Temperature dependent energy transfer to Eu3+ emission centres in K5Eu(MoO4)4 crystals
(2024) In CrystEngComm 26(8). p.1106-1116- Abstract
Luminescence properties of a palmierite-type K5Eu(MoO4)4 crystal were studied in a wide temperature range of 7-650 K. Eu3+ ions are shown to occupy at least three non-equivalent positions in the palmierite-type structure, forming emission centres with slightly different characteristics due to an incommensurate modulated disordering. The relative intensity of the Eu3+ emission bands originating from the 5D0 and 5D1 terms is shown to depend on excitation energy and the origin of the observed differences is discussed. It is shown that quenching temperature of the Eu3+ emission depends on excitation energy that is explained by... (More)
Luminescence properties of a palmierite-type K5Eu(MoO4)4 crystal were studied in a wide temperature range of 7-650 K. Eu3+ ions are shown to occupy at least three non-equivalent positions in the palmierite-type structure, forming emission centres with slightly different characteristics due to an incommensurate modulated disordering. The relative intensity of the Eu3+ emission bands originating from the 5D0 and 5D1 terms is shown to depend on excitation energy and the origin of the observed differences is discussed. It is shown that quenching temperature of the Eu3+ emission depends on excitation energy that is explained by energetical overlap of the 4f-4f Eu3+ transitions with the Urbach tail of the fundamental absorption region. Energy transfer processes to the Eu3+ emission centres were studied using the methods of time resolved spectroscopy.
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- author
- Spassky, Dmitry ; Vasil'Ev, Andrey ; Jamal, Muhammad Usama ; Morozov, Vladimir A. ; Lazoryak, Bogdan I. ; Redkin, Boris S. ; Chernenko, Kirill LU and Nagirnyi, Vitali
- organization
- publishing date
- 2024
- type
- Contribution to journal
- publication status
- published
- subject
- in
- CrystEngComm
- volume
- 26
- issue
- 8
- pages
- 11 pages
- publisher
- Royal Society of Chemistry
- external identifiers
-
- scopus:85184024089
- ISSN
- 1466-8033
- DOI
- 10.1039/d3ce01201h
- language
- English
- LU publication?
- yes
- id
- 6fa1a9ca-a55e-4859-a34a-f12cebe39cdf
- date added to LUP
- 2024-02-27 15:18:47
- date last changed
- 2024-02-27 15:18:47
@article{6fa1a9ca-a55e-4859-a34a-f12cebe39cdf,
abstract = {{<p>Luminescence properties of a palmierite-type K<sub>5</sub>Eu(MoO<sub>4</sub>)<sub>4</sub> crystal were studied in a wide temperature range of 7-650 K. Eu<sup>3+</sup> ions are shown to occupy at least three non-equivalent positions in the palmierite-type structure, forming emission centres with slightly different characteristics due to an incommensurate modulated disordering. The relative intensity of the Eu<sup>3+</sup> emission bands originating from the <sup>5</sup>D<sub>0</sub> and <sup>5</sup>D<sub>1</sub> terms is shown to depend on excitation energy and the origin of the observed differences is discussed. It is shown that quenching temperature of the Eu<sup>3+</sup> emission depends on excitation energy that is explained by energetical overlap of the 4f-4f Eu<sup>3+</sup> transitions with the Urbach tail of the fundamental absorption region. Energy transfer processes to the Eu<sup>3+</sup> emission centres were studied using the methods of time resolved spectroscopy.</p>}},
author = {{Spassky, Dmitry and Vasil'Ev, Andrey and Jamal, Muhammad Usama and Morozov, Vladimir A. and Lazoryak, Bogdan I. and Redkin, Boris S. and Chernenko, Kirill and Nagirnyi, Vitali}},
issn = {{1466-8033}},
language = {{eng}},
number = {{8}},
pages = {{1106--1116}},
publisher = {{Royal Society of Chemistry}},
series = {{CrystEngComm}},
title = {{Temperature dependent energy transfer to Eu<sup>3+</sup> emission centres in K<sub>5</sub>Eu(MoO<sub>4</sub>)<sub>4</sub> crystals}},
url = {{http://dx.doi.org/10.1039/d3ce01201h}},
doi = {{10.1039/d3ce01201h}},
volume = {{26}},
year = {{2024}},
}