Dye-sensitized solar cells with solvent-free ionic liquid electrolytes

doi:10.1021/jp805027v

CORC > 化学研究所 > 中国科学院化学研究所

	Dye-sensitized solar cells with solvent-free ionic liquid electrolytes
	Cao, Yiming 1; Zhang, Jing 1; Bai, Yu 1; Li, Renzhi 1; Zakeeruddin, Shaik M.2; Graetzel, Michael 2; Wang, Peng 1
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2008-09-04
卷号	112 期号:35 页码:13775-13781
ISSN号	1932-7447
DOI	10.1021/jp805027v
英文摘要	We systematically studied the temperature-dependent physicochemical properties, such as density, conductivity, and fluidity, of 1,3-dialkylimidazolium iodides. In combination with the amphiphilic Z907Na sensitizer, we have found that it is important to use low-viscosity iodide melts with small cations to achieve high-efficiency dye-sensitized solar cells. By employing high-fluidity eutectic-based melts the device efficiencies considerably increased compared to those for cells with the corresponding state of the art ionic liquid electrolytes. We propose a modified Stokes-Einstein equation by correlating ion mobility and fluidity to quantitatively depict the triiodide transport in ionic liquid electrolytes. These studies reveal that the viscosity-dependent transport of triiodide in ionic liquid electrolytes with high iodide concentration can be explained by two parallel processes. Apart from the normal physical diffusion, the coupling process of physical diffusion and bond exchange is responsible for the observed abnormally high diffusion coefficients. This work has provided useful insight for further improvement of solvent-free electrolytes based on rational design of their constituents, facilitating the large-scale practical application of lightweight, flexible dye-sensitized solar cells.
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000258800700070
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/64189]
专题	中国科学院化学研究所
通讯作者	Wang, Peng
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Swiss Fed Inst Technol, Lab Photon & Interfaces, CH-1015 Lausanne, Switzerland
推荐引用方式 GB/T 7714	Cao, Yiming,Zhang, Jing,Bai, Yu,et al. Dye-sensitized solar cells with solvent-free ionic liquid electrolytes[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2008,112(35):13775-13781.
APA	Cao, Yiming.,Zhang, Jing.,Bai, Yu.,Li, Renzhi.,Zakeeruddin, Shaik M..,...&Wang, Peng.(2008).Dye-sensitized solar cells with solvent-free ionic liquid electrolytes.JOURNAL OF PHYSICAL CHEMISTRY C,112(35),13775-13781.
MLA	Cao, Yiming,et al."Dye-sensitized solar cells with solvent-free ionic liquid electrolytes".JOURNAL OF PHYSICAL CHEMISTRY C 112.35(2008):13775-13781.