Visible luminescence from europium-doped alumina sol-gel-derived films confined in porous anodic alumina

被引:26
作者
Molchan, IS
Gaponenko, NV
Kudrawiec, R
Misiewicz, J
Bryja, L
Thompson, GE
Skeldon, P
机构
[1] Belarussian State Univ Informat & Radiotelect, Minsk 220027, BELARUS
[2] Wroclaw Univ Technol, Inst Phys, PL-50370 Wroclaw, Poland
[3] Univ Manchester, Inst Sci & Technol, Ctr Corros & Protect, Manchester M60 1QD, Lancs, England
关键词
sol-gel method; photoluminescence; porous anodic alumina; europium;
D O I
10.1016/S0925-8388(02)00087-7
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 work, we report on strong photoluminescence (PL) of europium-doped alumina sol-gel-derived films fabricated onto porous anodic alumina of 30 mum thickness. The PL spectra represent a set of peaks typical for Eu3+ ions with the maximum at 617 nm. PL intensity was found to increase with increase of Eu content in xerogel. Cooling the samples from 300 to 10 K leads to an increase in PL intensity. Eu PL increases nearly linearly with the excitation power within a range up to 25 mW/cm(2). Red Eu-related PL from all of the samples is visible to the naked eye even at room temperature. (C) 2002 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:251 / 254
页数:4
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