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All-thiophene donor-acceptor blends: photophysics, morphology and photoresponse (Articolo in rivista)
- Type
- Label
- All-thiophene donor-acceptor blends: photophysics, morphology and photoresponse (Articolo in rivista) (literal)
- Anno
- 2005-01-01T00:00:00+01:00 (literal)
- Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
- 10.1039/b413830a (literal)
- Alternative label
G. Ridolfi, N. Camaioni, P. Samori`, M. Gazzano, G. Accorsi, N. Armaroli, L. Favaretto, G. Barbarella, (2005)
All-thiophene donor-acceptor blends: photophysics, morphology and photoresponse
in Journal of materials chemistry (Print)
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- G. Ridolfi, N. Camaioni, P. Samori`, M. Gazzano, G. Accorsi, N. Armaroli, L. Favaretto, G. Barbarella, (literal)
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- ISI Web of Science (WOS) (literal)
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- Titolo
- All-thiophene donor-acceptor blends: photophysics, morphology and photoresponse (literal)
- Abstract
- We report on the photophysical, morphological and photoresponse properties of blends of a
regioregular poly(3-hexylthiophene) (P3HT) as the electron-donor and a quinquethiophene-
S,S-dioxide (T5OHM) as the electron-acceptor. A scanning force microscopy study on 100 nm
thick blended films revealed the occurrence of a notable phase segregation between the two
components and a remarkable tendency of the acceptor molecule to form micrometre sized
architectures characterized by sharp edges within the amorphous matrix of P3HT. X-Ray
diffraction studies confirmed the high degree of crystallinity of T5OHM in the blended films. The
interaction of the oligomer with the polymer resulted in an enhanced photoinduced charge
separation, leading to a sixty-fold increase of the power conversion efficiency in the blended cells
with respect to the pristine device based on neat P3HT. (literal)
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