Photoluminescence properties of europium-doped porous silicon nanocomposites

被引：31

作者：

Moadhen, A

Elhouichet, H ^{[1
]}

Oueslati, M

Férid, M

机构：

[1] Fac Sci Tunis, Equipe Spect Raman, Phys Mat Condensee Lab, Tunis 1060, Tunisia

[2] Inst Natl Rech Sci & Tech, Hammam Lif 2050, Tunisia

来源：

JOURNAL OF LUMINESCENCE | 2002年 / 99卷 / 01期

关键词：

porous silicon; europium (III); photoluminescence; annealing;

D O I：

10.1016/S0022-2313(02)00322-8

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We present new results concerning the photoluminescence properties of europium (Eu3+) incorporated in porous silicon (PS) matrix. Eu3+ ions were embedded in the matrix by simple impregnation of PS layers in chloride solution of europium. Complete and uniform penetration of Eu3+ into the pores is proved from RBS study. The PL spectrum shows the existence of several peaks superposed to the PL band of PS. These peaks are related to level transitions in Eu3+. The effect of the ray excitation on the PL shows that energy transfer is not the principal route for radiative recombination. A systematic study of the PL versus annealing temperature was performed. It was found that the optimised PL spectrum is found after annealing at 1000degreesC. Low-temperature study of the PL shows an important increase of the intensity and a broadness of the peaks due to the appearance of a second crystallographic site. (C) 2002 Elsevier Science B.V. All rights reserved.

引用

页码：13 / 17

页数：5

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