The effects of a moderate variation of the molecular weight on the optical, structural, morphological and transport properties of an anthracene-containing PPE-PPV copolymer are investigated, as well as their overall implication on the photovoltaic parameters of bulk-heterojunction solar cells. Just a two-fold variation in the molecular weight is enough to induce appreciable changes in the properties of the investigated polymer films, indicating that a fine tuning of the macromolecular parameters is required for the optimization of the properties of polydispersed molecular systems. A remarkable role of the polydispersity index in the organization of polymer chains, thus reflecting in the electronic properties of the polymer films, is observed.
Tuning the properties of an anthracene-based PPE-PPV copolymer by fine variation of its macromolecular parameters
Tinti F;Gazzano M;Camaioni N
2013
Abstract
The effects of a moderate variation of the molecular weight on the optical, structural, morphological and transport properties of an anthracene-containing PPE-PPV copolymer are investigated, as well as their overall implication on the photovoltaic parameters of bulk-heterojunction solar cells. Just a two-fold variation in the molecular weight is enough to induce appreciable changes in the properties of the investigated polymer films, indicating that a fine tuning of the macromolecular parameters is required for the optimization of the properties of polydispersed molecular systems. A remarkable role of the polydispersity index in the organization of polymer chains, thus reflecting in the electronic properties of the polymer films, is observed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
