【摘 要】
：
本文采用高温固相反应法合成Dy3+、Sm3+单激活和共激活铝方柱石荧光粉材料,并对样品分别进行XRD,PL光谱,荧光寿命和色坐标等测试.结果表明合成的发光粉体均形成铝方柱石
【机 构】
：
新疆师范大学,新疆矿物发光材料及其微结构实验室,新疆乌鲁木齐830054
【出 处】
：
第六届全国掺杂纳米材料发光性质学术会议
论文部分内容阅读
本文采用高温固相反应法合成Dy3+、Sm3+单激活和共激活铝方柱石荧光粉材料,并对样品分别进行XRD,PL光谱,荧光寿命和色坐标等测试.结果表明合成的发光粉体均形成铝方柱石相.通过稳态和瞬态测试,找出了两个稀土离子的最佳掺杂浓度和分析稀土离子间能量传递的机理.实验证明,Dy3+离子的最佳浓度为1.5％,当Sm3+离子的浓度达到1.5％时,Dy3+、Sm3+离子的特征峰同时增强；当Sm3+离子继续增加到2.5％时,Sm3+离子红光发射达到最强,而Dy3+离子发射峰逐步减弱；Dy3+离子敏化了Sm3+离子特征发光,其能量传递方式为非辐射共振传递；通过调节两种稀土离子掺杂比例,可实现不同色温的颜色变化.最佳浓度时样品的色坐标(0.3364,0.3035)与标准白光色坐标范围内,色纯度较好.
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