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白色荧光粉Ba2B2O5:Ce3+, Mn2+的发光性能及能量传递
作者:高少杰1 2 王智朋1 周玲玉1 李梦丽1  美1 王卓光1  聪1 李盼来1 王志军1* 杨志平1 
单位:(1. 河北大学物理科学与技术学院 河北 保定 071002 2. 河北大学公共外语教学部 河北 保定 071002) 
关键词:荧光粉 发光 能量传递 Ba2B2O5:Ce3+  Mn2+ 
分类号:O482.31
出版年,卷(期):页码:2018,46(7):0-0
DOI:
摘要:

采用高温固相法制备了系列荧光粉Ba2B2O5:Ce3+, Mn2+,研究了材料的发光性能。结果表明:Ba2B2O5:Ce3+, Mn2+在250~400 nm范围内有较强的吸收,且Ce3+到Mn2+存在能量传递,当Mn2+掺杂量合适时,材料发射白色光。Ce3+到Mn2+的能量传递机理为电偶极–电偶极相互作用,利用浓度猝灭方法计算得到了能量传递的临界距离为1.33 nm。测得Ba2B2O5:0.03Ce3+, 0.07Mn2+的色坐标为(0.309, 0.292),色温为6 036 K。当测试温度为150 ℃时,材料的发射强度仍可以保持为室温时的80.0%。表明Ba2B2O5:Ce3+, Mn2+在紫外基白光LEDs领域有一定的潜在应用价值。

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参考文献:
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