The Raman spectra of CdS 1-x Se x nanocrystals, embedded in a borosilicate glass matrix, are studied, CdSlike and CdSe-like LO phonon frequencies being used to determine the nanocrystal composition. The Raman lineshape is analyzed taking account of confinement-related phonons with nonzero wavevector, surface phonon modes, glass matrix pressure and disorder effects.
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