In-depth study of the binary and ternary organic solar cells based on a novel indacenodithieno[3,2-b]thiophene based conjugated polymer

Nicola Gasparini^a, Derya Baran^a, Michael Salvador^a, Tayebeh Ameri^a, Christoph J. Brabec^a^,^d, Christos L. Chochos^b, Apostolos Avgeropoulos^b, Athanasios Katsouras^b, Mamantos I. Prodromidis^c

^aInstitute of Materials for Electronics and Energy Technology (I-MEET), Friedrich-Alexander-University Erlangen-Nuremberg, Martensstrasse 7, Erlangen, 91058, Germany

^bDepartment of Materials Science Engineering, University of Ioannina, Ioannina 45110

^cDepartment of Chemistry, University of Ioannina, Ioannina 45110

^dBavarian Center for Applied Energy Research (ZAE Bayern), Haberstr. 2a, 91058 Erlangen, Germany

International Conference on Hybrid and Organic Photovoltaics
Proceedings of International Conference on Hybrid and Organic Photovoltaics 2015 (HOPV15)

Roma, Italy, 2015 May 11th - 13th

Organizer: Filippo De Angelis

Poster, Nicola Gasparini, 197
Publication date: 5th February 2015

Donor-acceptor (D-A) high band gap (HBG) conjugated polymers (E_g^opt ≥ 1.7 eV) with excellent photovoltaic properties, promising environmental stability, up-scaling ability and reproducibility are strongly requested for large-scale production of organic photovoltaics (OPVs). The strong electron rich moiety groups of indacenodithiophene or indacenodithieno[3,2-b]thiophene arewidely used as donors for the construction of D-A polymers for applications in polymer solar cells. Here, a new (D-A) high band gap conjugated polymer (PIDT32TQx8) consisting of indacenodithieno[3,2-b]thiophene and 2,3-bis(3-(octyloxy)phenyl)quinoxaline as the electron deficient unit is investigated in the ordinary binary system in combination with fullerene derivatives. Furthermore, implementing PIDT32TQx8 as the host polymer matrix in the ternary organic solar cells led to the highly efficient photovoltaics for the low light intensity applications. Various optoelectrical techniques such as current-voltage characterization with different light intensities, EQE measurement, photoinduced charge carrier extraction by linear increasing voltage (Photo-CELIV) technique, electroluminescence emission (EL) and Fourier Transform Photocurrent Spectroscopy (FTPS) are employed to fully understand the potentiality of this material.

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International Conference on Hybrid and Organic Photovoltaics

International Conference on Hybrid and Organic Photovoltaics (HOPV) is celebrated yearly in May. The main topics are the development, function and modeling of materials and devices for hybrid and organic solar cells. The field is now dominated by perovskite solar cells but also other hybrid technologies, as organic solar cells, quantum dot solar cells, and dye-sensitized solar cells and their integration into devices for photoelectrochemical solar fuel production.

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