Electrochemical luminescence of ZnGa2O4 and ZnGa2O4:Mn electrodes

被引：20

作者：

Ohtake, T ^{[1
]}

Sonoyama, N ^{[1
]}

Sakata, T ^{[1
]}

机构：

[1] Tokyo Inst Technol, Interdisciplinary Grad Sch Sci & Engn, Dept Elect Chem, Midori Ku, Yokohama, Kanagawa 2268502, Japan

来源：

CHEMICAL PHYSICS LETTERS | 1998年 / 298卷 / 4-6期

关键词：

D O I：

10.1016/S0009-2614(98)01214-7

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：

Semiconductor electrodes of ZnGa2O4 and ZnGa2O4:Mn were prepared by reducing ZnGa2O4 and ZnGa2O4:Mn sintered disks in a hydrogen stream. Under cathodic polarization in S2O82- electrolyte solution, electrochemical luminescence (ECL) was observed with a peak at 485 and 500 nm for the ZnGa2O4 and ZnGa2O4:Mn electrodes, respectively. With increasing cathodic polarization, the 500 nm emission for the ZnGa2O4:Mn electrode shifted to 490 nm. The ECL is ascribed to the recombination between the electrons in the conduction band and the holes in the valence band for ZnGa2O4 or their recombination that takes place at the Mn2+ site for ZnGa2O4:Mn. (C) 1998 Elsevier Science B.V. All rights reserved.

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页码：395 / 399

页数：5

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