Exciton dynamics and lattice relaxation in oligosilanes

Shozo Suto, H. Suzuki, R. Ono, M. Shimizu, T. Goto, Akira Watanabe, M. Matsuda

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)

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.

Original languageEnglish
Pages (from-to)4025-4028
Number of pages4
JournalInternational Journal of Modern Physics B
Volume15
Issue number28-30
Publication statusPublished - 2001 Dec 10

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Condensed Matter Physics

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