Synthesis of a δ-SnS polymorph by electrodeposition

被引：37

作者：

Brownson, Jeffrey R. S. ^{[1
]}

Georges, Cecile ^{[1
]}

Levy-Clement, Claude ^{[1
]}

机构：

[1] Lab Chim Met Terres Rares, CNRS, UPR 209, F-94320 Thiais, France

来源：

CHEMISTRY OF MATERIALS | 2006年 / 18卷 / 26期

关键词：

D O I：

10.1021/cm061841t

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：

A new SnS polymorph (delta-SnS) has been obtained by cathodic electrodeposition on SnO2:F glass electrodes from warm (50-90 degrees C) acidic solutions with tartaric acid. Characterizations of the as-deposited films by energy dispersive spectroscopy confirm a 1:1 Sn/S chemistry, X-ray diffraction shows that delta-SnS has a primitive orthorhombic symmetry, and UV/vis spectroscopy shows a direct optical band gap of 1.05 eV. The structure was converted to the alpha-SnS phase (reduced a and c lattice constants, direct optical transition of 1.2 eV) following argon annealing above 270 degrees C. Scanning electron microscopy images indicate pseudomorphic replacement of plate-like nanoparticles after annealing.

引用

页码：6397 / 6402

页数：6

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