Surface passivation of CdS/Zn2SiO4 nanocomposites prepared by a wet chemical route.
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.
Lee
Hyun Joo
HJ
Department of Physics Education, Chosun University, Gwangju, 501-759, Korea.
Lee
Soo Il
SI
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*
D019187:Cadmium Compounds; D017640:Silicates; D013440:Sulfides; C034939:cadmium sulfide; D015032:Zinc