The role of para-alkyl substituents on meso-phenyl porphyrin sensitised TiO2 solar cells:: control of the eTiO2/electrolyte+ recombination reaction
The role of para-alkyl substituents on meso-phenyl porphyrin sensitised TiO2 solar cells:: control of the eTiO2/electrolyte+ recombination reaction
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DOI：
10.1039/b717081e
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发表时间：
2008-01-01
影响因子：
--
通讯作者：
Palomares, Emilio
中科院分区：
文献类型：
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作者：
Forneli, Amparo;Planells, Miquel;Palomares, Emilio
我们的目的是研究添加疏水性的烷基链取代基的不对称的游离碱四苯基卟啉用于制备染料敏化太阳能电池（DSSC）的效果。我们使用了两种不同的不对称的meso-四苯基取代的游离碱卟啉，目的有两个：（1）观察疏水烷基链取代meso-苯基基团的三帕拉如何影响半导体纳米颗粒上分子聚集体的形成;（B）推断取代对操作装置中的e（TiO 2）/电解质+复合反应的影响。为了实现这些目标，我们集中在研究的电子转移过程中发生在不同的接口的光伏器件使用电化学，稳态和时间分辨光谱技术。
We aim to investigate the effect of adding hydrophobic alkyl chains substituents to unsymmetrical free base tetra-phenyl porphyrins used for the preparation of dye sensitised solar cells (DSSC). We have used two different unsymmetrical meso-tetraphenyl substituted free base porphyrins attending to two objectives: (1) to observe how the substitution of three para positions of the meso-phenyl groups with hydrophobic alkyl chains influences the formation of molecular aggregates onto the semiconductor nanoparticles and (b) to deduce the influence that the substitution exerts over the e(TiO2)/electrolyte+ recombination reaction in operating devices. To achieve these goals we have focussed on the study of the electron transfer processes that take place at the different interfaces of the photovoltaic device using electrochemistry, steady-state and time resolved spectroscopic techniques.