The photoconductance of a single CdS nanoribbon
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Semiconductor nanowires and nanoribbons are being considered as the basis of a variety of device technologies. Recently, ZnO nanowire ultraviolet photodetectors and optical switches have been investigated . The results suggest that they are good candidates for optoelectronic switches. Zhou et al.  reported the UV response of SnO2 nanowires and observed a strong modulation of the conductance in SnO2 nanowire by UV illumination. CdS is an important semiconductor with a direct band gap of 2.42 eV that falls in the visible region at room temperature. CdS thin films have excellent photoconductive properties and were used in a large number of solid-state device applications such as photoconductive (PC) detection, xerography, photo-voltaic solar energy conversion, and thin-film transistor electronics. But up to now, only a relatively small effort has been paid to study the photoconductance of CdS nanoribbons  and a single nanowire , no one reported the...
KeywordsDecay Time Light Illumination Illumination Intensity Perfect Single Crystal SnO2 Nanowires
The work was supported by a grant from Natural Science Foundation of Educational Council of Yunnan Province (No. 5Z0098A) and the Research Grants Council of the Hong Kong SAR, China [No. CityU 3/01C (8730016)], a Strategic Research Grant of Hong Kong University [No. 7001175].
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