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Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates
The relative intensity of the blue component of the total emission from light-emitting diodes (LEDs) can be an important factor when assessing their biological safety. Carbon quantum dots (CQDs) are compatible with many materials and present a high density of multiple surface states; the incorporati...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080883/ https://www.ncbi.nlm.nih.gov/pubmed/35542368 http://dx.doi.org/10.1039/c8ra03359e |
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author | Huang, Peng Yuan, Guodong Wei, Tongbo Li, Jinmin Ashfold, Michael N. R. |
author_facet | Huang, Peng Yuan, Guodong Wei, Tongbo Li, Jinmin Ashfold, Michael N. R. |
author_sort | Huang, Peng |
collection | PubMed |
description | The relative intensity of the blue component of the total emission from light-emitting diodes (LEDs) can be an important factor when assessing their biological safety. Carbon quantum dots (CQDs) are compatible with many materials and present a high density of multiple surface states; the incorporation of such CQDs thus offers a route to modifying the emission from a given LED matrix. Here we report the fabrication of stable CQD/zinc pyrovanadate (Zn(3)(OH)(2)V(2)O(7)·2H(2)O) nanoplate composites via a facile hydrothermal route. Structural and morphological analyses confirm that the nanoplates are hexagonal phase and grew normal to the [0001] direction. X-ray photoemission spectroscopy, Raman and infrared spectroscopy demonstrate that the CQDs combine with nanoplates via surface carbon–oxygen bonds. Wavelength resolved photoluminescence measurements show that the relative intensity of the blue (2.93 eV) component of the emission associated with the nanoplates is significantly reduced by incorporating CQDs. We suggest that this reduction arises as a result of preferential trapping of the higher energy photoelectrons by surface defects on the CQDs. |
format | Online Article Text |
id | pubmed-9080883 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-90808832022-05-09 Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates Huang, Peng Yuan, Guodong Wei, Tongbo Li, Jinmin Ashfold, Michael N. R. RSC Adv Chemistry The relative intensity of the blue component of the total emission from light-emitting diodes (LEDs) can be an important factor when assessing their biological safety. Carbon quantum dots (CQDs) are compatible with many materials and present a high density of multiple surface states; the incorporation of such CQDs thus offers a route to modifying the emission from a given LED matrix. Here we report the fabrication of stable CQD/zinc pyrovanadate (Zn(3)(OH)(2)V(2)O(7)·2H(2)O) nanoplate composites via a facile hydrothermal route. Structural and morphological analyses confirm that the nanoplates are hexagonal phase and grew normal to the [0001] direction. X-ray photoemission spectroscopy, Raman and infrared spectroscopy demonstrate that the CQDs combine with nanoplates via surface carbon–oxygen bonds. Wavelength resolved photoluminescence measurements show that the relative intensity of the blue (2.93 eV) component of the emission associated with the nanoplates is significantly reduced by incorporating CQDs. We suggest that this reduction arises as a result of preferential trapping of the higher energy photoelectrons by surface defects on the CQDs. The Royal Society of Chemistry 2018-06-06 /pmc/articles/PMC9080883/ /pubmed/35542368 http://dx.doi.org/10.1039/c8ra03359e Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry Huang, Peng Yuan, Guodong Wei, Tongbo Li, Jinmin Ashfold, Michael N. R. Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
title | Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
title_full | Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
title_fullStr | Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
title_full_unstemmed | Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
title_short | Introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
title_sort | introducing carbon dots to moderate the blue emission from zinc vanadium oxide hydroxide hydrate nanoplates |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9080883/ https://www.ncbi.nlm.nih.gov/pubmed/35542368 http://dx.doi.org/10.1039/c8ra03359e |
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