Preparation of Ti foil-based TiO2 film containing rutile sea urchin-like microspheres covered with anatase nanotubes self-organized layer and its application in dye-sensitized solar cells
Preparation of Ti foil-based TiO2 film containing rutile sea urchin-like microspheres covered with anatase nanotubes self-organized layer and its application in dye-sensitized solar cells
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锐钛矿纳米管自组织层包覆金红石海胆状微球钛箔基TiO2薄膜的制备及其在染料敏化太阳能电池中的应用
DOI：
10.1016/j.electacta.2017.07.035
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发表时间：
2017-09
影响因子：
6.6
通讯作者：
Sonu Kyong Su
中科院分区：
文献类型：
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作者：
Ri Jin Hyok;Wu Shufang;Jin Jingpeng;Peng Tianyou;Kim Byol;Sonu Kyong Su
采用两步水热法制备了含有金红石型海胆状多层微球和自组织锐钛矿型纳米管层的钛箔二氧化钛薄膜。TiCl4溶液的第一步水热处理在钛箔上形成了一层厚厚的金红石薄膜，其中平均尺寸为5~6μm的海胆状金红石微球由直径为∼200 nm、长度为1~2μm的纳米棒组成。第二步水热处理后，在其表面形成了一层直径为10 nm的锐钛矿型纳米管(ANT)自组织层，形成了钛箔基∼/ANT复合膜。采用钛箔RMS/ANT薄膜作为光阳极的染料敏化太阳能电池的效率达到5.42%，远好于单一RMS薄膜的0.73%。RMS薄膜上的蚂蚁薄层不仅可以提高染料的负载量，而且可以延缓电荷的复合。所有这些都导致了比单一RMS薄膜太阳能电池更高的光电流和更好的光伏转换效率。上述结果为提高金红石基太阳能电池的光伏性能提供了一条有效的途径，通过设计具有分层结构的光阳极材料来弥补金红石固有的缺点，如与锐钛矿型相比，金红石型太阳能电池的染料载量低和导电性差。
Ti foil-based TiO2films containing rutile sea urchin-like hierarchical microspheres covered with self-organized anatase nanotubes layer were fabricated through two-step hydrothermal processes. The first-step hydrothermal treatment of TiCl4solution caused a thick rutile film on Ti foil, in which the sea urchin-like rutile microspheres (RMS) with mean size of 5–6 μm are composed of nanorods with ∼200 nm diameter and 1–2 μm length. After the second-step hydrothermal treatment, a thin self-organized layer of anatase nanotubes (ANT) with ∼10 nm diameter formed on those RMS to form Ti foil-based RMS/ANT composite film. The corresponding dye-sensitized solar cell using the Ti foil-based RMS/ANT film as photoanode achieved an efficiency of 5.42%, much better than that (0.73%) of the single RMS film-based one. The thin ANT layer on the RMS film can not only enhance the dye-loading, but also retard the charge recombination. All these lead to higher photocurrent and better photovoltaic conversion efficiency than the single RMS film-based solar cell. The above results present an efficient approach to improve the photovoltaic performance of the rutile-based solar cells by designing photoanode materials with hierarchical structures to counterbalance rutile’s inherent shortages such as low dye-loading and poor conductivity as compared with anatase.
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影响因子：
3.7
作者：
Wu‐Qiang Wu;Yang-Fan Xu;Hua‐Shang Rao;C. Su;D. Kuang
通讯作者：
Wu‐Qiang Wu;Yang-Fan Xu;Hua‐Shang Rao;C. Su;D. Kuang
影响因子：
6.7
作者：
Xukai Xin;Jun Wang;W. Han;M. Ye;Zhiqun Lin
通讯作者：
Xukai Xin;Jun Wang;W. Han;M. Ye;Zhiqun Lin
影响因子：
9.5
作者：
Su, Haijun;Zhang, Mingyang;Feng, Shien-Ping
通讯作者：
Feng, Shien-Ping
影响因子：
8.6
作者：
Wang, Jun;Lin, Zhiqun
通讯作者：
Lin, Zhiqun
影响因子：
--
作者：
Fan, Ke;Chen, Junnian;Peng, Tianyou
通讯作者：
Peng, Tianyou