Upconversion luminescence, intensity saturation effect, and thermal effect in Gd2O3 : Er-3,Yb3+ nanowires

	Upconversion luminescence, intensity saturation effect, and thermal effect in Gd2O3 : Er-3,Yb3+ nanowires
其他题名	论文其他题名
	Lei Y. Q.; Song H. W.; Yang L. M.; Yu L. X.; Liu Z. X.; Pan G. H.; Bai X.; Fan L. B.
	2005
发表期刊	Journal of Chemical Physics (IF:2.991[JCR-2019],2.835[5-Year])
ISSN	0021-9606
卷号	123 期号:17
摘要	In this paper, the upconversion luminescent properties of Gd2O3:Er3+,Yb3+ nanowires as a function of Yb concentration and excitation power were studied under 978-nm excitation. The results indicated that the relative intensity of the red emission (F-4(9/2)-I-4(15/2)) increased with increasing the Yb3+ concentration, while that of the green emission (S-4(3/2)/H-2(11/2)-I-4(15/2)) decreased. As a function of excitation power in ln-ln plot, the green emission of S-4(3/2)-I-4(15/2) yielded a slope of similar to 2, while the red emission of F-4(9/2)-I-4(15/2) yielded a slope of similar to 1. Moreover, the slope decreased with increasing the Yb3+ concentration. This was well explained by the expanded theory of competition between linear decay and upconversion processes for the depletion of the intermediate excited states. As the excitation power density was high enough, the emission intensity of upconversion decreased due to thermal quenching. The thermal effect caused by the exposure of the 978-nm laser was studied according to the intensity ratio of H-2(11/2)-I-4(15/2) to S-4(3/2)-I-4(15/2). The practical sample temperature at the exposed spot as a function of excitation power and Yb3+ concentration was deduced. The result indicated that at the irradiated spot (0.5x0.5 mm(2)) the practical temperature considerably increased.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/25007
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Lei Y. Q.,Song H. W.,Yang L. M.,et al. Upconversion luminescence, intensity saturation effect, and thermal effect in Gd2O3 : Er-3,Yb3+ nanowires[J]. Journal of Chemical Physics,2005,123(17).
APA	Lei Y. Q..,Song H. W..,Yang L. M..,Yu L. X..,Liu Z. X..,...&Fan L. B..(2005).Upconversion luminescence, intensity saturation effect, and thermal effect in Gd2O3 : Er-3,Yb3+ nanowires.Journal of Chemical Physics,123(17).
MLA	Lei Y. Q.,et al."Upconversion luminescence, intensity saturation effect, and thermal effect in Gd2O3 : Er-3,Yb3+ nanowires".Journal of Chemical Physics 123.17(2005).

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