Dresden 2017 – wissenschaftliches Programm
CPP 49.12: Poster
Mittwoch, 22. März 2017, 18:30–21:00, P2-OG1
Morphology improvement of ZnO/P3HT-b-PEO bulk heterojunction films by using a low temperature route — •Kun Wang1, Yu Tong2, Rui Wang3, Stephan V.Roth4, Lorenz Bießmann1, and Peter Müller-Buschbaum1 — 1TU München, Physik-Department, LS Funktionelle Materialien, James-Franck-Str. 1, 85748 Garching — 2LMU, Department für Physik und CeNS, Amalienstraße 54, 80799 München — 3JCNS at MLZ, Lichtenbergstr. 1, 85748 Garching — 4DESY, Notkestr. 85, 22607 Hamburg
Hybrid solar cells, a combination of conventional inorganic and organic photovoltaic systems, offer outstanding potential due to their minor investment compared to inorganic solar cells and higher stability compared to organic solar cells. However, so far device efficiencies are significantly lower as compared to the other photovoltaic systems. A possible way to improve the film structure and thereby the device efficiency is to introduce amphiphilic block copolymers into the sol-gel synthesis of the inorganic part such as ZnO. Unlike the traditional diblock copolymer, in the present approach we make use of a new functional block copolymer PEO-b-P3HT. In the PEO block the ZnO phase is synthesized and the P3HT block can be used directly as the hole transporting layer. The nanostructure inside thin films is probed with GISASXS. Moreover, SEM and AFM detect the surface morphology of the composite films.The optical properties are examined with UV/Vis spectroscopy and the thickness is investigated by profilometry measurements.