Confinement-, surface- and disorder-related effects in the resonant Raman spectra of nanometric CdS1−xSex crystals

• Published in: Physica Status Solidi (b) Vol. 239; no. 2; pp. 490 - 499
• Main Authors: Gomonnai, A. V., Azhniuk, Yu. M., Yukhymchuk, V. O., Kranjčec, M., Lopushansky, V. V.
• Format: Journal Article
• Language: English
• Published: Berlin WILEY-VCH Verlag 01.10.2003; WILEY‐VCH Verlag; Wiley
• Subjects: 78.30.Fs; 78.67.Bf; Condensed matter: electronic structure, electrical, magnetic, and optical properties; Exact sciences and technology; Iii-v and ii-vi semiconductors; Infrared and raman spectra and scattering; Nanocrystals and nanoparticles; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; Physics; Raman spectra; Inorganic compounds; Pressure effects; Quantum dots; Ternary compounds; Transition element compounds; Composition effect; Sulfur Selenides; Experimental study; Cadmium selenides; II-VI semiconductors; Phonon mode; Ordering; Nanocrystal
• ISSN: 0370-1972; 1521-3951
• DOI: 10.1002/pssb.200301838

The Raman spectra of CdS1−xSex nanocrystals, embedded in a borosilicate glass matrix, are studied, CdS‐like 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.