摘要
In this work, Zn <sub>2</sub> GeO <sub>4</sub> nanowires (NWs) were successfully synthesized on Si(100) substrates through carbon thermal reduction and a vapor-liquid-solid method. The NWs were of around 100 nm diameter and high aspect ratio (AR > 150). High-resolution transmission electron microscopy studies indicate that the NWs are single-crystalline with [110] growth direction. Moreover, the atomic resolution high-angle annular dark-field and bright-field images of scanning transmission electron microscopy have distinguished the different elements. They also further identified the structure of Zn <sub>2</sub> GeO <sub>4</sub> and located the positions of the elements. Additionally, we have fabricated devices and measured the electrical properties of a single NW. It is remarkable that individual Zn <sub>2</sub> GeO <sub>4</sub> NW devices exhibited excellent optoelectronic properties with fast switching speed under 254 nm UV illuminations. Furthermore, with short wavelength UV illumination, as we soaked Zn <sub>2</sub> GeO <sub>4</sub> NWs in methyl orange solution, the methyl orange was degraded. Therefore, Zn <sub>2</sub> GeO <sub>4</sub> NWs have potential applications in UV photodetectors and degradation of organic pollutants. © 2014 American Chemical Society.