Heteroleptic ruthenium antenna-dye for high-voltage dye-sensitized solar cells

Please use this identifier to cite or link to this item: http://ir.lib.ncu.edu.tw/handle/987654321/50722

Title:	Heteroleptic ruthenium antenna-dye for high-voltage dye-sensitized solar cells
Authors:	Li,JY;Chen,CY;Chen,JG;Tan,CJ;Lee,KM;Wu,SJ;Tung,YL;Tsai,HH;Ho,KC;Wu,CG
Contributors:	化學學系
Date:	2010
Issue Date:	2012-03-27 18:08:44 (UTC+8)
Publisher:	國立中央大學
Abstract:	A new ruthenium photosensitizer, coded CYC-B7, incorporating a bithienyl-carbazole antenna ligand was designed and prepared for improving the open-circuit voltage (V(oc)) of a dye-sensitized solar cell (DSC) device. This new sensitizer displays the low energy MLCT transition band centered at 551 nm with a high molar absorption coefficient of 2.19 x 10(4) M(-1) cm(-1). In addition, a simple approach to reduce the aggregation of bulky ruthenium dyes assembled onto the surface of TiO(2) film is demonstrated. The cell based on this new heteroleptic ruthenium dye provides a high V(oc) of 788 mV and an overall conversion efficiency (eta) of 8.96%. The functionality of carbazole in CYC-B7 resulting in the increases of the V(oc) value of the corresponding device is verified by comparing with the performance of the DSC sensitized with a structurally similar dye without carbazole.
Relation:	JOURNAL OF MATERIALS CHEMISTRY
Appears in Collections:	[Department of Chemistry] journal & Dissertation

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