Fluorescence of ZnTe Quantum Dots Prepared Through Chemical Route

ISSN: 2210-6820 (Online)
ISSN: 2210-6812 (Print)


Volume 4, 2 Issues, 2014


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Nanoscience & Nanotechnology-Asia

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Fluorescence of ZnTe Quantum Dots Prepared Through Chemical Route

Author(s): Lalit Baruah, Debesh K. Avasthi and Siddhartha S. Nath

Affiliation: Central Instrumentation Laboratory (CIL), AUS -788011, India.

Abstract

The room-temperature fluorescence spectroscopy of zinc telluride quantum dots is investigated. ZnTe quantum dots are synthesized by a chemical route in ethylene glycol with different reactant concentrations and reaction temperatures. Prepared samples are characterized by X-ray diffractometry (XRD) and high resolution transmission electron microscopy. XRD investigation shows the cubic structured ZnTe nanoparticles. The size measurement shows an approximate size of 4-12 nm quantum dots. UV-Vis absorption spectroscopy shows the size-quantization effect and the band gap energy increases by an amount 2.16 eV of the quantum dots. Furthermore as the chemical parameters change, the size of quantum dot changes systemically and the fluorescence peak is observed in 554 nm – 585 nm.

Keywords: Chemical route, ZnTe, Quantum dots, Fluorescence.

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Article Details

Volume: 4
Issue Number: 1
First Page: 45
Last Page: 48
Page Count: 4
DOI: 10.2174/22106812113036660014
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