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首页> 外文期刊>Journal of Materials Research >The increased interface charge transfer in dye-sensitized solar cells based on well-ordered TiO_2 nanotube arrays with different lengths
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The increased interface charge transfer in dye-sensitized solar cells based on well-ordered TiO_2 nanotube arrays with different lengths

机译：基于不同长度的有序TiO_2纳米管阵列的染料敏化太阳能电池中界面电荷转移的增加

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摘要

The well-ordered TiO_2 nanotube arrays with controlled aspect ratio are fabricated via potentiostatic anodization. The aspect ratio of TiO_2 nanotube array can be tuned conveniently by changing the water content in electrolyte and anodization time. The formation of well-ordered TiO_2 nanotube array is good for the photogenerated electron transfer. So, the well-ordered TiO_2 nanotube array photoelectrodes have been used to fabricate dye-sensitized solar cells (DSSCs). It is found that, with the optimum nanotube length and aspect ratio, DSSCs with TiO_2 nanotube array photoelectrodes show better photoelectric conversion efficiency (2.60%) than that with TiO_2 nanoparticles on Ti foil photoelectrode. It is elucidated by the interfacial electron transport of DSSCs, which are characterized quantitatively, using the electrochemical impedance spectra. The DSSC with optimal nanotube length and aspect ratio displays the fastest interfacial electron transfer and longer electron lifetime.
机译：通过恒电位阳极氧化制备了具有可控纵横比的井井有条的TiO_2纳米管阵列。通过改变电解质中的水含量和阳极氧化时间可以方便地调节TiO_2纳米管阵列的长径比。规则排列的TiO_2纳米管阵列的形成有利于光生电子的转移。因此，有序的TiO_2纳米管阵列光电极已被用于制造染料敏化太阳能电池（DSSC）。结果表明，在最佳纳米管长度和长径比的条件下，TiO_2纳米管阵列光电极的DSSCs在钛箔光电极上的光电转换效率比TiO_2纳米颗粒的光电转换效率高（2.60％）。 DSSC的界面电子传输可以阐明这一点，它利用电化学阻抗谱进行了定量表征。具有最佳纳米管长度和纵横比的DSSC显示最快的界面电子转移和更长的电子寿命。

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  • 来源
    《Journal of Materials Research》 |2014年第6期|745-752|共8页
  • 作者

    Lihong Qi; Zhuoxun Yin; Shen Zhang; Qiuyun Ouyang; Chunyan Li; Yujin Chen;

  • 作者单位

    College of Science, Harbin Engineering University, Harbin 150001, People's Republic of China;

    College of Science, Harbin Engineering University, Harbin 150001, People's Republic of China;

    College of Science, Harbin Engineering University, Harbin 150001, People's Republic of China;

    College of Science, Harbin Engineering University, Harbin 150001, People's Republic of China;

    College of Science, Harbin Engineering University, Harbin 150001, People's Republic of China;

    College of Science, Harbin Engineering University, Harbin 150001, People's Republic of China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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  • 正文语种 eng
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