Synthesis and optoelectronic properties of silver-doped n-type CdS nanoribbons

Abstract

Sliver doped n-type CdS nanoribbons (NRs) were successfully synthesized by using Ag₂S as the dopant via a thermal co-evaporation method. The CdS:Ag NRs have wurtzite single-crystal structure with growth direction of [110]. Significantly, the conductivity of the CdS NRs increased ~6 orders of magnitude by silver doping. Moreover, the Ag doped CdS NRs showed much enhanced photoconductivity compared with the undoped ones, which will greatly favor the application of CdS nanostructures in high-performance nano-optoelectronic devices.

Keywords

CdS nanoribbons / silver doping / nanodevices / nano-field effect transistors / photoconductivity

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Acknowledgments

This work was supported by the National High Technology Research and Development Program of China (No. 2007AA03Z301), the National Natural Science Foundation of China (Grant Nos. 60806028, 20901021), the Program for New Century Excellent Talents in Universities of the Chinese Ministry of Education (No. NCET-08-0764), and the Special Foundation for Doctor of Hefei University of Technology (No. 2007GDBJ028).

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2014 Higher Education Press and Springer-Verlag Berlin Heidelberg