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1. 中国科学技术大学 少年班学院, 安徽 合肥 230026
2. 中国科学技术大学物理系, 安徽 合肥 230026
3. 中国科学技术大学 物理实验教学中心, 安徽 合肥 230026
收稿:2009-07-28,
修回:1900-1-2,
网络首发:2010-02-20,
纸质出版:2010-02-20
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任 琪, 代如成, 沈宇华, 等. 基于NaYF4 : Yb3+ , Er3+ 上转换发光材料的色彩设计[J]. 发光学报, 2010,31(1):69-74.
REN Qi, DAI Ru-cheng, SHEN Yu-hua, et al. Color Design Based on Upconversion Luminescence of NaYF4 : Yb3+, Er3+[J]. Chinese Journal of Luminescence, 2010, 31(1): 69-74.
采用共沉淀法制备β-NaYF
4
: Yb
3+
Er
3+
。X射线衍射图谱结果表明退火有利于β相生长。样品在970 nm处有一强烈吸收峰
利用980 nm激光激发样品
实现红、绿、蓝三色上转换发光;其中蓝光相对较弱
红、绿光的发射峰分别为521
539
659 nm。速率方程表明红、绿发射对应跃迁均是双光子过程
实验结果与理论分析相符。此外
对红、绿发射带面积比的研究表明激发功率和Yb
3+
掺杂量影响发光颜色;进而可实现简便的色彩设计。
paper
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