Blacking FTO by strongly cathodic polarization with enhanced photocurrent

作者：Xie, Yun; Lu, Xiaoqing; Huang, Wei^*; Li, Zelin

来源：Applied Surface Science, 2015, 347: 321-324.

DOI：10.1016/j.apsusc.2015.04.078

• Strongly cathodic polarization
• Black FTO
• Sn nanoparticle
• Photocurrent

Transparent fluorine-doped tin oxide (TFTO) coating on quartz glass is widely used as substrate in photoelectrochemistry for solar energy transformation, sensing and so on. We observed that the TFTO could become blackish by strongly cathodic polarization. Characterization of the black FTO (BFTO) by scanning electron microscopy, X-ray diffraction, and X-ray photoelectron spectroscopy revealed that part of SnO2 on the TFTO was reduced into metal Sn nanoparticles during the cathodic polarization. The BFTO greatly increased solar absorption and enhanced photocurrent responses in comparison with TFTO. It might be necessary to take caution in photoelectrochemical measurements while the FTO is strongly cathodically polarized.

• 出版日期2015-8-30
• 单位湖南师范大学