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Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites
Increasing structural complexity at nanoscale can permit superior control over photophysical properties in the precursor-derived semiconductors. We demonstrate here the synthesis of silicon carbonitride (SiCN)/boron nitride (BN) nanocomposites via a polymer precursor route wherein the cobalt polyami...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233973/ https://www.ncbi.nlm.nih.gov/pubmed/28084300 http://dx.doi.org/10.1038/srep39866 |
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author | Zhang, Qian Jia, Dechang Yang, Zhihua Cai, Delong Laine, Richard M. Li, Qian Zhou, Yu |
author_facet | Zhang, Qian Jia, Dechang Yang, Zhihua Cai, Delong Laine, Richard M. Li, Qian Zhou, Yu |
author_sort | Zhang, Qian |
collection | PubMed |
description | Increasing structural complexity at nanoscale can permit superior control over photophysical properties in the precursor-derived semiconductors. We demonstrate here the synthesis of silicon carbonitride (SiCN)/boron nitride (BN) nanocomposites via a polymer precursor route wherein the cobalt polyamine complexes used as the catalyst, exhibiting novel composite structures and photophysical properties. High Resolution Transmission Electron Microscopy (HRTEM) analysis shows that the diameters of SiCN−BN core−shell nanocomposites and BN shells are 50‒400 nm and 5‒25 nm, respectively. BN nanosheets (BNNSs) are also observed with an average sheet size of 5‒15 nm. The photophysical properties of these nanocomposites are characterized using the UV-Vis and photoluminescence (PL) analyses. The as-produced composites have emission behavior including an emission lifetime of 2.5 ns (±20 ps) longer observed in BN doped SiCN than that seen for SiC nanoparticles. Our results suggest that the SiCN/BN nanocomposites act as semiconductor displaying superior width photoluminescence at wavelengths spanning the visible to near-infrared (NIR) spectral range (400‒700 nm), owing to the heterojunction of the interface between the SiC(N) nanowire core and the BN nanosheet shell. |
format | Online Article Text |
id | pubmed-5233973 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | Nature Publishing Group |
record_format | MEDLINE/PubMed |
spelling | pubmed-52339732017-01-17 Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites Zhang, Qian Jia, Dechang Yang, Zhihua Cai, Delong Laine, Richard M. Li, Qian Zhou, Yu Sci Rep Article Increasing structural complexity at nanoscale can permit superior control over photophysical properties in the precursor-derived semiconductors. We demonstrate here the synthesis of silicon carbonitride (SiCN)/boron nitride (BN) nanocomposites via a polymer precursor route wherein the cobalt polyamine complexes used as the catalyst, exhibiting novel composite structures and photophysical properties. High Resolution Transmission Electron Microscopy (HRTEM) analysis shows that the diameters of SiCN−BN core−shell nanocomposites and BN shells are 50‒400 nm and 5‒25 nm, respectively. BN nanosheets (BNNSs) are also observed with an average sheet size of 5‒15 nm. The photophysical properties of these nanocomposites are characterized using the UV-Vis and photoluminescence (PL) analyses. The as-produced composites have emission behavior including an emission lifetime of 2.5 ns (±20 ps) longer observed in BN doped SiCN than that seen for SiC nanoparticles. Our results suggest that the SiCN/BN nanocomposites act as semiconductor displaying superior width photoluminescence at wavelengths spanning the visible to near-infrared (NIR) spectral range (400‒700 nm), owing to the heterojunction of the interface between the SiC(N) nanowire core and the BN nanosheet shell. Nature Publishing Group 2017-01-13 /pmc/articles/PMC5233973/ /pubmed/28084300 http://dx.doi.org/10.1038/srep39866 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ |
spellingShingle | Article Zhang, Qian Jia, Dechang Yang, Zhihua Cai, Delong Laine, Richard M. Li, Qian Zhou, Yu Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites |
title | Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites |
title_full | Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites |
title_fullStr | Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites |
title_full_unstemmed | Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites |
title_short | Facile synthesis, microstructure and photophysical properties of core-shell nanostructured (SiCN)/BN nanocomposites |
title_sort | facile synthesis, microstructure and photophysical properties of core-shell nanostructured (sicn)/bn nanocomposites |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233973/ https://www.ncbi.nlm.nih.gov/pubmed/28084300 http://dx.doi.org/10.1038/srep39866 |
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