Comparative study reveals enhanced thermometric performance in Dy3+ -doped CaMoO4 versus SrMoO4, suggesting better applications for temperature sensing.
Key Points
The study aims to assess the impact of A-site cations on the thermometric performance of Dy3+ -doped AMoO4 phosphors.
Conducted photoluminescence analysis on Dy3+ -doped AMoO4 phosphors (A = Ca, Sr).
Recorded temperature-dependent PL spectra between 303 and 503 K.
Analyzed fluorescence intensity ratios from thermally coupled Dy3+ transitions.
Dy3+ :CaMoO4 exhibited stronger excitation and emission intensities than Dy3+ :SrMoO4.
Maximum relative sensitivities were 1.02% K−1 for CaMoO4 and 0.66% K−1 for SrMoO4.
The sensitivity values indicate the potential of these phosphors for optical thermometry applications.