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.
|Number of pages||4|
|Journal||International Journal of Modern Physics B|
|Publication status||Published - 2001 Dec 10|
ASJC Scopus subject areas
- Statistical and Nonlinear Physics
- Condensed Matter Physics