Synthesis and luminescence properties of Eu²⁺- and Ce³⁺-doped AlONs

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• 作者：Nailya S. Akhmadullina^a ; ^{nakhmadullina@mail.ru" class="auth_mail" title="E-mail the corresponding author} ; Anton S. Lysenkov^a ; Artem A. Ashmarin^a ; Alexander E. Baranchikov^b ; Aleksey V. Ishchenko^с ; Viktor V. Yagodin^с ; Boris V. Shul&rsquo ; gin^с ; Yury F. Kargin^a
• 关键词：Synthesis ; AlONs ; Rare-earth metals ; Luminescence
• 刊名：Ceramics International
• 出版年：2016
• 出版时间：January 2016
• 年：2016
• 卷：42
• 期：1
• 页码：286-293
• 全文大小：2358 K

文摘

Series of Eu²⁺- and Ce³⁺-doped aluminium oxynitrides Al₅O₆N were prepared using the standard sol–gel technique with following firing in the flow of N₂. Rare-earth metals oxides (Eu₂O₃ and CeO₂) and complexes (Eu(acac)₃ and Ce(acac)₃) were used as sources of doping ions. It was found that both concentration of ions and nature of precursor affect phase composition and luminescent properties of Al₅O₆N:Eu²⁺ and Al₅O₆N:Ce³⁺ materials. At low concentrations of Eu²⁺ and Ce³⁺ the significant content of α-Al₂O₃ and AlN is observed and the content of impurities is higher for samples prepared from Eu/Ce(acac)₃ comparing to samples prepared from oxides. The content of impurities decrease when the concentration of RE-ions increases to 0.1–0.2 at%, at higher concentration the formation of RE-aluminates is observed. The intensity of luminescence increases when content of RE ions increases to 0.5 at% for Al₅O₆N:Eu²⁺ and 0.1 at% for Al₅O₆N:Ce³⁺, at higher concentrations a quenching of luminescence is observed.