Improved moisture resistance of SrSO4:Sm3+ phosphors coated with SiO2
Source abstract
Abstract
Abstract SrSO 4 :Sm 3+ phosphors obtained by precipitation method are coated with SiO 2 and their photoluminescence (PL) degradation behavior is investigated. The SiO 2 coating is obtained by the ultrasonic sonochemical process using tetraethylorthosilicate (TEOS) as silicon coating reagent and the coating content is varied from 0.5 to 2 wt%. Powder X-ray diffraction (XRD) patterns, scanning electron microscopy (SEM), fluorescence spectrometer, and Fourier transform infrared spectrometer are employed to characterize the coating. Moisture resistances of coated SrSO 4 :Sm 3+ phosphors have been enhanced to a great degree without more loss of their optical properties based on the existence of the SiO 2 thin layer. The PL intensity of the coated phosphors decreases to ∼83% of the original value after 38 h soaking the phosphors in deionized water, while the uncoated phosphor decreases to ∼40%.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Perovskite Materials and Applications · Radiation Detection and Scintillator Technologies
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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