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第 42 卷第 4 期Vol. 42 No. 4
2012 年 8 月Aug 2012

所屬欄目:功能材料

熔鹽法制備片狀Y2O3:Eu的研究
黃 燕,馮 姣,崔鮮偉,龔 園,彭 騫,鄒今文 (湖南理工學(xué)院 化學(xué)化工學(xué)院,湖南 岳陽(yáng) 4140003)
摘 要:為擴展熒光粉的適用范圍,采用均相沉淀-熔鹽法合成了片狀Y2O3:Eu紅色熒光粉,制備了表面平整光滑、分散性好的片狀Y2O3:Eu3+晶體,大小尺寸為1.5×2.5 μm、厚度為100~200 nm,是具有納米級厚度的薄片。其樣品沉淀劑的滴定速度也對前驅體的粒度有較大影響,C2O42-的濃度為0.5 mol/L。對熒光粉的發(fā)光性能進(jìn)行了分析,通過(guò)測量激發(fā)和發(fā)射光譜,于611 nm(5D0→7F2)產(chǎn)生高效的強發(fā)射。確定了合成條件對Y2O3:Eu形貌、粒徑及發(fā)光性能的關(guān)系。
關(guān)鍵詞:Y2O3:Eu;均相沉淀-復合熔鹽法;形貌;片狀
中圖分類(lèi)號:TQ174  文獻標識碼:A  文章編號:1009-9212(2012)04-0061-05
Study on Preparation of Y2O3:Eu by Molten Salt Method
HUANG Yan,FEN Jiao,CUI Xian-wei,GONG Yuan,PENG Qian,ZOU Jin-wen (College of Chemistry and Chemical Engineering,Hunan Institute of Science and Technology,Yueyang 414003,China)
Abstract:A red-emitting phosphor Y2O3:Eu flake was directly prepared by homogeneous precipitation-molten salt. The flake has a size of 1.5×2.5 μm,thickness of 100 to 200 nm,smooth surface and good dispersion. The experimental results showed that the titration speed of the precipitant had comparatively large influence upon the granularity of the precursor. The luminescence property of the phosphor was analyzed by measure of the fluorescence excitation and emission spectra. The maximum excitation wavelength was 611 nm. The influences of synthetic conditions on the morphology,particle size and luminescence of the phosphor were explored.
Key words:Y2O3:Eu;Homogeneous precipitation-molten salt method;feature;sheet
基金項目:湖南省自然科學(xué)基金資助項目(10JJ3081)。
作者簡(jiǎn)介:黃 燕(1963-),女,湖南岳陽(yáng)人,副教授,博士研究生,研究方向:功能材料。(E-mail:hy1107@163.com)
收稿日期:2011-12-02
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