Optical Properties of Donor–Acceptor Conjugated Copolymers: A Computational Study

Alexis Fradon 1, 2 Eric Cloutet 2, 1 Georges Hadziioannou 1, 2 Cyril Brochon 1, 2 Frédéric Castet 3, *
* Auteur correspondant
1 LCPO - Laboratoire de Chimie des Polymères Organiques
2 TEAM 4 LCPO
3 ISM - Institut des Sciences Moléculaires
Abstract : TDDFT calculations are associated to an extrapolation scheme to predict the optical properties of twelve donor-acceptor copolymers, in which carbazole, benzodithiophene or cyclopentadithiophene donor subunits are combined to benzofurazane, benzothiadiazole or diketopyrrolopyrrole acceptor moieties. Relative excitation energies and absorption strengths are rationalized in terms of geometrical, electronic and optical descriptors. It is shown that the combination of a cyclopentadithiophene with a diketopyrrolopyrrole leads to the lowest excitation energy and highest light absorption efficiency within the series. However, combining cyclopentadithiophene and benzodithiophene subunits appears as more efficient for solar cell applications due to better energy level alignment with respect to PCBM.
Keywords : solar cell donor-acceptor copolymer TDDFT
Type de document :
Article dans une revue
Chemical Physics Letters, Elsevier, 2017, 678, pp.9-16. 〈10.1016/j.cplett.2017.04.016〉
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https://hal.archives-ouvertes.fr/hal-01505581
Contributeur : Eric Cloutet <>
Soumis le : mardi 11 avril 2017 - 14:52:03
Dernière modification le : jeudi 11 janvier 2018 - 06:28:09

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UNIV-BORDEAUX | INC-CNRS

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Alexis Fradon, Eric Cloutet, Georges Hadziioannou, Cyril Brochon, Frédéric Castet. Optical Properties of Donor–Acceptor Conjugated Copolymers: A Computational Study. Chemical Physics Letters, Elsevier, 2017, 678, pp.9-16. 〈10.1016/j.cplett.2017.04.016〉. 〈hal-01505581〉

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