Formation and photoluminescence of pure hexagonal and monoclinic Sm2+/Sm3+ codoped BaAl2Si2O8 phase using a simple sol–gel technique
Source abstract
Abstract
The synthesis of pure hexagonal and monoclinic BaAl 2 Si 2 O 8 :Sm crystals using a simple sol–gel technique is discussed in detail. The pure hexagonal BaAl 2 Si 2 O 8 :Sm phase (H-BASO:Sm) can be obtained by adjusting the amount of the citric acid . The pure monoclinic BaAl 2 Si 2 O 8 :Sm phase (M-BASO:Sm) can be easily obtained by a three-step-calcinations process. Possibly it is the carbon existing in the crystal that can stabilize the hexagonal BaAl 2 Si 2 O 8 :Sm phase (H-BASO:Sm) and retard the conversion from the hexagonal to monoclinic phase. Photoluminescence , UV–vis absorption spectra and X-ray photoelectron spectra (XPS) demonstrate the existence of Sm 2+ and Sm 3+ ions in Sm doped H-BASO and M-BASO calcined under a reducing atmosphere. Photoluminescence properties of Sm 3+ and Sm 2+ ions in M-BASO and Sm 2+ ions in H-BASO are reported.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Luminescence Properties of Advanced Materials · Nuclear materials and radiation effects · Advanced Photocatalysis Techniques
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References (25)
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