Effects of a low-temperature sulfidation process on the microstructural properties of ZnO nanowires: ZnS formation and nanoscale Kirkendall effect

被引：17

作者：

Ahn, H. B. ^{[2
]}

Lee, J. Y. ^{[1
,2
]}

机构：

[1] Inst for Basic Sci Korea, Ctr Nanomat & Chem React, Taejon 305701, South Korea

[2] Korea Adv Inst Sci & Technol, Dept Mat Sci & Engn, Taejon 305701, South Korea

来源：

CRYSTENGCOMM | 2013年 / 15卷 / 34期

关键词：

PHOTOCONDUCTIVITY; NANOSTRUCTURES; NANOCRYSTALS; LUMINESCENCE; NANORODS; ZNO/ZNS; FILMS;

D O I：

10.1039/c3ce40403j

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We report on the microstructural characterization of ZnO nanowires during a low-temperature sulfidation process. The morphology of ZnO-ZnS core-shell nanowires obtained for different reaction times was observed. After sulfidation, two different interfaces were observed between the crystalline ZnO core and nanostructured ZnS shell. One is flat {10 (1) over bar0} planes covered with a dense ZnS NP layer and the other is rough {10 (1) over bar0} planes covered with two porous layers of ZnO and ZnS NPs. Voids were formed inside the crystalline ZnO core, resulting in Kirkendall voids with a hexagonal shape and six symmetrically located {10 (1) over bar0} planes, which have lower surface energy compared to {11 (2) over bar0}. It is believed that these Kirkendall voids are considerably affected by surface energy.

引用

页码：6709 / 6714

页数：6

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