Synthesis of porous Y2O3:Er plates with enhanced upconversion luminescence properties
Synthesis of porous Y2O3:Er plates with enhanced upconversion luminescence properties
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DOI：
10.1016/j.matlet.2013.02.084
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发表时间：
2013-05
影响因子：
3
通讯作者：
Q. Lu;Yanbing Hou;A. Tang;Xiao-jun Liu;F. Teng
中科院分区：
文献类型：
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作者：
Q. Lu;Yanbing Hou;A. Tang;Xiao-jun Liu;F. Teng
采用水热法合成了具有增强上转换发光性能的多孔Y2 O3：Er平板，并对其进行了后热处理。在980 nm泵浦下，产物呈现红色（650- 670 nm，4F 9/2→ 4 I15/2）和绿色（520- 570 nm，2 H11/2，4S 3/2→ 4 I15/2）发射带。板中孔的形状和尺寸可以通过控制高压釜中的反应时间来调节。此外，多孔结构诱导的表面缺陷，这极大地影响了上转换发光强度和衰减时间。探讨了表面缺陷对上转换发光强度和衰减时间影响的可能机制，为上转换发光提供了新的补充。
Porous Y2O3:Er plates with enhanced upconversion luminescence properties have been synthesized through a hydrothermal method, followed by a post thermal treatment. The as-obtained products exhibit red (650–670nm,4F9/2→4I15/2) and green emission bands (520–570nm,2H11/2,4S3/2→4I15/2) under 980nm pumping. The shape and size of the pores in the plates can be tuned by controlling the reaction time in the autoclave. Moreover, the porous structure induces surface defects, which greatly affect the upconversion luminescence intensity and decay time. The potential mechanism for the effects of surface defects on the upconversion intensity and decay time was investigated, which could be a new complement for upconversion luminescence.