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Nanoscience & Nanotechnology-Asia
ISSN (Print): 2210-6812
ISSN (Online): 2210-6820
VOLUME: 4
ISSUE: 1
DOI: 10.2174/22106812113036660014









Fluorescence of ZnTe Quantum Dots Prepared Through Chemical Route

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Author(s): Lalit Baruah, Debesh K. Avasthi and Siddhartha S. Nath
Pages 45-48 (4)
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.
Affiliation:
Central Instrumentation Laboratory (CIL), AUS -788011, India.