Coaxial silicon nanowires as solar cells and nanoelectronic power sources

Bozhi Tian, Xiaolin Zheng, Thomas J. Kempa, Ying Fang, Nanfang Yu, Guihua Yu, Jinlin Huang and Charles M. Lieber ()
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Bozhi Tian: Department of Chemistry and Chemical Biology,
Xiaolin Zheng: Department of Chemistry and Chemical Biology,
Thomas J. Kempa: Department of Chemistry and Chemical Biology,
Ying Fang: Department of Chemistry and Chemical Biology,
Nanfang Yu: School of Engineering and Applied Sciences, Harvard University, Cambridge, Massachusetts 02138, USA
Guihua Yu: Department of Chemistry and Chemical Biology,
Jinlin Huang: Department of Chemistry and Chemical Biology,
Charles M. Lieber: Department of Chemistry and Chemical Biology,

Nature, 2007, vol. 449, issue 7164, 885-889

Abstract: Wired for sun A new device based on coaxial silicon nanowires shows potential as a tiny photovoltaic element for use in solar cells and in nanoelectronic power sources. The nanowire is made of silicon with three different types of conductivity arranged as coaxial shells. Incoming light generates electrons in the outer n-type shell, whilst their positive holes are swept into a central 'p-type' layer. Current drawn from the photovoltaic nanowire can be used to power nanoelectronic sensors and logic gates.

Date: 2007
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DOI: 10.1038/nature06181

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