Structural and optical properties of ZnS/ZnO core/shell nanowires grown on ITO glass

被引：28

作者：

Brayek, A. ^{[1
,2
]}

Ghoul, M. ^{[1
]}

Souissi, A. ^{[1
]}

Ben Assaker, I. ^{[1
]}

Lecoq, H. ^{[2
]}

Nowak, S. ^{[2
]}

Chaguetmi, S. ^{[2
,4
]}

Ammar, S. ^{[2
]}

Oueslati, M. ^{[3
]}

Chtourou, R. ^{[1
]}

机构：

[1] Ctr Rech & Technol Energie, Lab Photovolta, Hammamm Lif 2050, Tunisia

[2] Univ Paris Diderot, ITODYS, Sorbonne Paris Cite, CNRS UMR 7086, F-75205 Paris, France

[3] Fac Sci Tunis, Unite Rech Spect Raman, Tunis 2092, Tunisia

[4] Univ 20 Aout 1955, Skikda 21000, Algeria

来源：

MATERIALS LETTERS | 2014年 / 129卷

关键词：

ZnO@ZnS core/shell nanowires; Electrodeposition; Type-II heterostructures; Optical properties; ZNO NANOSTRUCTURES; ZINC-OXIDE; PHOTOLUMINESCENCE; ELECTRODEPOSITION; ARRAYS; FILMS;

D O I：

10.1016/j.matlet.2014.04.192

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

ZnO@ZnS core/shell nanowires have been synthesized by an easy conversion process from ZnO nanowire precursors. Firstly, vertically aligned ZnO nanowires approximately 3 Am long and 200 nm in diameter were electrodeposited on an ITO-coated glass substrate. The surface of these wires was then converted into ZnS by immersion in an aqueous Na2S solution. After rigorous water and alcohol washing and air drying, the resulting hybrids were investigated by UV-visible absorption and photoluminescence spectroscopies. These showed an additional band in the visible region which cannot be attributed to the ZnO or ZnS band-gaps, but to a type-II interfacial transition between the valence band of ZnS and the conduction band of ZnO. This proves the relevance of the ZnO@ZnS/ITO nanostructures to potential solar cell applications. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：142 / 145

页数：4

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