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Linear and nonlinear Raman studies on CdSxSe1-x dopes glasses (CROSBI ID 135766)

Prilog u časopisu | izvorni znanstveni rad | međunarodna recenzija

Bishof, Thomas ; Ivanda, Mile ; Lermann, Gunther ; Materny, Arnulf ; Kiefer, Wofgang ; Kalus, J. Linear and nonlinear Raman studies on CdSxSe1-x dopes glasses // Journal of Raman spectroscopy, 27 (1996), 3-4; 297-302-x

Podaci o odgovornosti

Bishof, Thomas ; Ivanda, Mile ; Lermann, Gunther ; Materny, Arnulf ; Kiefer, Wofgang ; Kalus, J.

engleski

Linear and nonlinear Raman studies on CdSxSe1-x dopes glasses

The Raman scattering from acoustical phonons of silicon quantum dots in glass matrix was investigated.Two peaks that correspond to symmetric and quadrupolar spheroidal vibrations were found. A model calculation for in- and off-resonance scattering conditions was used, which considered the homogeneous broadening due to interaction with matrix and the inhomogeneous broadening due to particle size distribution. A strong dependence of the light-to-vibration coupling coefficient on the particles size was needed for fitting the Raman data. This result suggests that resonance with electronic transitions of the silicon nanoparticles is important for excitation at 514.5 nm. The size distribution obtained from the Raman data is in agreement with the results of high-resolution transmission electron microscopy.

Raman; Nonlinear; II-VI semiconductors; low frequency

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Podaci o izdanju

27 (3-4)

1996.

297-302-x

objavljeno

0377-0486

Povezanost rada

Fizika

Indeksiranost