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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

A high efficiency ruthenium(II) tris-heteroleptic dye containing 4,7-dicarbazole-1,10-phenanthroline for nanocrystalline solar cells

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Author(s):
Mueller, Andressa V. [1] ; Ramos, Luiz D. [1] ; Frin, Karina P. M. [1] ; de Oliveira, Kleber T. [2] ; Polo, Andre S. [1]
Total Authors: 5
Affiliation:
[1] Univ Fed ABC UFABC, Ctr Ciencias Nat & Humanas, Ave Estados 5001, BR-09210580 Santo Andre, SP - Brazil
[2] Univ Fed Sao Carlos UFSCAR, Dept Quim, Rodovia Washington Luis, Km 235, BR-13565905 Sao Carlos, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: RSC ADVANCES; v. 6, n. 52, p. 46487-46494, 2016.
Web of Science Citations: 9
Abstract

The tris-heteroleptic polypyridyl ruthenium(II) dye, cis-{[}Ru(cbz(2)-phen)(dcbH(2))(NCS)(2)], cbz(2)-phen = 4,7-dicarbazole-1,10-phenanthroline and dcbH(2) = 4,4'-dicarboxylic acid 2,2'-bipyridine, was designed, synthesized, purified via liquid chromatography and characterized using H-1 NMR, FTIR, cyclic voltammetry, absorption and emission spectroscopy. The compound exhibits broad and intense MLCT bands that overlap the visible spectrum and it is capable of sensitizing TiO2 films. The energy levels of cis-{[}Ru(cbz(2)-phen)(dcbH(2))(NCS)(2)] are adequate for its use in DSSCs. The solar cells prepared using this dye achieved a performance that surpasses N3 dye under the same conditions. The introduction of the extended pi-conjugated carbazole substituent at the 4 and 7 positions of 1,10-phenanthroline increases the IPCE and the overall solar cell efficiency. The high performance is ascribed to the HOMO stabilization and to the increase in electron delocalization of the triplet excited state, which favors the electron injection via singlet and triplet pathways. (AU)

FAPESP's process: 15/21110-4 - Exploiting photocatalyzed reactions under continuous flow conditions by using porphyrinoid systems: (C-FlowPhotoChem)
Grantee:Kleber Thiago de Oliveira
Support type: Regular Research Grants
FAPESP's process: 15/13149-8 - Polypyridynic rhenium(I) complexes: syntheses, investigation of photophysical properties and application as luminescent probes and/or therapeutic agents
Grantee:Karina Passalacqua Morelli Frin
Support type: Regular Research Grants
FAPESP's process: 15/00605-5 - Investigation of the formation kinetics of tris-heteroleptic Ru(II) compounds with potential application in energy conversion
Grantee:Andressa Vidal Muller
Support type: Scholarships in Brazil - Master
FAPESP's process: 13/25173-5 - Photoreactivity and kinetic formation of ruthenium (II) tris-heteroleptic compounds
Grantee:André Sarto Polo
Support type: Regular Research Grants