Incorporation of Graphenes in Nanostructured TiO2 Films via Molecular Grafting for Dye-Sensitized Solar Cell Application

doi:10.1021/nn100449w

IMR OpenIR

	Incorporation of Graphenes in Nanostructured TiO2 Films via Molecular Grafting for Dye-Sensitized Solar Cell Application
	Tang, Yong-Bing 1,2,3,4,5; Lee, Chun-Sing 1,2; Xu, Jun 1,2; Liu, Zeng-Tao 1,2; Chen, Zhen-Hua 1,2; He, Zhubing 1,2; Cao, Yu-Lin 1,2; Yuan, Guodong 1,2; Song, Haisheng 1,2; Chen, Limiao 1,2; Luo, Linbao 1,2; Cheng, Hui-Ming 5; Zhang, Wen-Jun 1,2; Bello, Igor 1,2; Lee, Shuit-Tong 1,2,3,4
通讯作者	Lee, Chun-Sing(apcslee@cityu.edu.hk)
	2010-06-01
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 TiO2 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 TiO2 nanoparticles on the GS were achieved. Uniform GS/TiO2 composite films with large areas on conductive glass were prepared by electrophoretic deposition, and the incorporation of 65 significantly improved the conductivity of the TiO2 nanoparticle film by more than 2 orders of magnitude. Moreover, the power conversion efficiency for DSSC based on GS/TiO2 composite films is more than 5 times higher than that based on TiO2 alone, indicating that the incorporation of GS is an efficient means for enhancing the photovoltaic (PV) performance. The better PV performance of GS/TiO2 DSSC is also attributed to the better dye loading of GS/TiO2 film than that of TiO2 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.
关键词	graphenes titanium dioxide molecular-level incorporation composite films dye-sensitized solar cells
资助者	Research Grants Council of Hong Kong ; Hong Kong SAR, China ; Major State Research Development Program of China ; IMR
DOI	10.1021/nn100449w
收录类别	SCI
语种	英语
资助项目	Research Grants Council of Hong Kong[CityU101809] ; Hong Kong SAR, China[N_CityU108/08] ; Major State Research Development Program of China[2006C8933000] ; Major State Research Development Program of China[2007CB936000] ; IMR
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Multidisciplinary ; Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000278888600066
出版者	AMER CHEMICAL SOC
引用统计	被引频次：458[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/101202
专题	中国科学院金属研究所
通讯作者	Lee, Chun-Sing
作者单位	1.City Univ Hong Kong, COSDAF, Hong Kong, Hong Kong, Peoples R China 2.City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China 3.Soochow Univ, Inst Funct Nano & Soft Mat FUNSOM, Suzhou 215123, Jiangsu, Peoples R China 4.Soochow Univ, Jiangsu Key Lab Carbon Based Funct Mat & Devices, Suzhou 215123, Jiangsu, Peoples R China 5.Chinese Acad Sci, Shenyang Natl Lab Mat Sci SYNL, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Tang, Yong-Bing,Lee, Chun-Sing,Xu, Jun,et al. Incorporation of Graphenes in Nanostructured TiO2 Films via Molecular Grafting for Dye-Sensitized Solar Cell Application[J]. ACS NANO,2010,4(6):3482-3488.
APA	Tang, Yong-Bing.,Lee, Chun-Sing.,Xu, Jun.,Liu, Zeng-Tao.,Chen, Zhen-Hua.,...&Lee, Shuit-Tong.(2010).Incorporation of Graphenes in Nanostructured TiO2 Films via Molecular Grafting for Dye-Sensitized Solar Cell Application.ACS NANO,4(6),3482-3488.
MLA	Tang, Yong-Bing,et al."Incorporation of Graphenes in Nanostructured TiO2 Films via Molecular Grafting for Dye-Sensitized Solar Cell Application".ACS NANO 4.6(2010):3482-3488.