Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
5271717 | Tetrahedron Letters | 2013 | 5 Pages |
New β-pyrrolic functionalized porphyrins with donor-Ï-acceptor character were synthesized and characterized as dye sensitizers for dye-sensitized solar cells. Two types of Ï-conjugated spacers, namely benzene and thiophene rings, with cyanoacrylic acid as an acceptor were linked to the porphyrin ring at the β-pyrrolic position. These porphyrins showed high thermal and electrochemical stability. As sensitizers, the porphyrin dye bearing a thiophene ring as the Ï-conjugated spacer gave better cell performance with a short-circuit photocurrent density (Jsc) of 4.57 mA cmâ2, an open-circuit voltage (Voc) of 0.59 V, and a fill factor (ff) of 0.59, corresponding to an overall conversion efficiency (η) of 1.94%.
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