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Nanocrystalline (HoxY1-x)(2)Ti2O7 luminophores for short- and mid-infrared lasers
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SYSNO ASEP 0574987 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Nanocrystalline (HoxY1-x)(2)Ti2O7 luminophores for short- and mid-infrared lasers Author(s) Mrázek, Jan (URE-Y) RID, ORCID
Kamrádková, Soňa (URE-Y)
Buršík, Jiří (UFM-A) RID, ORCID
Skála, Roman (GLU-S) RID, SAI, ORCID
Bartoň, Ivo (URE-Y) ORCID, RID
Vařák, Petr (URE-Y)
Baravets, Yauhen (URE-Y)
Podrazký, Ondřej (URE-Y) RIDNumber of authors 8 Source Title Journal of Sol-Gel Science and Technology. - : Springer - ISSN 0928-0707
Roč. 107, č. 2 (2023), s. 320-328Number of pages 9 s. Publication form Print - P Language eng - English Country US - United States Keywords Sol-gel ; Nanocrystals ; Luminophore ; Infrared ; Pyrochlore ; Holmium Subject RIV BH - Optics, Masers, Lasers OECD category Optics (including laser optics and quantum optics) Subject RIV - cooperation Institute of Physics of Materials - Solid Matter Physics ; Magnetism
Institute of Geology - Geology ; MineralogyR&D Projects GA22-17604S GA ČR - Czech Science Foundation (CSF) Method of publishing Limited access Institutional support URE-Y - RVO:67985882 ; GLU-S - RVO:67985831 ; UFM-A - RVO:68081723 UT WOS 000975030600001 EID SCOPUS 85153040324 DOI 10.1007/s10971-023-06113-x Annotation We present a versatile sol-gel approach for low-phonon nanocrystalline (HoxY1-x)(2)Ti2O7, x = <0.01, 0.40> exhibiting luminescence within the spectral range 2000-3000 nm. The nanocrystalline structure of (HoxY1-x)(2)Ti2O7 was studied and the effect of the composition and phonon energy on the luminescence properties was evaluated. Regular distribution of Ho3+ ions inside the pyrochlore crystal lattice was proved leading to a regular increase of the unit cell parameter. The luminescence intensity recorded at 2025 nm reached a maximum for the composition (Ho0.03Y0.96)(2)Ti2O7. The radiative lifetime recorded at 2025 nm regularly decreased with increasing content of Ho3+ ions inside the pyrochlore lattice from 6.32 to 0.22 ms. The phonon energy of the samples was smaller than 700 cm(-1) allowing the luminescence spectral range to be extended up to 2900 nm. Further tailoring of the chemical composition can improve the emission at 2860 nm providing a promising high thermally and chemically stable alternative to conventional fluoride or chalcogenide glasses. Workplace Institute of Radio Engineering and Electronics Contact Petr Vacek, vacek@ufe.cz, Tel.: 266 773 413, 266 773 438, 266 773 488 Year of Publishing 2024 Electronic address https://link.springer.com/article/10.1007/s10971-023-06113-x
Number of the records: 1