The energy transfer mechanism in Pr3+ and Yb3+ codoped beta-NaLuF4 nanocrystals

	The energy transfer mechanism in Pr3+ and Yb3+ codoped beta-NaLuF4 nanocrystals
	Xiang G. T.; Zhang J. H.; Hao Z. D.; Zhang X.; Pan G. H.; Luo Y. S.; Lu S. Z.; Zhao H. F.
	2014
发表期刊	Physical Chemistry Chemical Physics
ISSN	ISBN/1463-9076
卷号	16 期号:20 页码:9289-9293
摘要	The Pr3+ and Yb3+ codoped beta-NaLuF4 hexagonal nanoplates with a size of 250 nm x 110 nm were synthesized by a solvothermal process. X-Ray diffraction and scanning electron microscopy were used to characterize the crystal structure and morphology of the materials. The visible and near infrared spectra as well as the decay curves of Pr3+:P-3(0) level were used to demonstrate the energy transfer from Pr3+ ions to Yb3+ ions. The downconversion phenomenon has been observed under the direct excitation of the P-3(2) level of Pr3+. According to the analysis of the dependence of the initial transfer rate upon Yb3+ ion concentration, it indicates that the ET from Pr3+ ions to Yb3+ ions is only by a two-step ET process when the Yb3+ concentration is very low; however, with the increase of the Yb3+ concentration, a cooperative ET process occurs and gradually increases; when the Yb3+ ion concentration increases to 20 mol%, the ET from Pr3+ ions to Yb3+ ions occurs only by the cooperative ET process. When the doping concentration of Yb3+ ions reaches 20 mol% at a fixed concentration of Pr3+ ions (1 mol%), the theoretical quantum efficiency is 192.2%, close to the limit of 200%. The current research has great potential in improving the conversion efficiency of silicon solar cells.
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/181722/44452
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Xiang G. T.,Zhang J. H.,Hao Z. D.,et al. The energy transfer mechanism in Pr3+ and Yb3+ codoped beta-NaLuF4 nanocrystals[J]. Physical Chemistry Chemical Physics,2014,16(20):9289-9293.
APA	Xiang G. T..,Zhang J. H..,Hao Z. D..,Zhang X..,Pan G. H..,...&Zhao H. F..(2014).The energy transfer mechanism in Pr3+ and Yb3+ codoped beta-NaLuF4 nanocrystals.Physical Chemistry Chemical Physics,16(20),9289-9293.
MLA	Xiang G. T.,et al."The energy transfer mechanism in Pr3+ and Yb3+ codoped beta-NaLuF4 nanocrystals".Physical Chemistry Chemical Physics 16.20(2014):9289-9293.

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