Abstract ZnSe nanoparticles were synthesized by using a thermal evaporation method for a vapour phase reaction of zinc and selenium sources. The sample was characterized by XRD, TEM, HRTEM and Raman spectroscopy. Raman spectra of longitudinal-optical (LO) like mode was analysed by a macroscopic continuum dielectric model. Large broadening of LO-mode is homogeneous and comes from the relaxation of the phonons at the interface and contribution of defects. Surface modes give the main contribution to the asymmetry of the lineshape.
Received: 13 February 2004
Revised: 29 March 2004
Accepted manuscript online:
An Hui-Zhi (安辉芝), Zhao Qing (赵清), Du Wei-Min (杜为民) Raman spectra of ZnSe nanoparticles synthesized by thermal evaporation method 2004 Chinese Physics 13 1753
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