Green upconversion luminescence and temperature sensitivity of LaOF:Yb,Ho phosphors
The aim of this study is to synthesize green upconversion phosphors by introducing Yb and Ho into LaOF. Furthermore, we aim to use the obtained LaOF:Yb,Ho devices as temperature sensors. The results of the X-ray diffraction measurements showed that Tetragonal LaOF and Hexagonal LaF 3 were detected i...
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Veröffentlicht in: | Hanʼguk Seramik Hakhoe chi 2022, 59(6), 403, pp.889-894 |
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Hauptverfasser: | , , , |
Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | The aim of this study is to synthesize green upconversion phosphors by introducing Yb and Ho into LaOF. Furthermore, we aim to use the obtained LaOF:Yb,Ho devices as temperature sensors. The results of the X-ray diffraction measurements showed that Tetragonal LaOF and Hexagonal LaF
3
were detected in the samples that were sintered for 1 h. The photoluminescence characteristics were analyzed under excitation at a wavelength of 980 nm, and a strong emission was observed at a wavelength of 543 nm (
5
F
4
,
5
S
2
→
5
I
8
). The temperature sensor was found to be stable. Furthermore, the sample showed a relative sensitivity of around 0.004 K
−1
regardless of the temperature. |
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ISSN: | 1229-7801 2234-0491 2334-0491 |
DOI: | 10.1007/s43207-022-00231-y |