Visible up-conversion luminescence in Er~3+:BaRiO_3 nanocrystals

H.X.Zhang; C.H.Kam; Y.Zhou

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Visible up-conversion luminescence in Er~3+:BaRiO_3 nanocrystals

机译：Er〜3 +：BaRiO_3纳米晶体中的可见上转换发光

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Visible emissions at 548, 528 and 660 nm have been observed from the sol-gel derived nanocrystalline Er~3+: BaTiO_3 powders under infrared excitations at both 980 and 810 nm. Combined with the energy level structure of Er~3+ and the decay kinetics of the green emissions, the up-conversion mechanism has been analyzed and explained. The bright green emission at 548 nm has been attributed to the ground state-directed transition from 4~S_3/2, which is populated through excited state absorption (ESA) for 810 nm excitation, and through both ESA and energy transfer (ET) processes for 980 nm excitation.

机译：从溶胶-凝胶衍生的纳米晶Er〜3 +：BaTiO_3粉末在980和810 nm的红外激发下均观察到了548、528和660 nm处的可见发射。结合Er〜3 +的能级结构和绿色发射的衰减动力学，分析并解释了上转换机理。 548 nm处的亮绿色发射归因于从4〜S_3 / 2的基态定向跃迁，该跃迁是通过810 nm激发态的吸收（ESA）以及ESA和能量转移（ET）过程而形成的980 nm激发。

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《Optical Materials》 |2000年第1期|p.47-50|共4页
作者
H.X.Zhang; C.H.Kam; Y.Zhou;
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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
中图分类工程材料学;
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Visible up-conversion luminescence in Er~3+:BaRiO_3 nanocrystals

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