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Title: The impact of 2H9/24I13/2 emission from Er3+ ions on ratiometric optical temperature sensing with Yb3+/Er3+ co-doped upconversion materials

Journal Article · · Journal of Luminescence
ORCiD logo [1];  [2];  [1]; ORCiD logo [3]; ORCiD logo [1]; ORCiD logo [4];  [5]
  1. Univ. of Washington, Seattle, WA (United States)
  2. Univ. of New Mexico, Albuquerque, NM (United States)
  3. Univ. of Washington, Seattle, WA (United States); Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  4. Los Alamos National Lab. (LANL), Los Alamos, NM (United States)
  5. 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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