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Synthesis and characterization of novel cyclometalated iridium(III) complexes for nanocrystalline TiO2-based dye-sensitized solar cells

Paper ID Volume ID Publish Year Pages File Format Full-Text
27382 44018 2011 7 PDF Available
Title
Synthesis and characterization of novel cyclometalated iridium(III) complexes for nanocrystalline TiO2-based dye-sensitized solar cells
Abstract

Four novel cyclometalated iridium(III) complexes with the following general formulas were synthesized and characterized using 1H NMR, {1H–1H} COSY, ESI-MS spectral and elemental analysis data: [Ir(C∧N∧C)(ptpy-COOH)]+ (C∧N∧C = 2,6-diphenylpyridinato (1); 2,4,6-triphenylpyridinato (2), ptpy-COOH = 4′-(4-carboxyphenyl)-2,2′:6′,2“-terpyridine) and [Ir(C∧N∧C)(tpy-COOH)]+ (C∧N∧C = 2,6-diphenylpyridinato (3); 2,6-ditolylpyridinato (4), tpy-COOH = 4′-carboxy-2,2′:6′,2″-terpyridine). The photophysical and redox properties and photovoltaic performance of the Ir(III) complexes as photosensitizers in nanocrystalline TiO2-based solar cells were studied and compared to those of cis-diisothiocyanatobis(4,4′-dicarboxy-2,2′-bipyridine)ruthenium(II) (N3). Dye 4 exhibits the highest photovoltaic performance with an overall solar energy conversion efficiency of 2.16%.

► Four novel cyclometalated Ir(III) complexes were synthesized. ► Four novel cyclometalated Ir(III) complexes have longer excited-state lifetimes. ► These Ir(III) complexes may be applicable to the sensitizers for DSSCs.

Keywords
Cyclometalated iridium(III) complex; Terpyridine derivative; Ligand-to-ligand charge trasfer; Dye-sensitized solar cell
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Synthesis and characterization of novel cyclometalated iridium(III) complexes for nanocrystalline TiO2-based dye-sensitized solar cells
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Publisher
Database: Elsevier - ScienceDirect
Journal: Journal of Photochemistry and Photobiology A: Chemistry - Volume 222, Issue 1, 5 July 2011, Pages 203–209
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Bioengineering
Get Full-Text Now
Don't Miss Today's Special Offer
Price was $35.95
You save - $31
Price after discount Only $4.95
100% Money Back Guarantee
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