Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds

In the study, well-crystallized nano-diamonds with an average size of 3.8 nm are obtained via femtosecond laser ablation. Both steady-state and transient luminescence are observed. The luminescence peaks of nano-diamonds shift from 380 to 495 nm when the excitation wavelength changes from 280 to 420...

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Autores principales: Hao, Juan, Pan, Lingyun, An, Minghui, Dai, Yunzhi, Gao, Bingrong
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2020
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7441128/
https://www.ncbi.nlm.nih.gov/pubmed/32816127
http://dx.doi.org/10.1186/s11671-020-03393-y
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author Hao, Juan
Pan, Lingyun
An, Minghui
Dai, Yunzhi
Gao, Bingrong
author_facet Hao, Juan
Pan, Lingyun
An, Minghui
Dai, Yunzhi
Gao, Bingrong
author_sort Hao, Juan
collection PubMed
description In the study, well-crystallized nano-diamonds with an average size of 3.8 nm are obtained via femtosecond laser ablation. Both steady-state and transient luminescence are observed. The luminescence peaks of nano-diamonds shift from 380 to 495 nm when the excitation wavelength changes from 280 to 420 nm. After passivation by polyethylene glycol-400N, the surface of nano-diamonds is significantly oxidized, which is verified by Raman and UV-Vis absorption spectra. Furthermore, there is no change in all the luminescence wavelengths, although the maximum intensity increases by 10 times. Time-resolved luminescence spectra reveal that trapping states can be modified by surface passivation, and this leads to stronger luminescence with a longer lifetime.
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spelling pubmed-74411282020-08-28 Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds Hao, Juan Pan, Lingyun An, Minghui Dai, Yunzhi Gao, Bingrong Nanoscale Res Lett Nano Express In the study, well-crystallized nano-diamonds with an average size of 3.8 nm are obtained via femtosecond laser ablation. Both steady-state and transient luminescence are observed. The luminescence peaks of nano-diamonds shift from 380 to 495 nm when the excitation wavelength changes from 280 to 420 nm. After passivation by polyethylene glycol-400N, the surface of nano-diamonds is significantly oxidized, which is verified by Raman and UV-Vis absorption spectra. Furthermore, there is no change in all the luminescence wavelengths, although the maximum intensity increases by 10 times. Time-resolved luminescence spectra reveal that trapping states can be modified by surface passivation, and this leads to stronger luminescence with a longer lifetime. Springer US 2020-08-20 /pmc/articles/PMC7441128/ /pubmed/32816127 http://dx.doi.org/10.1186/s11671-020-03393-y Text en © The Author(s) 2020 Open AccessThis article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Nano Express
Hao, Juan
Pan, Lingyun
An, Minghui
Dai, Yunzhi
Gao, Bingrong
Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds
title Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds
title_full Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds
title_fullStr Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds
title_full_unstemmed Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds
title_short Time-Resolved Luminescence Properties of Laser-Fabricated Nano-diamonds
title_sort time-resolved luminescence properties of laser-fabricated nano-diamonds
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7441128/
https://www.ncbi.nlm.nih.gov/pubmed/32816127
http://dx.doi.org/10.1186/s11671-020-03393-y
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AT daiyunzhi timeresolvedluminescencepropertiesoflaserfabricatednanodiamonds
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