PHYSICAL AND CHEMICAL PROPERTIES OF IMPURITY DOPED II-VI SEMICONDUCTOR NANOMATERIALS
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Abstract
The physical and electronics properties of manganese doped II-VI semiconductor nanocrystals are reviewed. Several semiconductor host materials such as CdS, ZnS, ZnSe and CdSe have been used for Mn-doped nanocrystals. The materials prepared by chemical route technique at room temperature. The nanocrystals exhibit the “quantum size effect” which results in unique characteristics different from host materials. The present paper describe synthesis of CdS:Mn and ZnS:Mn nanocrystals and analysis of their absorption spectra in uv-visible region. The particle size was estimated at 2 nm to 20 nm. In this size regime the optical properties of the particles are governed by the size quantization effect. All nanocrystals structure synthesized being to the cubic crystal structure. Some applications of this class of materials are outlined.References
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