摘要
采用电化学阳极氧化法在钛箔表面制备了TiO2纳米管阵列膜层,形成TiO2纳米管柔性光阳极并应用于染料敏化太阳电池(DSSC)。用X射线衍射、扫描电镜及紫外可见光谱仪对纳米管阵列的物相、微观形貌及光学性能进行表征,探讨了阳极氧化时间和TiCl4处理对TiO2纳米管光阳极组装DSSC光电性能的影响。结果表明,500℃热处理后,出现明显的锐钛矿型TiO2的特征峰,且TiO2纳米管阵列垂直取向、排列紧密,长度约为23.17μm,其吸光度比TiO2纳米颗粒薄膜高;与未经TiCl4处理相比,经TiCl4处理的氧化时间为9 h的TiO2纳米管组装DSSC的光电转换效率提高了5.80%,其开路电压为0.76 V,短路电流密度为6.92 mA·cm-2,填充因子为0.45,光电转换效率达到2.37%。
The TiO2 nanotube array film was prepared on the titanium foil by the electrochemical anodization method, and the formed TiO2 nanotubes were used as the flexible photoanodes in dye-sensitized solar cells （DSSCs）. The phases, mieromorphology and optic properties of the as- prepared TiO2 nanotube arrays were characterized by X-ray diffraction （XRD）, scanning electron microscope （SEM） and ultraviolet-visible （UV-VIS） absorption spectra. The effects of the anodization time and TiCL treatment on photoelectric properties of the DSSC assembled with the TiO2 nanotubes were studied. The results show that the obvious characteristic peak of anatase TiO2 is formed after annealed at 500 ℃. The as-prepared TiO2 nanotubes are of compact array and vertical-alignment with the length of 23.17 μm. The absorbance of TiO2 nanotubes was higher than that of TiO2 nanoparticle films. Compared with the DSSC of TiO2 nanotubes without the treatment by TIC14, through the anodization time of 9 h after the treatment with TIC14, the photovoltaic conversion efficiency of the DSSC of TiO2 nanotubes increases by 5.80%. The optimal performances of the DSSC based on TiO2 nanotubes were achieved after the TIC14 treatment, including the open-circuit voltage of 0.76 V, short-cireuit current density of 6.92 mA · cm^-2, fill factor of 0.45 and photovoltaic conversion efficiency of 2.37%.
出处
《微纳电子技术》
CAS
北大核心
2014年第11期702-706,742,共6页
Micronanoelectronic Technology
基金
住房和城乡建设部科学技术项目(2013-K4-8)
大连市科技平台建设资助项目(2010-354)
