title: Surface passivation of CdS/Zn2SiO4 nanocomposites prepared by a wet chemical route.
abstract: Highly luminescent CdS/Zn2SiO4 nanocrystals were prepared by a wet chemical method. The effect of surface passivation was observed in photoluminescence measurements of CdS nanocrystals embedded in colloidal nanocrystallite or amorphous Zn2SiO4 matrix. The resultant luminescent emission of as-prepared CdS/Zn2SiO4 nanocomposite thin films displays two distinct components. One is attributed to the band-edge emission and the other is due to the surface defects. The effect of aging on CdS/Zn2SiO4 nanocomposite thin films has been investigated, showing the active role of Zn2SiO4 matrix in modifying the surface states.
authors.affiliation: Department of Physics Education, Chosun University, Gwangju, 501-759, Korea.
authors.forename: Hyun Joo
authors.initials: HJ
authors.lastname: Lee
authors.forename: Soo Il
authors.initials: SI
authors.lastname: Lee
mesh_terms: D019187:Cadmium Compounds / Q000737:chemistry*; D003460:Crystallization; D053761:Nanocomposites / Q000737:chemistry*; D053758:Nanoparticles / Q000737:chemistry*; D036103:Nanotechnology / Q000379:methods*; D017640:Silicates / Q000737:chemistry*; D013440:Sulfides / Q000737:chemistry*; D013499:Surface Properties; D013696:Temperature; D014961:X-Ray Diffraction; D015032:Zinc / Q000737:chemistry*
chemical_list: D019187:Cadmium Compounds; D017640:Silicates; D013440:Sulfides; C034939:cadmium sulfide; D015032:Zinc