminescence intensity of the permethyl-hexasilane (Si6(CH3)14) glass and permethyldodecasilane (Si8916-5 Takayama-cho12(CH3)26) in 3-methylpentane solution. The Si6(CH3)14 oligomer shows a strong lattice relaxation in the photo-excited state and we have determined the parameters in configuration coordinate of Si6(CH3)14 oligomer. The luminescence is attributed to the self-trapped exciton state. The Si12(CH3)26 oligomer has several conformers at room temperature and only one conformer at 77 K. The Si12(CH3)26 shows a weak lattice relaxation at room temperature and form free excitons at 77 K.",

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T1 - Exciton dynamics and lattice relaxation in oligosilanes

AU - Suto, S.

AU - Suzuki, H.

AU - Ono, R.

AU - Shimizu, M.

AU - Goto, T.

AU - Watanabe, A.

AU - Matsuda, M.

PY - 2001/12/10

Y1 - 2001/12/10

N2 - We have measured the absorption, photoluminescence, photoluminescence excitation spectra and the time response of luminescence intensity of the permethyl-hexasilane (Si6(CH3)14) glass and permethyldodecasilane (Si8916-5 Takayama-cho12(CH3)26) in 3-methylpentane solution. The Si6(CH3)14 oligomer shows a strong lattice relaxation in the photo-excited state and we have determined the parameters in configuration coordinate of Si6(CH3)14 oligomer. The luminescence is attributed to the self-trapped exciton state. The Si12(CH3)26 oligomer has several conformers at room temperature and only one conformer at 77 K. The Si12(CH3)26 shows a weak lattice relaxation at room temperature and form free excitons at 77 K.

AB - We have measured the absorption, photoluminescence, photoluminescence excitation spectra and the time response of luminescence intensity of the permethyl-hexasilane (Si6(CH3)14) glass and permethyldodecasilane (Si8916-5 Takayama-cho12(CH3)26) in 3-methylpentane solution. The Si6(CH3)14 oligomer shows a strong lattice relaxation in the photo-excited state and we have determined the parameters in configuration coordinate of Si6(CH3)14 oligomer. The luminescence is attributed to the self-trapped exciton state. The Si12(CH3)26 oligomer has several conformers at room temperature and only one conformer at 77 K. The Si12(CH3)26 shows a weak lattice relaxation at room temperature and form free excitons at 77 K.

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Exciton dynamics and lattice relaxation in oligosilanes

Abstract

ASJC Scopus subject areas

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