Ce、Pr共掺LSO多晶薄膜的溶胶-凝胶法制备及其发光性能

无机材料学报, 2016, 31(6): 647-651. doi: 10.15541/jim20150500

Ce、Pr共掺LSO多晶薄膜的溶胶-凝胶法制备及其发光性能

张晓欣 ^1, , 谢建军 ^2, , 范灵聪 ^3, , 林德宝 ^4, , 陈旭 ^5, , 施鹰 ^6,

1.上海大学材料科学与工程学院,上海,200444

2.上海大学材料科学与工程学院,上海,200444

3.上海大学材料科学与工程学院,上海,200444

4.上海大学材料科学与工程学院,上海,200444

5.上海大学生命科学学院,上海,200444

6.上海大学材料科学与工程学院,上海,200444

基金项目: 上海市科委科技基金(14520500300) National Natural Science Foundation of China(51172139) Shanghai Committee of Science and Technology,China(14520500300) 国家自然科学基金(51172139)

关键词：溶胶-凝胶法 , LSO薄膜 , 发光 , 旋涂法 , Ce3+,pr3+共掺杂

Fabrication and Luminescence Properties of Polycrystalline Ce, Pr Co-doped LSO Thin Films by Sol-Gel Method

Keywords： Sol-Gel , Lu2SiO5 films , luminescence , spin-coating method , Ce3+,Pr3+ co-doping

采用溶胶-凝胶法结合旋涂工艺在单晶硅(111)上制备了Ce3+、pr3+共掺杂的硅酸镥(Lu2SiO5)薄膜,采用X射线衍射(XRD)、扫描电镜(SEM)和荧光光谱(PL)对(Ce,Pr):Lu2SiO5薄膜的物相、表面形貌及发光性质进行了研究和表征.结果表明:薄膜样品在1000℃下形成了A-Lu2SiO5纯相;在1100℃下形成了B-Lu2SiO5纯相.经1100℃煅烧后,通过SEM可以观察到薄膜表面均匀、平整、无裂纹,晶粒大小为200～300 nm,旋涂10层的薄膜厚度约为320 nm.从PL谱中可以发现:在共掺杂体系里,pr3+在跃迁过程中,有一部分能量传递给Ce3+离子,使Ce3+产生特征能级跃迁,并且使Ce3+发射强度比单掺杂Ce3+时的发射强度更强.

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