Effect of Y 3+ on structural environment and luminescence characteristics of novel SrGd 1.94-2x Eu 0.06 Y 2x O 4 phosphors for display and dosimetric applications
Source abstract
Abstract
Abstract The improved luminescent performance and color tuning owing to Y 3+ incorporation in SrGd 1.94-2x Eu 0.06 Y 2x O 4 phosphors were reported for the first time. The samples were synthesized by facile auto-combustion method. The phase identification, recognition of structural entities, morphological evolution and luminescence properties were examined by means of X-ray diffraction, FTIR, FESEM, TEM, UV–vis and photoluminescence (PL) studies. The sensitizing effect of Gd 3+ was modulated by metal ion (Y 3+ ) incorporation. The substitution of Y 3+ ions caused lattice shrinkage which alters the local crystal structure and elevates the asymmetric environment around Eu 3+ . Upon 276 nm UV excitation, SrGd 1.94-2x Eu 0.06 Y 2x O 4 phosphors showed intense red emission and high thermal stability up to 220 °C than Y 3+ free samples. Thermoluminescence (TL) studies of γ-irradiated SrGd 1.94-2x Eu 0.06 Y 2x O 4 samples exhibited broad TL profile and linear dose response in the dose range 10–80 Gy. Present research encourages the bright prospects of SrGd 1.94-2x Eu 0.06 Y 2x O 4 phosphors for display and TL dosimetry applications.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Radiation Detection and Scintillator Technologies · Perovskite Materials and Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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