Mixing phosphors to improve the temperature measuring quality
authors Bolek, P; Zeler, J; Carlos, LD; Zych, E
nationality International
author keywords Luminescence thermometry; Mixed phosphors; Dual-mode thermometer; Bandgap engineering; YAG; Pr3+
abstract Using luminescent materials for temperature measuring is considered the perspective remote technique nowadays. Designing new materials which combine a wide operating range with satisfying relative thermal sensitivity (S-r) and temperature uncertainty values is still a challenge. In this paper, we study the luminescence properties and thermometric performance of a mixture of two phosphors. These are Ga-modified garnets -Y-3((AlGa2)-Ga-3) O-12:0.1%Pr and Y-3(Al1Ga4)O-12:0.1%Pr -already reported as dual-mode luminescent thermometers. We show a new concept to improve important thermometric parameters of luminescence thermometers. We prove that such a mixture offers a significantly flatter course of the relative thermal sensitivity vs. temperature with S-r around 1% K-1 over a broad temperature interval. Independently of which of the thermometric parameter is used, temperature measurement may be easily executed in the broad range of temperatures, 15-675 K. At the core of our concept is the use of two phosphors of the same crystal structure. This allows for the equally effective excitation of the two components of the mixture, while both use the same activator.
publisher ELSEVIER
issn 0925-3467
isbn 1873-1252
year published 2021
volume 122
digital object identifier (doi) 10.1016/j.optmat.2021.111719
web of science category 7
subject category Materials Science, Multidisciplinary; Optics
unique article identifier WOS:000710910900004
  ciceco authors
  impact metrics
journal analysis (jcr 2019):
journal impact factor 2.779
5 year journal impact factor 2.521
category normalized journal impact factor percentile 61.307
dimensions (citation analysis):
altmetrics (social interaction):