Thermal plasma synthesis and optical properties of Zn2SnO4 nanopowders

被引：46

作者：

Lin, Hsiu-Fen ^{[1
,2
]}

Liao, Shih-Chieh ^{[2
]}

Hung, Sung-Wei ^{[2
]}

Hu, Chen-Ti ^{[1
]}

机构：

[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 31040, Taiwan

[2] Ind Technol Res Inst, Mat & Chem Res Lab, Chutung, Taiwan

来源：

MATERIALS CHEMISTRY AND PHYSICS | 2009年 / 117卷 / 01期

关键词：

DC thermal plasma; Zn2SnO4; Nanopowder; Optical properties; ZINC STANNATE; THIN-FILMS; SENSING CHARACTERISTICS; CURRENT-VOLTAGE; GROWTH; PHOTOLUMINESCENCE; NANOWIRES; PRECURSOR; CERAMICS; REGIME;

D O I：

10.1016/j.matchemphys.2009.05.007

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this research, we used the DC thermal plasma technique to produce well-crystallized zinc stannate (Zn2SnO4) nanopowders from commercial Zn-Sn alloy wire. The as-synthesized Zn2SnO4 consisted of spherical, rhombohedral and hexagonal shapes with an average size of about 35nm. The room-temperature photoluminescence spectroscopy of the Zn2SnO4 showed a UV emission at 390nm and visible emissions at 577, 651 and 671 nm. The UV emission was assigned to the near band-edge emission while the visible emissions were believed to be attributed by the residual strain, the crystal defects, the oxygen vacancies and the interstitial Zn during the growth process of ZTO2. According to UV-vis spectrum, the absorption edge of Zn2SnO4 is 367 +/- 5 nm, which corresponds to the band gap energy of 3.36 +/- 0.06 eV. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：9 / 13

页数：5

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