具有光透性的超长TiO_2纳米管阵列/FTO的制备及表征

Fabrication and Characterization of Transparent Super-long Titania Nanotube Arrays/FTO Electrode

采用电子束蒸发方法在透明导电玻璃FTO上沉积Ti金属薄膜,室温条件下在C2H6O2+NH4F中通过恒压阳极氧化法制备出超长TiO2纳米管阵列/FTO电极,并通过场发射扫描电子显微镜(FESEM),透射电子显微镜(TEM),X光电子能谱(XPS),X射线衍射(XRD)及光谱分析等方法对纳米管阵列/FTO电极进行了表征.研究表明,制备出的TiO2纳米管阵列内径43nm,管长5.4μm,经退火处理后得到长度为5μm锐钛矿相TiO2纳米管阵列/FTO透明电极,在可见光波长段的透射率为45%,在400nm波长处有一明显吸收峰.

Titanium film was deposited on fluorine-doped tin oxide-coated glass substrate（FTO） by electron beam evaporation（EBEAM）,ultra-long titania nanotube arrays/FTO electrode was fabricated by potentiostatic anodization of the titanium film in C2H6O2＋NH4F electrolyte at room temperature.The structure and the composition of the titania nanotube arrays/FTO electrode were characterized by field emission scanning electron microscope（FESEM）,transmission electron microscope（TEM）,X-ray photoelectron spectroscope（XPS）,X-ray diffraction（XRD） and transmission spectrometer.The results show that inner diameter and length of the as-prepared titania nanotube are 43nm and 5.4μm respectively.The titania nanotube arrays/FTO transparent electrode after annealing in air is of anatase phase with length of 5μm.The transmittance of the titania nanotube arrays is 45% in visible wavelength range and an absorbance peak is observed at wavelength of 400nm.