Journal
CURRENT NANOSCIENCE
Volume 6, Issue 1, Pages 89-93Publisher
BENTHAM SCIENCE PUBL LTD
DOI: 10.2174/157341310790226333
Keywords
Blue shift; FTIR spectroscopy; semiconductor nanoparticles; transmission electron microscopy; UV-Vis spectroscopy; Wurtzite structure
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Funding
- University Grant Commission New Delhi under Rajeev Gandhi National Fellowship Scheme
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Present study describes a simultaneous and highly reproducible, large-scale, one-pot, template free synthesis of nearly homogeneous and blue luminescent CdSe nanoparticles (NPs) in a single reaction at 50 degrees C by wet chemical method. The method is simple, inexpensive and ensures almost complete utilization of the precursors. The product was well characterized by X-ray diffraction, UV-Vis. spectroscopy, Fourier transform infrared spectroscopy and Transmission electron microscopy. X-ray diffraction pattern indicates that CdSe NPs possess a Wurtzite ( Hexagonal) structure. Systematic particle size dependent 'blue shift' is observed in optical absorption edge. Transmission electron microscopy showed that the particles diameters are in the range of 5 - 8 nm.
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