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用水热法制备了金红石TiO2纳米棒阵列光阳极,并对样品进行XRD、SEM和HRTEM表征分析。文中研究了不同水热条件对金红石TiO2纳米棒阵列的生长形貌影响,详细探讨了其水热生长机理。结果表明:金红石纳米棒的直径和长度随着水热体系能量增加而增加;添加剂对金红石纳米棒的水热生长影响较大;在金红石TiO2纳米棒阵列光阳极水热生长过程中,会同导电玻璃衬底之间形成致密层,该致密层对DSSCs的光电转换性能影响较严重。将制备的金红石TiO2纳米棒阵列光阳极应用于DSSCs中,在AM 1.5 100 mW/cm2(air-mass 1.5,AM 1.5意为光线通过大气的实际距离为大气垂直厚度的1.5倍)标准条件下,测得1.81%的光电转换效率。
The rutile TiO2 nanorod arrays photoanode were prepared by hydrothermal method. The samples were characterized by XRD, SEM and HRTEM. In this paper, the influence of different hydrothermal conditions on the growth morphology of rutile TiO2 nanorod arrays was studied, and the mechanism of hydrothermal growth was discussed in detail. The results show that the diameter and length of the rutile nanorods increase with the increase of the energy of the hydrothermal system. The additives have a great influence on the hydrothermal growth of the rutile nanorods. During the hydrothermal growth of the rutile TiO2 nanorod arrays, A compact layer is formed between the substrates, which has a more serious effect on the photoelectric conversion performance of the DSSCs. The prepared rutile TiO2 nanorod array photoanode was applied to DSSCs under the standard conditions of AM 1.5 100 mW / cm2 (air-mass 1.5, AM 1.5 means the actual distance of light passing through the atmosphere is 1.5 times of the vertical thickness of the atmosphere) 1.81% photoelectric conversion efficiency was measured.