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A Comparable Study on the Arrays of Aligned ZnO Nanowires and TiO2 Nanotubes for Applications of Dye- sensitized Solar Cells
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Priority Academic Program Development of Jiangsu Higher Education Institutions


A Comparable Study on the Arrays of Aligned ZnO Nanowires and TiO2 Nanotubes for Applications of Dye- sensitized Solar Cells
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    摘要:

    首先通過(guò)水熱法在透明導(dǎo)電基底上合成出垂直有序的ZnO納米線陣列，再對(duì)這些ZnO納米線進(jìn)行表面處理以得到TiO2納米管陣列。隨后，這些納米線（管）陣列被用作光陽(yáng)極組裝染料敏化太陽(yáng)電池（DSSC），以探索它們的光電化學(xué)性能。通過(guò)研究發(fā)現(xiàn)，用TiO2納米管陣列組裝而成的DSSC具有0.81%的太陽(yáng)能轉(zhuǎn)換效率，高出ZnO納米線陣列組裝而成的DSSC 3倍以上。另外，還運(yùn)用一個(gè)簡(jiǎn)單的二極管模型對(duì)這些DSSC的伏安特性（J-V）曲線進(jìn)行分析。最終發(fā)現(xiàn)，造成DSSC性能大幅度提高的原因在于其內(nèi)部并聯(lián)電阻的增加以及泄漏電流的下降。

    Abstract:

    Vertically aligned ZnO nanowire array (NWA) was synthesized on the transparent conductive substrates by a facile hydrothermal method. Then, TiO2 nanotube array (NTA) was obtained by a successive treatment of the ZnO NWA. Moreover, two dye-sensitized solar cells (DSSCs) were fabricated using these samples as the photoanodes in order to investigate their photoelectrochemical performance. It is found that TiO2 NTA demonstrates a power conversion efficiency of ~0.81 %, which is three times higher than ZnO NWA. The DSSC devices were used with a simple diode model to evaluate the current-voltage (J-V) curves. Finally, it was revealed that the cell performance improvement is attributed to an increased shuttle resistance and a suppressed leakage current.

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顧修全,強(qiáng)穎懷,趙宇龍. A Comparable Study on the Arrays of Aligned ZnO Nanowires and TiO2 Nanotubes for Applications of Dye- sensitized Solar Cells[J].稀有金屬材料與工程,2014,43(6):1296~1299.[Gu Xiuquan, Qiang Yinghuai, Zhao Yulong. A Comparable Study on the Arrays of Aligned ZnO Nanowires and TiO2 Nanotubes for Applications of Dye- sensitized Solar Cells[J]. Rare Metal Materials and Engineering,2014,43(6):1296~1299.]
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  • 收稿日期:2013-06-25
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  • 在線發(fā)布日期: 2014-11-13
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