Highly efficient dye-sensitized solar cells based on panchromatic ruthenium sensitizers with quinolinylbipyridine anchors.
Angew Chem Int Ed Engl
; 53(1): 178-83, 2014 Jan 03.
Article
em En
| MEDLINE
| ID: mdl-24218110
ABSTRACT
Panchromatic Ru(II) sensitizers TF-30-TF-33 bearing a new class of 6-quinolin-8-yl-2,2'-bipyridine anchor were synthesized and tested under AM1.5â
G simulated solar irradiation. Their increased πâ
conjugation relative to that of the traditional 2,2'6',2''-terpyridine-based anchor led to a remarkable improvement in absorptivity across the whole UV-Vis-NIR spectral regime. Furthermore, the introduction of a bulky tert-butyl substituent on the quinolinyl fragment not only led to an increase in the JSC â
value owing to the suppression of dye aggregation, but remarkably also resulted in no loss in VOC in comparison with the reference sensitizer containing a tricarboxyterpyridine anchor. The champion sensitizer in DSC devices was found to be TF-32 with a performance of JSC =19.2â
mA cm(-2) , VOC =740â
mV, FF=0.72, and η=10.19 %. This 6-quinolin-8-yl-2,2'-bipyridine anchor thus serves as a prototype for the next generation of Ru(II) sensitizers with any tridentate ancillary.
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MEDLINE
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En
Revista:
Angew Chem Int Ed Engl
Ano de publicação:
2014
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Article