Orthorhombic Pbcn SnO2 nanowires for gas sensing applications

被引：46

作者：

Arbiol, Jordi ^{[1
,2
]}

Comini, Elisabetta ^{[3
]}

Faglia, Guido ^{[3
]}

Sberveglieri, Giorgio ^{[3
]}

Ramon Morante, Joan ^{[2
]}

机构：

[1] Univ Barcelona, Serv Cienticotecn, TEM MAT, E-08028 Barcelona, Cat, Spain

[2] Univ Barcelona, Dept Elect, EME, CeRMAE,IN2UB, E-08028 Barcelona, Cat, Spain

[3] Univ Brescia, INFM, Sensor Lab, I-25133 Brescia, Italy

来源：

JOURNAL OF CRYSTAL GROWTH | 2008年 / 310卷 / 01期

关键词：

crystal structure; growth from vapor; nanomaterials; oxides; semiconductor gas sensors;

D O I：

10.1016/j.jcrysgro.2007.10.024

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

Pure monocrystalline orthorhombic SnO2 nanowires decorated and non-decorated with cassiterite SnO2 nanoclusters are analyzed and compared with pure monocrystalline cassiterite SnO2. We corroborate the coexistence of both, cassiterite and orthorhombic phases, having a higher growth speed for the cassiterite one, in the obtained nanowires by the evaporation/condensation technique. For both phases, the building blocks are the [SnO6]8(-) octahedron which are forming chains of edge-sharing octahedral along the [001] direction for the cassiterite phase, while in the orthorhombic phase, chains run in a zigzag fashion and contains four octahedra on each unit of chain instead of two previously reported for orthorhombic material obtained at high pressure conditions as Pbcn SnO2 orthorhombic structure. Results obtained reveal singular structural characteristics of these synthesized orthorhombic nanowires. (c) 2007 Elsevier B.V. All rights reserved.

引用

页码：253 / 260

页数：8

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