Visible up-conversion luminescence in Er3+:BaTiO3 nanocrystals

被引：65

作者：

Zhang, HX ^{[1
]}

Kam, CH ^{[1
]}

Zhou, Y ^{[1
]}

Han, XQ ^{[1
]}

Buddhudu, S ^{[1
]}

Lam, YL ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Microelect Div, Photon Res Grp, Singapore 639798, Singapore

来源：

OPTICAL MATERIALS | 2000年 / 15卷 / 01期

关键词：

D O I：

10.1016/S0925-3467(99)00124-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Visible emissions at 548, 528 and 660 nm have been observed from the sol-gel derived nanocrystalline Er3+:BaTiO3 powders under infrared excitations at both 980 and 810 nm. Combined with the energy level structure of Er3+ 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 S-4(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. (C) 2000 Published by Elsevier Science B.V. All rights reserved.

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页码：47 / 50

页数：4

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