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Organic Synthesis of Highly Luminescent CdSe Quantum Dot

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We report the synthesis of high quality organically soluble cadmium selenide nanocrystals. This method involves the reduction of selenium powder to produce selenide ions which act as the Selenide source, followed by the addition of cadmium acetate. The nanoparticles were passivated with organic surfactants such as hexadecy-lamine (HDA) and tri-octylphosphine oxide (TOPO), for their solubility and stability in organic solvents. The high quality of the as-synthesized nanoparticles was confirmed using absorption (UV-Vis) spectroscopy and photoluminescence spectroscopy (PL), Fourier transform infrared spectroscopy (FT-IR), X-ray diffraction (XRD), Scanning electron microscopy (SEM). The band gap 3.45 eV of CdSe nanocrystals, effective mass approximation and photoluminescence blue shift further confirm the narrow size of particles.
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Keywords: Organic Synthesis; Photoluminescence; Quantum Dots; Scanning Electron Microscopy

Document Type: Research Article

Affiliations: 1: Centre for Converging Technologies, University of Rajasthan, Jaipur 302004, India 2: Semi-Conductors and Polymer Science Laboratory, Department of Physics, University of Rajasthan, Jaipur 302004, India

Publication date: November 1, 2016

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  • ADVANCED SCIENCE LETTERS is an international peer-reviewed journal with a very wide-ranging coverage, consolidates research activities in all areas of (1) Physical Sciences, (2) Biological Sciences, (3) Mathematical Sciences, (4) Engineering, (5) Computer and Information Sciences, and (6) Geosciences to publish original short communications, full research papers and timely brief (mini) reviews with authors photo and biography encompassing the basic and applied research and current developments in educational aspects of these scientific areas.
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