Regensburg 2013 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
CPP: Fachverband Chemische Physik und Polymerphysik
CPP 9: Poster: Interfaces and Thin Films (joint session with DECHEMA and VDI)
CPP 9.39: Poster
Monday, March 11, 2013, 17:30–19:30, Poster C
Effect of patterning on film morphology and device performance of BHJ organic solar cells — •Daniel Moseguí González1, Claudia M. Palumbiny1, Jan Perlich2, Stephan V. Roth2, and Peter Müller-Buschbaum1 — 1TU München, Physik Department E13, Lehrstuhl für Funktionelle Materialien, James-Franck-Str.1, 85747 Garching (Germany) — 2HASYLAB at DESY, Notkestr. 85, 22603 Hamburg (Germany)
Controlling morphology within polymer films for solar cells through imprinting procedures has been found to be a promising pathway to achieve high efficiency devices. These structured devices are expected to present improved performance due to light scattering and reflection effects, which lead to enhanced absorption without increasing film thickness. Furthermore, in the case of poly(3-hexylthiophene) a change in the crystalline orientation was observed, leading to higher conductivities and better device performance. So far limited work has been carried out investigating the inner morphological changes of imprinted blend devices. In this work, the effects of structuring BHJ poly(3-hexylthiophene): phenyl-C61-butyric acid methyl ester (P3HT:PC60BM) films are investigated. Imprinted surfaces are characterized with AFM. Moreover, crystallinity and internal film morphology is characterized using grazing incidence wide/small angle x-ray scattering (GIWAXS/GISAXS), respectively. In addition, x-ray reflectivity measurements provide supporting information for depth profiles. Finally, the characteristics of the device performance will be discussed and compared to the observed morphological changes.