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Near‐Infrared Thermometer Based on Stark Energy Levels of Yb3+ in Garnet.
- Source :
-
Physica Status Solidi. A: Applications & Materials Science . Aug2024, Vol. 221 Issue 16, p1-8. 8p. - Publication Year :
- 2024
-
Abstract
- A Yb3+‐doped Gd3Al2Ga3O12 garnet (GAGG) Boltzmann thermometer is prepared and studied in this work. Due to the Boltzmann distribution of the population of Stark sublevels of Yb3+, the photoluminescence peaks of Yb3+ in the wavelength range of 950–1000 and 1000–1050 nm exhibit opposite temperature dependencies, which makes the luminescence intensity ratio (LIR) of two Yb3+ peaks work as a luminescence thermometer with a relative sensitivity of 1.6% K−1 at 200 K. It is worth nothing that this LIR value still follows the Arrhenius model at temperatures as low as 200 K. In these results, it is suggested that Yb3+‐doped GAGG thermometer can achieve high sensitivity for accurate temperature measurements. In addition, the accurate position of various Stark sublevels of Yb3+ in GAGG is obtained for the first time. In this work, it is confirmed that the Yb3+‐doped GAGG thermometer exhibits potential applications in the fields of microelectronics and biology. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 18626300
- Volume :
- 221
- Issue :
- 16
- Database :
- Academic Search Index
- Journal :
- Physica Status Solidi. A: Applications & Materials Science
- Publication Type :
- Academic Journal
- Accession number :
- 179091244
- Full Text :
- https://doi.org/10.1002/pssa.202400302