Photophysical properties of new cyclometalated ruthenium complexes and their use in dye sensitized solar cells
作者:Hawraa Kisserwan、Amanda Kamar、Tharallah Shoker、Tarek H. Ghaddar
DOI:10.1039/c2dt30482a
日期:——
A new class of cyclometalated ruthenium complexes, Ru(C^N^N′)(N^N′^N′′)·Cl where N^N′^N′′ = 4,4′,4′′-tricarboxy-2,2′:6′,2′′-terpyridine and C^N^N′ = substituted 6-phenyl-2,2′-bipyridine, for Dye Sensitized Solar Cells (DSSCs) is proposed. We have investigated the effect of different substituents (R = COOH, thiophen-2-yl, F and OCH3) on the ancillary C^N^N′ ligand on the photophysical properties and performance of the six different cyclometalated ruthenium complexes in DSSCs. Using an ionic liquid based electrolyte, efficiencies up to η = 3.06% have been attained under 1 sun irradiation. Moreover, the T66 based DSSC exhibited a good stability under 1000 W m2 light soaking at 60 °C for 24 days, retaining 92.8% of its initial efficiency.
提出了一类新的环金属化铑配合物,Ru(C^N^N′)(N^N′^N′′)·Cl,其中N^N′^N′′ = 4,4′,4′′-三羧基-2,2′:6′,2′′-吡啶及C^N^N′ = 取代的6-苯基-2,2′-联吡啶,应用于染料敏化太阳能电池(DSSCs)。我们研究了不同取代基(R = COOH、噻吩-2-基、F和OCH3)对辅助C^N^N′配体在DSSCs中六种不同环金属化铑配合物的光物理性质和性能的影响。使用基于离子液体的电解液,在1太阳照射下效率最高可达η = 3.06%。此外,基于T66的DSSC在60°C下以1000 W m²的光照浸泡24天,表现出良好的稳定性,保持了92.8%的初始效率。