Spectral difference between nanocrystalline and bulk Y2O3:Eu3+

被引：65

作者：

Peng, HS ^{[1
]}

Song, HW ^{[1
]}

Chen, BJ ^{[1
]}

Lu, SZ ^{[1
]}

Huang, SH ^{[1
]}

机构：

[1] Chinese Acad Sci, Key Lab Excited State Proc, Inst Opt Fine Machine & Phys, Changchun 130022, Peoples R China

来源：

CHEMICAL PHYSICS LETTERS | 2003年 / 370卷 / 3-4期

关键词：

D O I：

10.1016/S0009-2614(03)00033-2

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

In this Letter spectral difference between nanocrystalline yttria doped with europium (Y2O3:Eu3+) and the bulk ones was reported. Besides a 580.6-nm line similar to that in the bulk Y2O3:Eu3+, a new broad excitation line at 579.9 nm was observed in the nanocrystals (NCs). The lifetime of the 579.9-nm line became slightly shorter than that of the 580.6-nm line. The 579.9-nm line was attributed to the Eu3+ ions near the surface of the NCs. Due to numerous surface defects, the crystal field on the surface degenerated, leading the energy levels of the electrons in 4f state to shift. (C) 2003 Published by Elsevier Science B.V.

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页码：485 / 489

页数：5

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