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Tellurium quantum dots: Preparation and optical properties / Vincent, Teng

Applied Physics Letters, Volume: 111, Issue: 6, Start page: 063112

Swansea University Author: Vincent, Teng

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DOI (Published version): 10.1063/1.4993819

Abstract

Herein, we report an effective and simple method for producing Tellurium Quantum dots (TeQDs), zero-dimensional nanomaterials with great prospects for biomedical applications. Their preparation is based on the ultrasonic exfoliation of Te powder dispersed in 1-methyl-2-pyrrolidone. Sonication causes...

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Published in: Applied Physics Letters
ISSN: 0003-6951 1077-3118
Published: 2017
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URI: https://cronfa.swan.ac.uk/Record/cronfa34847
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Abstract: Herein, we report an effective and simple method for producing Tellurium Quantum dots (TeQDs), zero-dimensional nanomaterials with great prospects for biomedical applications. Their preparation is based on the ultrasonic exfoliation of Te powder dispersed in 1-methyl-2-pyrrolidone. Sonication causes the van der Waals forces between the structural hexagons of Te to break so that the relatively coarse powder breaks down into nanoscale particles. The TeQDs have an average size of about 4 nm. UV-Vis absorption spectra of the TeQDs showed an absorption peak at 288 nm. Photoluminescence excitation (PLE) and photoluminescence (PL) are used to study the optical properties of TeQDs. Both the PLE and PL peaks revealed a linear relationship against the emission and excitation energies, respectively. TeQDs have important potential applications in biological imaging and catalysis as well as optoelectronics.
Keywords: Metalloids, Optical properties, Quantum dots, Luminescence spectroscopy, Ultrasonics
College: College of Engineering
Issue: 6
Start Page: 063112