Photoluminescence of bulks and thin films of Eu3+-doped organic/inorganic hybrids

被引：16

作者：

Pecoraro, E. ^{[1
,2
]}

Ferreira, R. A. Sa ^{[1
]}

Molina, C. ^{[2
]}

Ribeiro, S. J. L. ^{[2
]}

Messsaddeq, Y. ^{[2
]}

Carlos, L. D. ^{[1
]}

机构：

[1] Univ Aveiro, CICECO, Dept Phys, P-3810193 Aveiro, Portugal

[2] UNESP, Inst Chem, BR-14801970 Araraquara, SP, Brazil

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2008年 / 451卷 / 1-2期

关键词：

europium; photoluminescence; organic-inorganic hybrids; thin films;

D O I：

10.1016/j.jallcom.2007.04.123

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：

Organic-inorganic hybrids formed by polyether-based chains grafted to both ends to a siliceous backbone through urea cross-linkages (-NHC=O)NH-), named di-ureasil, have been used as host for incorporation of Eu3+ in the form of EuCl3. The bulks and the thin films, both optically transparent, were characterized by excitation, absorption and emission spectroscopy. Photoluminescence results point out that the Eu3+ ions occupy, at least, two distinct local environments. Besides, the processing method (thin films or bulks) has influence on the energy levels of the hybrid host probably due to the lower degree of organization of the thin films structure. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：136 / 139

页数：4

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