Record number :
Title of article :
Effects of multiple organic ligands on size uniformity and optical properties of ZnSe quantum dots
Author/Authors :
Archana، نويسنده , , J. and Navaneethan، نويسنده , , Wassim M. and Hayakawa، نويسنده , , Y. and Ponnusamy، نويسنده , , S. and Muthamizhchelvan، نويسنده , , C.، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2012
Pages :
From page :
To page :
Abstract :
The effects of multi-ligands on the formation and optical transitions of ZnSe quantum dots have been investigated. The dots are synthesized using 3-mercapto-1,2-propanediol and polyvinylpyrrolidone ligands, and have been characterized by X-ray diffraction, transmission electron microscopy (TEM), UV–visible absorption spectroscopy, photoluminescence spectroscopy, and Fourier transform infrared spectroscopy. TEM reveals high monodispersion with an average size of 4 nm. Polymer-stabilized, organic ligand-passivated ZnSe quantum dots exhibit strong UV emission at 326 nm and strong quantum confinement in the UV–visible absorption spectrum. Uniform size and suppressed surface trap emission are observed when the polymer ligand is used. The possible growth mechanism is discussed.
Keywords :
A. Nanostructures , A. Semiconductors , B. Chemical synthesis , D. Luminescence , D. Optical properties
Journal title :
Materials Research Bulletin
Serial Year :
Link To Document :