Jindong Wang, Zhenxing Wang, Qiaochu Li, Lin Gan, Xinjun Xu, Prof. Lidong Li and Prof. Xuefeng Guo Revealing Interface-Assisted Charge-Transfer Mechanisms by Using Silicon Nanowires as Local Probes Angewandte Chemie International Edition 52
A semiconductor/environment interface has been formed in which suspended silicon nanowires (SiNWs) are in direct contact with photoactive TiO2 quantum dots. The photoactivity of TiO2 competes with the intrinsic photoresponses of p-type silicon nanowires. Rational control of the competitive mechanism realizes remarkable mirror-imaging photo-switching and superior rectifying effects in a single SiNW-based device.
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