Mechanically flexible hybrid mat consisting of TiO2 and SiO2 nanofibers electrospun via dual spinnerets for photo-detector

作者：Xi Min; Wang Xiaoxu; Zhao Yong; Feng Quan; Zheng Fan; Zhu Zhengtao^*; Fong Hao

来源：Materials Letters, 2014, 120: 219-223.

DOI：10.1016/j.matlet.2014.01.110

• Electrospinning
• Nanofibers
• Ceramics
• Semiconductors
• Photo-detector

A hybrid mat consisting of anatase-phase TiO2 nanofibers (similar to 75 wt.%) and structurally amorphous SiO2 nanofibers (similar to 25 wt.%) was prepared for the first time by electrospinning with dual spinnerets followed by pyrolysis in air at 500 degrees C. Unlike many other TiO2 nanostructures, the TiO2/SiO2 hybrid mat was mechanically flexible; after being sensitized with N719 dye, the dye-sensitized mat was then assembled as a photo-detector for visible light. The fabricated photo-detector was also flexible; it exhibited excellent sensitivity and reproducibility/reversibility under varied light intensities, and it also showed high performance under the bending condition. Additionally, it is envisioned that the reported method could be a general approach for the preparation of flexible hybrid mats with different electrospun nanofibers of semiconducting metal oxides (e.g., TiO2 and ZnO) for various applications.

• 出版日期2014-4-1