Incorporation of Graphenes in Nanostructured TiO(2) Films via Molecular Grafting for Dye-Sensitized Solar Cell Application

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	Incorporation of Graphenes in Nanostructured TiO(2) Films via Molecular Grafting for Dye-Sensitized Solar Cell Application
	Y. B. Tang; C. S. Lee; J. Xu; Z. T. Liu; Z. H. Chen; Z. B. He; Y. L. Cao; G. D. Yuan; H. S. Song; L. M. Chen; L. B. Luo; H. M. Cheng; W. J. Zhang; I. Bello; S. T. Lee
	2010
发表期刊	Acs Nano
ISSN	1936-0851
卷号	4 期号:6 页码:3482-3488
摘要	This paper presents a systematic investigation on the incorporation of chemical exfoliation graphene sheets (GS) in TiO(2) nanoparticle films via a molecular grafting method for dye-sensitized solar cells (DSSCs). By controlling the oxidation time in the chemical exfoliation process, both high conductivity of reduced GS and good attachment of TiO(2) nanoparticles on the GS were achieved. Uniform GS/TiO(2) composite films with large areas on conductive glass were prepared by electrophoretic deposition, and the incorporation of 65 significantly improved the conductivity of the TiO(2) nanoparticle film by more than 2 orders of magnitude. Moreover, the power conversion efficiency for DSSC based on GS/TiO(2) composite films is more than 5 times higher than that based on TiO(2) alone, indicating that the incorporation of GS is an efficient means for enhancing the photovoltaic (PV) performance. The better PV performance of GS/TiO(2) DSSC is also attributed to the better dye loading of GS/TiO(2) film than that of TiO(2) film. The effect of GS content on the PV performances was also investigated. It was found that the power conversion efficiency increased first and then decreased with the increasing of GS concentration due to the decrease in the transmittance at high GS content. Further improvements can be expected by fully optimizing fabrication conditions and device configuration, such as increasing dye loading via thicker films. The present synthetic strategy is expected to lead to a family of composites with designed properties.
部门归属	[tang, yong-bing; lee, chun-sing; xu, jun; liu, zeng-tao; chen, zhen-hua; he, zhubing; cao, yu-lin; yuan, guodong; song, haisheng; chen, limiao; luo, linbao; zhang, wen-jun; bello, igor; lee, shuit-tong] city univ hong kong, cosdaf, hong kong, hong kong, peoples r china. [tang, yong-bing; lee, chun-sing; xu, jun; liu, zeng-tao; chen, zhen-hua; he, zhubing; cao, yu-lin; yuan, guodong; song, haisheng; chen, limiao; luo, linbao; zhang, wen-jun; bello, igor; lee, shuit-tong] city univ hong kong, dept phys & mat sci, hong kong, hong kong, peoples r china. [tang, yong-bing; lee, shuit-tong] soochow univ, inst funct nano & soft mat funsom, suzhou 215123, jiangsu, peoples r china. [tang, yong-bing; lee, shuit-tong] soochow univ, jiangsu key lab carbon based funct mat & devices, suzhou 215123, jiangsu, peoples r china. [tang, yong-bing; cheng, hui-ming] chinese acad sci, shenyang natl lab mat sci synl, inst met res, shenyang 110016, peoples r china.;lee, cs (reprint author), city univ hong kong, cosdaf, hong kong, hong kong, peoples r china;apcslee@cityu.edu.hk apannale@cityu.edu.hk
关键词	Graphenes Titanium Dioxide Molecular-level Incorporation Composite Films Dye-sensitized Solar Cells Oxide Transparent Nanosheets Reduction Gas
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/31474
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Y. B. Tang,C. S. Lee,J. Xu,et al. Incorporation of Graphenes in Nanostructured TiO(2) Films via Molecular Grafting for Dye-Sensitized Solar Cell Application[J]. Acs Nano,2010,4(6):3482-3488.
APA	Y. B. Tang.,C. S. Lee.,J. Xu.,Z. T. Liu.,Z. H. Chen.,...&S. T. Lee.(2010).Incorporation of Graphenes in Nanostructured TiO(2) Films via Molecular Grafting for Dye-Sensitized Solar Cell Application.Acs Nano,4(6),3482-3488.
MLA	Y. B. Tang,et al."Incorporation of Graphenes in Nanostructured TiO(2) Films via Molecular Grafting for Dye-Sensitized Solar Cell Application".Acs Nano 4.6(2010):3482-3488.