Journal article 1348 views 206 downloads
Tellurium quantum dots: Preparation and optical properties
Chaoyu Lu,
Xueming Li,
Libin Tang,
Sin Ki Lai,
Lukas Rogée,
Kar Seng Teng,
Fuli Qian,
Liangliang Zhou,
Shu Ping Lau,
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...
| Published in: | Applied Physics Letters |
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| ISSN: | 0003-6951 1077-3118 |
| Published: |
2017
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| Online Access: |
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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. |
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| Keywords: |
Metalloids, Optical properties, Quantum dots, Luminescence spectroscopy, Ultrasonics |
| College: |
Faculty of Science and Engineering |
| Issue: |
6 |
| Start Page: |
063112 |