Regioregular polyalkylthiophenes are a very important class of conjugated polymers characterized by interesting features for pratical applications, like organic photovoltaic cells and others electronic devices. The bulk heterojunction formed by regioregular poli(3hexylthiophene) (P3HT) and the PCBM fullerene derivative is here fully characterized as active layer for the fabrication of photovoltaic devices. We also present the synthesis of a new thiophenic polymer, the regioregular poly[3-(6-methoxyhexyl)thiophene] (P3HOMe) which demonstrates being very suitable to be used as the organic electron donor component. The simple introduction of a methoxy group at the end of an hexamethylenic side chain, strongly enhances the solubility, workability and filmability of the final polymer, making it a promising alternative to P3HT, which often gives problems related to its solubility and processability. From the electrical point of view, P3HOMe possesses an high conductivity comparable with P3HT and also shows an enhanced stability towards oxygen oxidative doping and a very low dependence of the conductivity on temperature changes. For these reasons, P3HOMe is a very promising intrinsically conducting polymer exhibiting strategic features in processing and utilization conditions, thus leading to important developments towards the obtainment of electronic organic materials such as photovoltaic cells.
New thiophenic polymer for organic photovoltaic device
SETTI, LEONARDO;LANZI, MASSIMILIANO;
2009
Abstract
Regioregular polyalkylthiophenes are a very important class of conjugated polymers characterized by interesting features for pratical applications, like organic photovoltaic cells and others electronic devices. The bulk heterojunction formed by regioregular poli(3hexylthiophene) (P3HT) and the PCBM fullerene derivative is here fully characterized as active layer for the fabrication of photovoltaic devices. We also present the synthesis of a new thiophenic polymer, the regioregular poly[3-(6-methoxyhexyl)thiophene] (P3HOMe) which demonstrates being very suitable to be used as the organic electron donor component. The simple introduction of a methoxy group at the end of an hexamethylenic side chain, strongly enhances the solubility, workability and filmability of the final polymer, making it a promising alternative to P3HT, which often gives problems related to its solubility and processability. From the electrical point of view, P3HOMe possesses an high conductivity comparable with P3HT and also shows an enhanced stability towards oxygen oxidative doping and a very low dependence of the conductivity on temperature changes. For these reasons, P3HOMe is a very promising intrinsically conducting polymer exhibiting strategic features in processing and utilization conditions, thus leading to important developments towards the obtainment of electronic organic materials such as photovoltaic cells.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
