Photo-induced intramolecular charge transfer in an ambipolar field-effect transistor based on a pi-conjugated donor-acceptor dyad

Pfattner, R.; Pavlica, E.; Jaggi, Michael; Liu, Shi-Xia; Decurtins, Silvio; Bratina, G.; Veciana, J.; Mas-Torrent, M.; Rovira, C. (2013). Photo-induced intramolecular charge transfer in an ambipolar field-effect transistor based on a pi-conjugated donor-acceptor dyad. Journal of materials chemistry C, 1(25), pp. 3985-3988. Royal Society of Chemistry 10.1039/c3tc30442f

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A pi-conjugated tetrathiafulvalene-fused perylenediimide (TTF-PDI) molecular dyad is successfully used as a solution-processed active material for light sensitive ambipolar field-effect transistors with balanced hole and electron mobilities. The photo-response of the TTF-PDI dyad resembles its absorption profile. Wavelength-dependent photoconductivity measurements reveal an important photo-response at an energy corresponding to a PDI-localized electronic pi-pi* transition and also a more moderate effect due to an intramolecular charge transfer from the HOMO localized on the TTF unit to the LUMO localized on the PDI moiety. This work clearly elucidates the interplay between intra- and intermolecular electronic processes in organic devices.

Item Type:

Journal Article (Original Article)

Division/Institute:

08 Faculty of Science > Department of Chemistry, Biochemistry and Pharmaceutical Sciences (DCBP)

UniBE Contributor:

Jaggi, Michael; Liu, Shi-Xia and Decurtins, Silvio

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 540 Chemistry

ISSN:

2050-7526

Publisher:

Royal Society of Chemistry

Language:

English

Submitter:

Gabriela Claudia Frei

Date Deposited:

12 Apr 2014 10:45

Last Modified:

23 Feb 2021 18:12

Publisher DOI:

10.1039/c3tc30442f

Additional Information:

158QU Times Cited:2 Cited References Count:28

Uncontrolled Keywords:

thin-film transistors high-performance ambipolar building-blocks mobility transport diimide polymer phototransistors semiconductors derivatives

BORIS DOI:

10.7892/boris.46369

URI:

https://boris.unibe.ch/id/eprint/46369

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