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Chin. Phys., 2004, Vol. 13(10): 1753-1757    DOI: 10.1088/1009-1963/13/10/032
CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES Prev   Next  

Raman spectra of ZnSe nanoparticles synthesized by thermal evaporation method

An Hui-Zhi, Zhao Qing, Du Wei-Min
Institute of Modern Optics, School of Physics, Peking University, Beijing 100871, China
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.
Keywords:  ZnSe nanoparticles      surface modes      Raman spectra      macroscopic continuum dielectric model(MCDM)  
Received:  13 February 2004      Revised:  29 March 2004      Published:  20 June 2005
PACS:  61.46.-w (Structure of nanoscale materials)  
  78.30.Ly (Disordered solids)  
  63.22.+m  
  71.55.Gs (II-VI semiconductors)  

Cite this article: 

An Hui-Zhi, Zhao Qing, Du Wei-Min Raman spectra of ZnSe nanoparticles synthesized by thermal evaporation method 2004 Chin. Phys. 13 1753

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