Luminescence properties of oxide films formed by anodization of aluminum in 12-tungstophosphoric acid

被引：49

作者：

Stojadinovic, S. ^{[1
]}

Vasilic, R. ^{[2
]}

Petkovic, M. ^{[1
]}

Nedic, Z. ^{[3
]}

Kasalica, B. ^{[1
]}

Belca, I. ^{[1
]}

Zekovic, Lj. ^{[1
]}

机构：

[1] Univ Belgrade, Fac Phys, Belgrade 11000, Serbia

[2] Educons Univ, Fac Environm Governance & Corp Responsibil, Vojvode Putnika Bb, Sremska Kamenic, Serbia

[3] Univ Belgrade, Fac Phys Chem, Belgrade 11000, Serbia

来源：

ELECTROCHIMICA ACTA | 2010年 / 55卷 / 12期

关键词：

Barrier oxide films; 12-Tungstophosphoric acid; Galvanoluminescence; Photoluminescence; PEO; HIGH-PURITY ALUMINUM; INORGANIC ELECTROLYTES; GALVANOLUMINESCENCE SPECTRA; OPTICAL-PROPERTIES; ANODIC FILMS; BREAKDOWN; SYSTEM;

D O I：

10.1016/j.electacta.2010.02.011

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

In this paper, we have investigated luminescence properties of oxide films formed by anodization of aluminum in 12-tungstophosphoric acid. For the first time we have measured weak luminescence during anodization of aluminum in this electrolyte (so-called galvanoluminescence GL) and showed that there are wide GL bands in the visible region of the spectrum and observed two dominant spectral peaks. The first one is at about 425 nm, and the second one shifts with anodization voltage. As the anodization voltage approaches the breakdown voltage, a large number of sparks appear superimposed on the anodic GL.. Several intensive band peaks were observed under breakdown caused by electron transitions in W, P, Al, O, H atoms. Furthermore, photoluminescence (PL) of anodic oxide films and anodic-spark formed oxide coatings were performed. In both cases wide PL bands in the range from 320 nm to 600 nm were observed. (C) 2010 Elsevier Ltd. All rights reserved.

引用

页码：3857 / 3863

页数：7

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