title: Synthesis and photovoltaic applications of a 4,4'-spirobi[cyclopenta[2,1-b;3,4-b']dithiophene]-bridged donor/acceptor dye.
abstract: A new donor/acceptor (D-A) spiro dye (SCPDT1) featuring two bithiophene units, connected through an sp(3)-hybridized carbon atom, was prepared by a multistep synthetic sequence involving the convenient assembly of the spiro system under mild catalytic conditions. The photocurrent spectrum of dye-sensitized solar cells incorporating SCPDT1 covers the spectral region ranging from 350 to 700 nm and reaches a wide maximum of ~80% in the 420-560 nm range. Power conversion efficiencies of up to 6.02% were obtained.
authors.affiliation: Istituto di Scienze e Tecnologie Molecolari del Consiglio Nazionale delle Ricerche, ISTM-CNR , via Golgi 19, 20133 Milano, Italy, and Departamento de Química, Universidad Nacional de Río Cuarto , Agencia Postal No 3, X5804BYA, Río Cuarto, Argentina.
authors.forename: Gianluca
authors.initials: G
authors.lastname: Pozzi
authors.forename: Simonetta
authors.initials: S
authors.lastname: Orlandi
authors.forename: Marco
authors.initials: M
authors.lastname: Cavazzini
authors.forename: Daniela
authors.initials: D
authors.lastname: Minudri
authors.forename: Lorena
authors.initials: L
authors.lastname: Macor
authors.forename: Luis
authors.initials: L
authors.lastname: Otero
authors.forename: Fernando
authors.initials: F
authors.lastname: Fungo