Remarkable differences in photoluminescent properties between LaPO4:Eu one-dimensional nanowires and zero-dimensional nanoparticles

被引：96

作者：

Song, HW ^{[1
]}

Yu, LX ^{[1
]}

Lu, SZ ^{[1
]}

Wang, T ^{[1
]}

Liu, ZX ^{[1
]}

Yang, LM ^{[1
]}

机构：

[1] Chinese Acad Sci, Changchun Inst Opt Fine Mech & Phys, Key Lab Excited State Phys, Changchun 130033, Peoples R China

来源：

APPLIED PHYSICS LETTERS | 2004年 / 85卷 / 03期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1063/1.1773616

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Photoluminescent properties of zero-dimensional LaPO4:Eu nanoparticles (NPs) and one-dimensional nanowires (NWs) prepared by the same wet-chemical synthesis technique were studied and compared. The results indicate that in NP Eu3+ occupied only one site, A, while in NW Eu3+ occupied the same site, A and an additional site B due to crystal anisotropy. Furthermore, the electronic transition rate of D-5(1)-Sigma(J) F-7(J) in the NW increased from 14.9 to 28.9 ms(-1) compared to the NP, while the nonradiative transition rate of D-5(1)-D-5(0) decreased from 24.1 to 19.7 ms(-1). The luminescent quantum efficiency thus improved from 30% to 59%. This work demonstrates that a one-dimensional NW may be a more favorable device than a zero-dimensional NP for photoluminescence. (C) 2004 American Institute of Physics.

引用

页码：470 / 472

页数：3

共 20 条

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