Gd2O3:Er/Yb纳米线的发光特性
Luminescence Properties of Gd2O3:Er/Yb Nanowires
DOI: 10.12677/NAT.2017.72005, PDF, HTML, XML, 下载: 1,559  浏览: 4,260  国家自然科学基金支持
作者: 杨林梅, 史桂梅：沈阳工业大学，辽宁 沈阳
关键词: 纳米线；上转换发光；荧光分支比；热激活；Nanowires； Up-Conversion Luminescence； Luminescence Intensity Ratio； Thermal Actived
摘要: 采用水热法制备了Gd2O3:Er/Yb纳米线，使用980 nm和488 nm激光作为激发光源，研究了Gd2O3:Er/Yb纳米线的上转换和下转换发光特性。研究发现，随着激发功率密度的增大和温度的升高，2H11/2-4I15/2和4S3/2-4I15/2的发射强度之比明显增大，这种现象被归因于电子的热激活速率增大，2H11/2和4S3/2能级上的电子布居数的改变。
Abstract: The Gd2O3: Er/Yb nanowires were prepared by the hydrothermal method. Luminescence properties, mechanism and dependence of luminescence intensity on pump power density were researched. In Gd2O3:Er/Yb nanowires, the intensity ratio of 2H11/2-4I15/2 to 4S3/2-4I15/2 increased dramatically with the pump power increasing, which was attributed to the increase of thermal populations in 2H11/2 energy level caused by irradiation induced temperature increase.
文章引用：杨林梅, 史桂梅. Gd2O3:Er/Yb纳米线的发光特性[J]. 纳米技术, 2017, 7(2): 40-46. https://doi.org/10.12677/NAT.2017.72005

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