High-efficiency dye-sensitized solar cells with hierarchical structures titanium dioxide to transfer photogenerated charge

	High-efficiency dye-sensitized solar cells with hierarchical structures titanium dioxide to transfer photogenerated charge
	Zhao, P. L.; S. T. Yao; M. Wang; B. Wang; P. Sun; F. M. Liu; X. S. Liang; Y. F. Sun and G. Y. Lu
	2015
发表期刊	Electrochimica Acta
卷号	170 页码:276-283
摘要	Hierarchical TiO2 nanorod-sheet-flowers (TNRSFs) consisting of one dimensional (1D) vertically aligned rutile TiO2 nanorods array (TNRA), 2D TiO2 nanosheets (TNSs) and 3D TiO2 nanoflowers (TNFs) have been synthesized via a simple NaOH-assisted hydrothermal method and employed as an photoanode for high-efficiency dye-sensitized solar cells (DSSCs). In our strategy, The TNFs layer with large thickness can potentially enable a great amount of dye adsorption and significantly strengthen the light-harvesting ability, which is beneficial for generating more charge. In addition, The TNRA and TNSs act like charge collectors, providing efficient transport pathways for electrons, which means the photogenerated charge can be collected efficiently through this conducting network. The electrochemical impedance spectroscopy (EIS) measurement shows that the TNRSF film possesses better electron transport ability and longer electron lifetime (28.4 ms) compared with the TiO2 nanoparticals (TNPs) film. Furthermore, an overall power conversion efficiency of 8.41% (with a J(sc) of 16.95 mA cm(-2), V-oc of 0.73 V and FF of 68%) is achieved for the DSSC based on the TNRSF photoanode, indicating a 51.8% enhancement compared with that of the TNPs photoanode (5.54%). The discoveries from this work highlight the significance of designing photoanode materials with hierarchical structures for enhanced photovoltaic performance. (C) 2015 Elsevier Ltd. All rights reserved.
收录类别	SCI ; EI
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/55525
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Zhao, P. L.,S. T. Yao,M. Wang,et al. High-efficiency dye-sensitized solar cells with hierarchical structures titanium dioxide to transfer photogenerated charge[J]. Electrochimica Acta,2015,170:276-283.
APA	Zhao, P. L..,S. T. Yao.,M. Wang.,B. Wang.,P. Sun.,...&Y. F. Sun and G. Y. Lu.(2015).High-efficiency dye-sensitized solar cells with hierarchical structures titanium dioxide to transfer photogenerated charge.Electrochimica Acta,170,276-283.
MLA	Zhao, P. L.,et al."High-efficiency dye-sensitized solar cells with hierarchical structures titanium dioxide to transfer photogenerated charge".Electrochimica Acta 170(2015):276-283.

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