A new ruthenium sensitizer based on a heteroaromatic-4,4'-π-conjugated 2,2'-bipyridine, bearing conjugated π-excessive heteroaromatic rings as donors is presented. Dye-sensitized solar cells have been fabricated based on the novel ruthenium complex [Ru(II)LL'(NCS)2] (L = 4,4'-bis[(E)-2-(3,4-ethylenedioxythien-2-yl)vinyl]-2,2'-bipyridine, L' = 4,4'-(dicarboxylic acid)-2,2'-bipyridine) and their photoelectrochemical properties have been measured under various conditions. Using this sensitizer photovoltaic efficiencies up to 9.1 % under standard global AM 1.5 sunlight were obtained. DFT/TDDFT calculations have been performed for the sensitizer in solution. By calculating the excited states energy and character and comparing the results with the conduction band edge of a model TiO2 nanoparticle, we were able to highlight the factors affecting the measured photovoltaic efficiencies

Abbotto, A., Barolo, C., Yum, J., Bellotto, L., De Angelis, F., Grätzel, M., et al. (2008). Ruthenium sensitizers based on heteroaromatic conjugated bipyridines for dye-sensitized solar cells. In Conference on Organic Optoelectronics and Photonics III (pp.69990O-1-69990O-9). SPIE [10.1117/12.783299].

Ruthenium sensitizers based on heteroaromatic conjugated bipyridines for dye-sensitized solar cells

ABBOTTO, ALESSANDRO
;
2008

Abstract

A new ruthenium sensitizer based on a heteroaromatic-4,4'-π-conjugated 2,2'-bipyridine, bearing conjugated π-excessive heteroaromatic rings as donors is presented. Dye-sensitized solar cells have been fabricated based on the novel ruthenium complex [Ru(II)LL'(NCS)2] (L = 4,4'-bis[(E)-2-(3,4-ethylenedioxythien-2-yl)vinyl]-2,2'-bipyridine, L' = 4,4'-(dicarboxylic acid)-2,2'-bipyridine) and their photoelectrochemical properties have been measured under various conditions. Using this sensitizer photovoltaic efficiencies up to 9.1 % under standard global AM 1.5 sunlight were obtained. DFT/TDDFT calculations have been performed for the sensitizer in solution. By calculating the excited states energy and character and comparing the results with the conduction band edge of a model TiO2 nanoparticle, we were able to highlight the factors affecting the measured photovoltaic efficiencies
paper
Bipyridines; Donor ligands; Heteroaromatics; Heteroleptic complexes; Ruthenium; Sensitizer; Solar cells; TDDFT calculations; Cells; Direct energy conversion; Photoelectrochemical cells; Photonics; Photovoltaic cells; Ruthenium; Ruthenium compounds; Solar energy; Solar equipment; bipyridine; Bipyridines; Dye-sensitized solar cells (DSSC); Organic optoelectronics; Ruthenium (IV) complexes; Ruthenium(II) sensitizers; Solar cells
English
Conference on Organic Optoelectronics and Photonics III APR 07-10
2008
Conference on Organic Optoelectronics and Photonics III
978-0-8194-7197-0
2008
6999
69990O-1
69990O-9
69990O
none
Abbotto, A., Barolo, C., Yum, J., Bellotto, L., De Angelis, F., Grätzel, M., et al. (2008). Ruthenium sensitizers based on heteroaromatic conjugated bipyridines for dye-sensitized solar cells. In Conference on Organic Optoelectronics and Photonics III (pp.69990O-1-69990O-9). SPIE [10.1117/12.783299].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/230
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