Morphology controllable synthesis of yttrium oxide-based phosphors from yttrium citrate precursors

• Published in: Journal of rare earths Vol. 29; no. 9; pp. 830 - 836
• Main Author: 黄满莲 郭凯 满振勇 陈昊鸿 杨昕昕 许钫钫 赵景泰
• Format: Journal Article
• Language: English
• Published: Elsevier B.V 01.09.2011; Key Laboratory of Transparent Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China; Graduate School of Chinese Academy of Sciences, Beijing 100039, China%Key Laboratory of Transparent Opto-Functional Inorganic Materials, Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 200050, China
• Subjects: Citrates; Microspheres; Morphology; phosphor; Precursors; rare earth compound; Rare earth metals; Synthesis; Yttrium; yttrium citrate precursor; Yttrium oxide; 光致发光特性; 前体; 可控; 形貌; 控制合成; 柠檬酸钠; 氧化钇; 荧光粉; yttrium citrate precursor; phosphor; morphology; yttrium oxide; rare earth compound
• ISSN: 1002-0721; 2509-4963
• DOI: 10.1016/S1002-0721(10)60551-0

A novel yttrium citrate-templated conversion method for morphology controlled synthesis of Y2O3 microspheres, microflowers and microsheets was reported for the first time. The precursors with controllable morphologies were synthesized with a homogenous precipitation method in aqueous solution without any surfactant. Y2O3 samples with well-preserved morphological architectures were obtained by a subse-quent thermal transformation strategy. The chemical formula of the precursor was identified and a two-stage growth mechanism was proposed. The effects of the aging time, reaction temperature, reactant concentration and molar ratio of yttrium nitrate to sodium citrate were discussed. The photoluminescence properties of the Y2O3：Eu3＋ microspheres, microflowers and microsheets prepared were also studied.