A new terpyridine cobalt complex redox shuttle for dye-sensitized solar cells

Salvatori, Paolo and Marotta, Gabriele and Cinti, Antonio and Mosconi, Edoardo and Panigrahi, Mallika and Giribabu, Lingamallu and Nazeeruddind, Mohammad K and De Angelis, Filippo (2013) A new terpyridine cobalt complex redox shuttle for dye-sensitized solar cells. Inorganica Chimica Acta, 406. pp. 106-112. ISSN 0020-1693

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A new cobalt-terpyridine redox shuttle ([Co(Cl-phenyl-terpyridine)2]2+/3+) has been synthesized, characterized, computationally investigated and then tested in photovoltaic devices, in conjunction with the prototypical N719 and Z907 ruthenium dyes. Lower efficiencies compared to the reference [Co(bpy)3]2+/3+ redox couple were obtained, probably due to increased recombination processes. Improvements in the devices performances were obtained by using chenodeoxycholic acid as surface co-adsorbent and as an electrolyte additive. Moreover, to better rationalize the photovoltaic results, the effect of two different counterions (TFSI and PF6) has been investigated for the reference [Co(bpy)3]2+/3+ electrolyte, finding a reduced efficiency for the TFSI-based electrolyte.

Item Type: Article
Uncontrolled Keywords: Dye-sensitized solar cells (DSCs); Electrolyte; Cobalt complex; Terpyridine; Chenodeoxycholic acid
Subjects: 500 Scienze naturali e Matematica > 540 Chimica e scienze connesse
Depositing User: Francesca Cavazzini
Date Deposited: 12 Dec 2013 15:59
Last Modified: 12 Dec 2013 15:59
URI: http://eprints.bice.rm.cnr.it/id/eprint/8014

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