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Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy
Deep ultraviolet (UV) photoluminescence (PL) spectroscopy was employed to study the luminescence properties of hexagonal boron nitride (h-BN) crystal powders after annealing the samples at different temperatures in the range of 100–900 °C for 1 h in ambient air. The PL spectrum from the h-BN powder...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114656/ https://www.ncbi.nlm.nih.gov/pubmed/33996148 http://dx.doi.org/10.1557/s43580-021-00059-4 |
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author | Maharjan, Nikesh Nakarmi, Mim Lal |
author_facet | Maharjan, Nikesh Nakarmi, Mim Lal |
author_sort | Maharjan, Nikesh |
collection | PubMed |
description | Deep ultraviolet (UV) photoluminescence (PL) spectroscopy was employed to study the luminescence properties of hexagonal boron nitride (h-BN) crystal powders after annealing the samples at different temperatures in the range of 100–900 °C for 1 h in ambient air. The PL spectrum from the h-BN powder samples annealed around 700 °C showed strong luminescence intensity at 5.49 eV along with enhanced phonon-assisted band-edge emission at 5.90 eV. Additionally, it revealed sharp atomic-like emission lines in UV region at 4.10, 4.12, 4.14, and 4.16 eV with line widths less than 1 nm from the annealed samples which were not present in the unannealed samples. Power- and temperature-dependent PL measurements of the sharp atomic-like emission lines exhibited robust nature of the energy peak positions. Based on the theoretical reports, the sharp emission lines could be carbon-related defects. |
format | Online Article Text |
id | pubmed-8114656 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-81146562021-05-12 Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy Maharjan, Nikesh Nakarmi, Mim Lal MRS Adv Original Paper Deep ultraviolet (UV) photoluminescence (PL) spectroscopy was employed to study the luminescence properties of hexagonal boron nitride (h-BN) crystal powders after annealing the samples at different temperatures in the range of 100–900 °C for 1 h in ambient air. The PL spectrum from the h-BN powder samples annealed around 700 °C showed strong luminescence intensity at 5.49 eV along with enhanced phonon-assisted band-edge emission at 5.90 eV. Additionally, it revealed sharp atomic-like emission lines in UV region at 4.10, 4.12, 4.14, and 4.16 eV with line widths less than 1 nm from the annealed samples which were not present in the unannealed samples. Power- and temperature-dependent PL measurements of the sharp atomic-like emission lines exhibited robust nature of the energy peak positions. Based on the theoretical reports, the sharp emission lines could be carbon-related defects. Springer International Publishing 2021-05-12 2021 /pmc/articles/PMC8114656/ /pubmed/33996148 http://dx.doi.org/10.1557/s43580-021-00059-4 Text en © The Author(s), under exclusive licence to The Materials Research Society 2021 This article is made available via the PMC Open Access Subset for unrestricted research re-use and secondary analysis in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the World Health Organization (WHO) declaration of COVID-19 as a global pandemic. |
spellingShingle | Original Paper Maharjan, Nikesh Nakarmi, Mim Lal Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy |
title | Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy |
title_full | Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy |
title_fullStr | Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy |
title_full_unstemmed | Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy |
title_short | Luminescence properties of hexagonal boron nitride powders probed by deep UV photoluminescence spectroscopy |
title_sort | luminescence properties of hexagonal boron nitride powders probed by deep uv photoluminescence spectroscopy |
topic | Original Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8114656/ https://www.ncbi.nlm.nih.gov/pubmed/33996148 http://dx.doi.org/10.1557/s43580-021-00059-4 |
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