Photoluminescence properties of LiF bismuth silicate glass
作者： M Laya Krishnan , VV Kumar
DOI: 10.1063/1.5028831
关键词: Absorption edge 、 Raman spectroscopy 、 Color temperature 、 Analytical chemistry 、 Absorption (chemistry) 、 Materials science 、 Amorphous solid 、 Bismuth 、 Luminescence 、 Photoluminescence
摘要: The sample (60-X) Bi2O3-30SiO2-XLiF where X=10, 15, 25 were prepared by conventional melt quenching method. X-ray diffraction pattern conformed the amorphous nature of and a broad peak at 2θ=30°. Raman spectra confirmed that Bi can exist both network former (BiO3 pyramidal) modifier (BiO6 octahedral)in glass matrix. samples showing absorption 470nm is due to presence Bi2+ ions, because increasing optical basicity edge blue shifted. photoluminescence under 350nm excitation are two main peaks 430nm 630 nm Bi3+ respectively LBS yellow, 15LBS near bluish white 10LBS luminescence. color purity correlated temperature also calculated.
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