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Interfacial States in Donor–Acceptor Organic Heterojunctions: Computational Insights into Thiophene-Oligomer/Fullerene Junctions

MPG-Autoren
http://pubman.mpdl.mpg.de/cone/persons/resource/persons58994

Sen,  Kakali
Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58496

Crespo-Otero,  Rachel
Research Group Barbatti, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons59045

Thiel,  Walter
Research Department Thiel, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

http://pubman.mpdl.mpg.de/cone/persons/resource/persons58410

Barbatti,  Mario
Research Group Barbatti, Max-Planck-Institut für Kohlenforschung, Max Planck Society;

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ct300844y_si_001.pdf
(Ergänzendes Material), 704KB

Zitation

Sen, K., Crespo-Otero, R., Weingart, O., Thiel, W., & Barbatti, M. (2013). Interfacial States in Donor–Acceptor Organic Heterojunctions: Computational Insights into Thiophene-Oligomer/Fullerene Junctions. Journal of Chemical Theory and Computation, 9(1), 533-542. doi:10.1021/ct300844y.


Zitierlink: http://hdl.handle.net/11858/00-001M-0000-0014-A430-C
Zusammenfassung
Donor–acceptor heterojunctions composed of thiophene oligomers and C60 fullerene were investigated with computational methods. Benchmark calculations were performed with time-dependent density functional theory. The effects of varying the density functional, the number of oligomers, the intermolecular distance, the medium polarization, and the chemical functionalization of the monomers were analyzed. The results are presented in terms of diagrams where the electronic states are classified as locally excited states, charge-transfer states, and delocalized states. The effects of each option for computational simulations of realistic heterojunctions employed in photovoltaic devices are evaluated and discussed.