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掺杂Eu和Tb离子的一维稀土氧化物发光材料因具有与其体相材料不同的光谱特性在近年来引起了人们的极大研究兴趣.(Gd0.9Eu0.1)(OH)3和(Gd0.9Tb0.1)(OH)3纳米棒前驱物通过水热法首先被合成,然后经退火处理得到Gd2O3:RE3+(RE:Eu,Tb)纳米棒.FE-SEM的形貌测试结果表明,Gd2O3:RE3+(RE:Eu,Tb)纳米棒有约为20~60nm直径和200~500nm长度.XRD的结构测试证实,所得到的Gd2O3:RE3+(RE:Eu,Tb)纳米棒样品均属于立方晶系.光谱测试结果表明,同体相材料相比,Gd2O3:RE3+(RE:Eu,Tb)纳米棒的Eu3+和Tb3+的特征发光峰出现了宽化现象,样品的纳米表面效应可能是导致其发光峰宽化的主要原因.

参考文献

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