The impact of 2H9/2 → 4I13/2 emission from Er3+ ions on ratiometric optical temperature sensing with Yb3+/Er3+ co-doped upconversion materials
- Univ. of Washington, Seattle, WA (United States)
- Univ. of New Mexico, Albuquerque, NM (United States)
- Univ. of Washington, Seattle, WA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
- Univ. of Washington, Seattle, WA (United States); Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Yb3+/Er3+ co-doped upconversion materials are widely used for luminescence intensity ratio (LIR) thermometry, where the relative intensity ratio of the green luminescence transitions (2H11/2 4I15/2 and 4S3/2 4I15/2 ) of Er3+ dopant ions changes with temperature. In this work we report on the impact of an additional transition from the 2H9/2 level to the intermediate 4I13/2 level, which overlaps with the green luminescence normally used for LIR thermometry. The 2H9/2 4I13/2 emission overlaps extensively with the 4S3/2 4I15/2 emission and is more sensitive to pump power. The wavelength intervals used to integrate both 2H11/2 4I15/2 and 4S3/2 4I15/2 luminescence need be selected carefully in order to achieve accurate temperature readouts.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE; National Science Foundation (NSF); US Air Force Office of Scientific Research (AFOSR)
- Grant/Contract Number:
- AC05-76RL01830; NNCI-1542101
- OSTI ID:
- 1797393
- Report Number(s):
- PNNL-SA-160779
- Journal Information:
- Journal of Luminescence, Vol. 236; ISSN 0022-2313
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
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