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Published on: June 18, 2013
Single-crystalline Bi(2)S(3) nanowire network film and its optical switches
Haifeng Bao1, Chang Ming Li, Xiaoqiang Cui
1School of Chemical and Biomedical Engineering, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore. Center for Advanced Bionanosystems, Nanyang Technological University, 70 Nanyang Drive, 637457, Singapore.
Abstract:
A single-crystalline bismuth sulfide (Bi(2)S(3)) nanowire network film at a centimeter scale is fabricated by the facile hydrothermal method. The Bi(2)S(3) film is easily tape-transferred onto a soft plastic substrate, and is further used to fabricate optical switches by screen-printing an Ag electrode array on its top. Our studies demonstrate that the Bi(2)S(3) nanowire network has a pronounced increase in conductance upon exposure to visible light, and possesses a very fast response time of about 2 ms. This work provides a simple and economic method to fabricate a high performance optical switch array and could offer great potential for a low cost, mass-manufacturing process.
