http://scholars.ntou.edu.tw/handle/123456789/22748
Title: | Ultrahigh Sensitive Piezotronic Strain Sensors Based on a ZnSnO3 Nanowire/Microwire | Authors: | Jyh Ming Wu Cheng-Ying Chen Yan Zhang Kuan-Hsueh Chen Ya Yang Youfan Hu Jr-Hau He Zhong Lin Wang |
Keywords: | POLAR OXIDE ZNSNO3;SPONTANEOUS POLARIZATION;FUNDAMENTAL THEORY;OPTICAL-PROPERTIES;NANOWIRE;DIODES | Issue Date: | Apr-2012 | Publisher: | American Chemical Society | Journal Volume: | 6 | Journal Issue: | 5 | Start page/Pages: | 4369-4374 | Source: | ACS nano | Abstract: | We demonstrated a flexible strain sensor based on ZnSnO3 nanowires/microwires for the first time. High-resolution transmission electron microscopy indicates that the ZnSnO3 belongs to a rhombohedral structure with an R3c space group and is grown along the [001] axis. On the basis of our experimental observation and theoretical calculation, the characteristic I–V curves of ZnSnO3 revealed that our strain sensors had ultrahigh sensitivity, which is attributed to the piezopotential-modulated change in Schottky barrier height (SBH), that is, the piezotronic effect. The on/off ratio of our device is ∼587, and a gauge factor of 3740 has been demonstrated, which is 19 times higher than that of Si and three times higher than those of carbon nanotubes and ZnO nanowires. |
URI: | http://scholars.ntou.edu.tw/handle/123456789/22748 | ISSN: | 1936-0851 | DOI: | 10.1021/nn3010558 |
Appears in Collections: | 光電與材料科技學系 |
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