Highly crystalline Titania nanotube arrays realized by hydrothermal vapor route and used as front-illuminated photoanode in dye sensitized solar cells

Highly crystalline Titania nanotube arrays realized by hydrothermal vapor route and used as front-illuminated photoanode in dye sensitized solar cells
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通过水热蒸气途径实现的高结晶二氧化钛纳米管阵列并用作染料敏化太阳能电池中的前照式光电阳极

DOI:
10.1016/j.jpowsour.2015.02.150
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发表时间:
2015-06
影响因子:
9.2
通讯作者:
Yi Jiang
Yi Jiang
中科院分区:
工程技术2区
文献类型:
--
作者:
Tao Zeng;Hangjian Ni;Xiaoli Su;Yuxia Chen;Yi Jiang

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在水热条件下处理非晶TiO2纳米管阵列(TNTAs)薄膜,可以获得高结晶度的TNTAs薄膜。独立的TNTAs膜可以从Ti箔剥离,其在移植程序之后用作基于FTO衬底的光阳极。与热退火(TA)处理的TNTAs光阳极相比,HV处理的TNTAs光阳极具有光路长、电荷传输快、敏化剂分子易于吸附等优点,可获得较高的短路电流密度。值得注意的是,在180 °C下制备的N719染料敏化HV处理光阳极由于其分层结构,在可见光范围内表现出相对较高的光伏响应,在没有任何表面改性的情况下,其性能转换效率高达8.11%。该研究为温和结晶策略在提高基于TiO2纳米管阵列光阳极的DSSC性能方面的应用提供了理论依据。
Highly crystalline TiO2nanotube arrays (TNTAs) film is easily realized by treating its amorphous film under the hydrothermal vapor (HV) environment. The freestanding TNTAs film can be lift-off from the Ti foil, which serves as photoanode based on FTO substrate after the transplanting procedure. Compared to the thermal annealing (TA) treated TNTAs photoanode, the HV treated photoanode possesses some excellent properties, such as long optical path, fast charge transporting and easy adsorption of the sensitizer molecules, which can result in high short current density. Notably, the N719 dye sensitized HV treated photoanode prepared under 180 °C shows relatively high photovoltaic response in the visible range due to its hierarchical structure, which gives an impressive performance conversion efficiency of 8.11% without any surface modification. And the present work sheds light on the application of the mild crystalline strategy for performance improvement of the DSSCs based on TiO2nanotube arrays photoanode.
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