New tunable ruthenium complex dyes for TiO2 solar cells

Author(s)

Guimaraes, Robson R. ^[1] ; Parussulo, Andre L. A. ^[1] ; Toma, Henrique E. ^[1] ; Araki, Koiti ^[1]

Affiliation

^[1] Univ Sao Paulo, Inst Chem, BR-05508000 Sao Paulo - Brazil

• Document type: Journal article
• Source: Inorganica Chimica Acta; v. 404, p. 23-28, AUG 1 2013.
• Web of Science Citations: 21

Abstract

The light-to-electricity conversion efficiencies of the new (Bu4N)(3){[}Ru(dcbpy)(2)(tmtH(2))], (Bu4N)(4){[}Ru(dcbpy)(2)(tmtH)] and (Bu4N)(5){[}Ru(dcbpy)(2)(tmt)] complexes, where dcbpy = 2,2'-bipyridyl-4,4'-dicarboxylate and tmt = 2,4,6-trimercapto-1,3,5-triazine, were comparable with those obtained with the N719 dye. Furthermore, the contribution of two MLCT and a LMCT charge-transfer band to the energy conversion process was revealed by deconvolution of the photoaction spectra, indicating that they are the first ruthenium dyes presenting long distance photo-injection from a ligand-to-metal charge-transfer excited state. (C) 2013 Elsevier B. V. All rights reserved. (AU)

• FAPESP's process: 09/08584-6 - Supramolecular chemistry and nanotechnology
• Grantee: Henrique Eisi Toma
• Support Opportunities: Research Projects - Thematic Grants
• FAPESP's process: 08/01495-5 - Development of the supramolecular systems for photoelectrochemical devices
• Grantee: André Luis Araújo Parussulo
• Support Opportunities: Scholarships in Brazil - Doctorate (Direct)