Luminescent Properties of Eu Doped Alkaline-Earth Silicon Oxynitride Glasses

来源 :The 3rd International Symposium on Rare Earth Resource Utili | 被引量 : 0次 | 上传用户：chengyingying

【摘要】

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【出处】

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The 3rd International Symposium on Rare Earth Resource Utili

【发表日期】

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2012年8期

【关键词】

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Luminescence oxynitride glasses Eu2O3

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　　All Samples of alkaline-earth silicon oxynitride glass were synthesized by conventional high-temperature melting reaction.The starting materials were MCO3(M=Ca、 Sr、 Ba), SiO2 and Si3N4, fluoride and boron oxide used as flux.Spectra of Eu2O3 doped MO-SiO2-Si3N4 (M=Sr, Ba) glasses show sharp emission peaks between 570 and 650 nm peaking at 615nm for the 4f-4f transition of Eu3+, The fluorescence emission of Eu2O3 doped CaO-SiO2-Si3N4 glass consists of a strong emission band from 400 to 580 nm and weak emission peaks between 570 and 650 nm.The sharp emission peaks assigned to the transitions of 5Do-7Fj of Eu3+ ion, while the broad band can be ascribed to the 5d-4f transition of Eu2+ ion, indicating that valence change from Eu3+ to Eu2+ was observed in CaO-SiO2-Si3N4 glasses.

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Luminescent Properties of Eu Doped Alkaline-Earth Silicon Oxynitride Glasses

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