A Comprehensive Study of Nuanced Properties of Dy 3+ ‐Doped Alkaline Earth Silicates for Noncontact Thermometry Applications
Year: 2025
Type: article
Abstract: ABSTRACT Luminescence materials activated with rare‐earth ions for use in optical thermometers and lighting have garnered increasing attention in recent times. In this work, the problem has been tried to resolve by preparing Ba 2 ZnSi 2 O 7 : Dy 3+ phosphor. X‐ray diffraction shows their structure as monoclinic which was further confirmed by Rietveld refinement techniques. Optical studies have been done to confirm their luminescence properties. Stimulated at 351 nm, the as‐prepared phosphors show blue (469 nm) and yellow (577 nm) emissions. The 4 F 9/2 ➔ 6 H J (J = 13/2, 15/2) transitions of Dy 3+ ions are responsible for these emissions, and they were also utilized to optimize the dopant concentration. The latter has two types of fluorescence intensity ratios and a type of excitation intensity ratio with maximum relative sensitivities of 2.05% K −1 and 1.96% K −1 , respectively. Using an optimized phosphor, which exhibits good optical temperature measuring capabilities, a temperature measurement model was constructed using the fluorescence lifetime (FLT), with a maximum value of S R = 5.42% K −1 . The generated Dy 3+ ‐doped Ba 2 ZnSi 2 O 7 phosphors can thus be a good option for UV‐excitable warm lighting systems and noncontact optical thermometry measurements, in the light of every experimental finding.
Source: Luminescence
DOI: 10.1002/bio.70167
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: bronze
OpenAlex ID: W4409480713