Low-temperature photoluminescence in chalcogenide glasses doped with rare-earth ions

Kostka Petr; Zavadil Jiří; Yovu M.; Ivanova Zoya; Furniss D.; Seddon Angela B.

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KOSTKA, Petr, ZAVADIL, Jiří, YOVU, M., IVANOVA, Zoya, FURNISS, D., SEDDON, Angela B.. Low-temperature photoluminescence in chalcogenide glasses doped with rare-earth ions. In: Journal of Alloys and Compounds, 2015, vol. 648, pp. 237-243. ISSN 0925-8388. DOI: https://doi.org/10.1016/j.jallcom.2015.05.135

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Journal of Alloys and Compounds

Volumul 648 / 2015 / ISSN 0925-8388

Low-temperature photoluminescence in chalcogenide glasses doped with rare-earth ions

DOI:https://doi.org/10.1016/j.jallcom.2015.05.135

Pag. 237-243

Kostka Petr¹, Zavadil Jiří², Yovu M.³, Ivanova Zoya⁴, Furniss D.⁵, Seddon Angela B.⁵

¹ Institute of Rock Structure and Mechanics, ASCR,
² Institute of Photonics and Electronics, ASCR,
³ Institute of Applied Physics, Academy of Sciences of Moldova,
⁴ Institute of Solid State Physics, Bulgarian Academy of Sciences,
⁵ University of Nottingham

Disponibil în IBN: 25 mai 2023

Rezumat

Sulfide and oxysulfide bulk glasses Ga-La-S-O, Ge-Ga-S and Ge-Ga-As-S doped, or co-doped, with various rare-earth (RE³⁺) ions are investigated for their room temperature transmission and lowerature photoluminescence. Photoluminescence spectra are collected by using external excitation into the Urbach tail of the fundamental absorption edge of the host-glass. The lowerature photoluminescence spectra are dominated by the broad-band luminescence of the host glass, with superimposed relatively sharp emission bands due to radiative transitions within 4f shells of RE³⁺ions. In addition, the dips in the host-glass luminescence due to 4f-4f up-transitions of RE³⁺ions are observed in the Ge-Ga-S and Ge-Ga-As-S systems. These superimposed narrow effects provide a direct experimental evidence of energy transfer between the host glass and respective RE³⁺dopants.

Cuvinte-cheie
chalcogenide glasses, low-temperature photoluminescence, Optical transmission, Rare earth ions

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