Regensburg 2016 – wissenschaftliches Programm

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DS: Fachverband Dünne Schichten

DS 12: Postersession DS

DS 12.19: Poster

Montag, 7. März 2016, 17:00–19:00, Poster A

Controlling the energetics at the interface of p-doped low band gap polymer — •Milutin Ivanović, Heiko Peisert, and Thomas Chassé — University of Tübingen, Institute of Physical and Theoretical Chemistry, 72076 Tübingen, Germany

Polymer/fullerene based organic photovoltaic cells (OPVCs) have been extensively investigated as a promising technology for the rising energy demand, in particular due to their low cost production potential. One approach to achieve more efficient OPVCs is the molecular p-doping of the polymer in thin films affecting the energy level alignment between the donor and both the acceptor and the electrode.1, 2 We studied interfaces with substrates and the fullerene C60, of thin films of prototype low bandgap polymer PCPDTBT, doctor blade casted on substrates with wide span of work functions. We employ X-ray and Ultraviolet photoelectron spectroscopy to investigate interface properties of the pure and F4TCNQ doped polymer. It is found that p-doping can be useful tool for tuning/controling energetics at both polymer interfaces.

References: 1.*Bao, Q. et al. Advanced Materials Interfaces 2015, 2, n/a-n/a. 2.*Yu, S. et al. Applied Physics Letters 2015, 106, 203301.