Lee, Chuan-Pei and Peng, Jia-De and Velayutham, D. and Chang, Jeffrey and Chen, Ping-Wei and Suryanarayanan, V. and Ho, Kuo-Chuan (2013) Trialkylsulfonium and tetraalkylammonium cations-based ionicliquid electrolytes for quasi-solid-state dye-sensitized solar cells. Electrochimica Acta, 114. pp. 303-308. ISSN 0013-4686

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Abstract

Seven ionic liquids (ILs) based on asymmetric trialkyl sulfonium and tetraalkylammonium cations withbis(trifluoromethanesulfonyl)imide anion were prepared and characterized. Physico-chemical and elec-trochemical properties of these ionic liquids including density, decomposition temperature, viscosity andconductivity were determined. The photovoltaic parameters of dye-sensitized solar cells (DSSCs) con-taining these sulfonium and ammonium ion-based ILs were compared. Among these two groups of ILs,the DSSCs with sulfonium cation-based ILs show higher cell efficiencies than that of ammonium coun-terpart due to lower charge transfer resistance exhibited by the former when compared to the latter,as confirmed by electrochemical impedance spectroscopy (EIS). The best cell efficiency achieved in thiswork was 4.61%. Moreover, long-term durability of the quasi-solid-state DSSCs at 50◦C was investigated.

Item Type:	Article
Uncontrolled Keywords:	Dye-sensitized solar cells, Electrochemical impedance spectroscopy, Ionic liquid, Long-term durabilitya
Subjects:	Electrodics and Electrocatalysis Electroorganic
Divisions:	UNSPECIFIED
Depositing User:	Dr. N Meyyappan
Date Deposited:	31 Dec 2013 07:29
Last Modified:	31 Dec 2013 07:29
URI:	http://cecri.csircentral.net/id/eprint/3059

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