Nano Archive

Self-organized ZnSe quantum dots: Syntheses and characterization

Kaushik, Diksha and Singh, R. R. and Sharma, A. B. and Gupta, D. and Sharma, M. and Pandey, R. K. (2008) Self-organized ZnSe quantum dots: Syntheses and characterization. JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, 8 (3). pp. 1502-1511.

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Self-organized ZnSe quantum dots (Q-ZnSe) were grown on indium tin oxide substrate using wet chemical technique without or in presence of copper and manganese dopants. The structural, morphological and luminescence properties of the as grown Q-dot films have been investigated, using X-ray diffraction, transmission electron microscopy, atomic force microscopy and optical and luminescence spectroscopy. Composition of the samples were analyzed using atomic absorption spectroscopy. The quantum dots have been shown to deposit in a compact, uniform and organized array on the indium tin oxide substrate. The size dependent blue shift in the experimentally determined absorption edge has been compared with the theoretical predictions based on the effective mass and tight binding approximations. It is shown that the experimentally determined absorption edges depart significantly from the theoretically calculated values. The photoluminescence properties of the undoped as well as doped Q-ZnSe have also been discussed.

Item Type:Article
Uncontrolled Keywords:nanostructures; self-organization; X-ray diffraction; atomic force microscopy; luminescence
Subjects:Material Science > Nanofabrication processes and tools
Physical Science > Nano objects
Physical Science > Quantum phenomena
ID Code:6111
Deposited By:IoN
Deposited On:05 Aug 2009 11:10
Last Modified:05 Aug 2009 11:10

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