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首页> 外文期刊>RSC Advances >Synthesis of novel isophorone-based dyes for dye-sensitized solar cells
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Synthesis of novel isophorone-based dyes for dye-sensitized solar cells

机译：用于染料敏化太阳能电池的新型异佛尔酮基染料的合成

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Four organic dyes containing isophorone as the pi-bridge unit were synthesised and their photophysical and electrochemical properties were characterised. They were then used to fabricate dye-sensitised solar cells. Arylamine derivatives and cyanoacrylic acid functioned as electron donors (D) and electron acceptors (A), respectively, to form a D-pi-A system without the need for a Pd catalyst. YC-1, with a long chain hexyloxy group and a strong phenothiazine donor moiety, improved both the open-circuit voltage (V-oc) and short-circuit current (J(sc)) and reduced charge recombination. The optimum device had a J(sc) of 14.86 mA cm(-2), a V-oc of 0.67 V, a fill factor of 0.62 and a photon-to-current conversion efficiency of 60% at 385-605 nm, corresponding to an overall conversion efficiency of 6.18%. The photophysical properties of the dye-sensitised solar cells were analysed using a time-dependent density functional theory model with the B3LYP functional. The electronic nature of the devices was elucidated using electrochemical impedance spectroscopy and controlled intensity modulated photo spectroscopy.
机译：合成了四种含有异佛尔酮作为pi桥单元的有机染料，并对其光物理和电化学性质进行了表征。然后将它们用于制造染料敏化太阳能电池。芳胺衍生物和氰基丙烯酸分别用作电子供体（D）和电子受体（A），以形成D-pi-A体系，而无需Pd催化剂。具有长链己氧基和强吩噻嗪供体部分的YC-1改善了开路电压（V-oc）和短路电流（J（sc）），并减少了电荷重组。最佳器件的J（sc）为14.86 mA cm（-2），V-oc为0.67 V，填充系数为0.62，在385-605 nm处的光子电流转换效率为60％总转换效率为6.18％。使用具有B3LYP功能的时变密度泛函理论模型分析了染料敏化太阳能电池的光物理性质。使用电化学阻抗光谱法和受控强度调制光谱法阐明了装置的电子性质。

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