Lu Ming-Pei, Song Jinhui, Lu Ming-Yen, Chen Min-Teng, Gao Yifan, Chen Lih-Juann, Wang Zhong Lin
National Nano Device Laboratories, Hsinchu, Taiwan 30078.
Nano Lett. 2009 Mar;9(3):1223-7. doi: 10.1021/nl900115y.
Using phosphorus-doped ZnO nanowire (NW) arrays grown on silicon substrate, energy conversion using the p-type ZnO NWs has been demonstrated for the first time. The p-type ZnO NWs produce positive output voltage pulses when scanned by a conductive atomic force microscope (AFM) in contact mode. The output voltage pulse is generated when the tip contacts the stretched side (positive piezoelectric potential side) of the NW. In contrast, the n-type ZnO NW produces negative output voltage when scanned by the AFM tip, and the output voltage pulse is generated when the tip contacts the compressed side (negative potential side) of the NW. In reference to theoretical simulation, these experimentally observed phenomena have been systematically explained based on the mechanism proposed for a nanogenerator.
利用生长在硅衬底上的磷掺杂氧化锌纳米线（NW）阵列，首次证明了使用p型氧化锌纳米线进行能量转换。当通过导电原子力显微镜（AFM）以接触模式扫描时，p型氧化锌纳米线会产生正输出电压脉冲。当探针接触纳米线的拉伸侧（正压电势侧）时会产生输出电压脉冲。相比之下，当用AFM探针扫描时，n型氧化锌纳米线会产生负输出电压，并且当探针接触纳米线的压缩侧（负电势侧）时会产生输出电压脉冲。参照理论模拟，基于为纳米发电机提出的机制，对这些实验观察到的现象进行了系统的解释。
