Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

CPP 19: Poster Session 1 (joint session with BP)

CPP 19.60: Poster

Dienstag, 1. April 2014, 09:30–13:00, P1

Charge transport and energetics in merocyanine-C60 organic solar cells — •Jens Wehner, Carl Poelking, and Denis Andrienko — Max Planck Institute for Polymer Research, Ackermannweg 10, 55128 Mainz, Germany

Solar cells with efficiencies of more than 10% have recently been reported for a number of small-molecule-based organic solar cells. Among these, cells based on merocyanine dyes (easy to mass-produce and purify colorants with high absorption coefficients) offer an opportunity to make both solution and vacuum-processed devices. Due to the donor-acceptor architecture of the molecule, these compounds have large dipole moments, which in principle should impede charge mobility and change the transport levels at the donor-acceptor interface. By combining molecular dynamics simulations and quantum chemical methods we study charge transport as well as energetics at these interfaces and show why merocyanines are efficient donors in combination with C60 as an acceptor.