Dresden 2014 – wissenschaftliches Programm

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CPP: Fachverband Chemische Physik und Polymerphysik

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

CPP 19.20: Poster

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

Performance of P3HT:PCBM solar cells modified with iron oxide nanoparticles — •Daniel Moseguí González and Peter Müller-Buschbaum — TU München, Physik-Department - LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching

Among the different systems studied in organic solar cells, the combination of P3HT:PCBM has received the highest attention. Recently, the performance of such devices under magnetic stress has been investigated. In the case of organic electronic devices, the addition of magnetic fields can be achieved via the incorporation of iron oxide nanoparticles, which has been reported as a factor influencing the device performance [1]. Magnetic fields, amongst other effects, alter the position of the molecular energy levels, allowing "a priori" forbidden spin transitions. Moreover, the presence of heavy metals increases the L-S coupling in the system, increasing the rate of intersystem crossing. The aim of the present investigation is to characterize through which channels the presence of iron oxide nanoparticles affects the performance of P3HT:PCBM based solar cells. The morphology evolution is tracked with scattering techniques. Spectral behavior and electrical response of devices are also investigated.

[1] Zhang et al., Sol. Energ. Mat. Sol. Cells, 95 (2011) 2880-2885