Surface Passivation of CdS/Zn₂ SiO₄b Nanocomposites Prepared by a Wet Chemical Route

Authors: Lee, Hyun Joo; Lee, Soo Il

Source: Journal of Nanoscience and Nanotechnology, Volume 6, Number 11, November 2006 , pp. 3369-3372(4)

Publisher: American Scientific Publishers

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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 matrixin modifying the surface states.

Keywords: CDS; ZN2SIO4; NANOCOMPOSITES; SURFACE PASSIVATION

Document Type: Research article

DOI: http://dx.doi.org/10.1166/jnn.2006.012

Publication date: 2006-11-01

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