Novel porous CaSnO3:Eu3+ and Ca2SnO4:Eu3+ phosphors by co-precipitation synthesis and postannealing approach: A general route to alkaline-earth stannates
Novel porous CaSnO3:Eu3+ and Ca2SnO4:Eu3+ phosphors by co-precipitation synthesis and postannealing approach: A general route to alkaline-earth stannates
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DOI：
10.1016/j.jallcom.2010.03.065
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发表时间：
2010-05
影响因子：
6.2
通讯作者：
X. Chen;Chao Ma;Shikuan Bao;Hai Zhang
中科院分区：
文献类型：
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作者：
X. Chen;Chao Ma;Shikuan Bao;Hai Zhang
通过在高温下对相应的前驱体进行后处理，成功制备了新型多孔CaSnO3:Eu3+和Ca2SnO4:Eu3+荧光粉。首先在室温下用共沉淀法得到前驱体。用x射线粉末衍射（XRPD）和场发射扫描电镜（FESEM）对所制备的荧光粉进行了表征。光致发光激发光谱和发射光谱说明了CaSnO3:Eu3+和Ca2SnO4:Eu3+荧光粉的发红光性质。此外，通过引入一定种类的添加剂，可以得到形状各异的CaSnO3:Eu3+荧光粉。重要的是，这种简单的合成方法可以很容易地扩展到制备许多其他碱土锡酸盐，包括BaSnO3:Eu3+， Ba2SnO4:Eu3+， SrSnO3:Eu3+和Sr2SnO4:Eu3+荧光粉。
Novel porous CaSnO3:Eu3+and Ca2SnO4:Eu3+phosphors have been successfully prepared by postannealing the corresponding precursors at elevated temperatures. The precursors were firstly obtained by co-precipitation method at room temperature. The as-prepared phosphors were well characterized by means of X-ray powder diffraction (XRPD) and field emission scanning electron microscopy (FESEM). The photoluminescent excitation and emission spectra illustrate the red-emitting nature of CaSnO3:Eu3+and Ca2SnO4:Eu3+phosphors. Moreover, CaSnO3:Eu3+phosphors with various shapes were obtained by introducing certain kinds of additives. Importantly, this facile synthetic method can be readily extended to prepare many other alkaline-earth stannates including BaSnO3:Eu3+, Ba2SnO4:Eu3+, SrSnO3:Eu3+, and Sr2SnO4:Eu3+phosphors.