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O: Fachverband Oberflächenphysik

O 41: Inorganic/Organic Interfaces

O 41.26: Poster

Dienstag, 17. März 2015, 18:15–21:00, Poster B

Sythesis and characterization of bulk heterojunction solar cells based on nanoporous templates — •Sven Hilke¹, Stefan Ostendorp¹, Christian Strassert², and Gerhard Wilde¹ — ¹Institut für Materialphysik, WWU Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany — ²Physikalisches Institut, WWU Münster, Wilhelm-Klemm-Str. 10, 48149 Münster, Germany

The well-known system ZnPc:C60 (Zn-Phthalocyanine:Fullerene) as a model system of bulk-heterojunction solar cells has been chosen to analyze the effect of a nanoporous pre-structuring on the applicability of the resulting hetero molecular mixture. In this context, the basis of the pre-structuring are Anodic Aluminum Oxide (AAO) membranes made of aluminum oxide constructed by electrochemical processes. The thermal deposition of the ZnPc and C60 is done in an HV-environment so that clean layers are generated and precipitate in the membrane. Obviously, the pre-structuring directly influences the morphology on the nanometer scale. The presented work consists of the controlled growth of the nanoporous templates to obtain regular pore structures with equal and uniformly distributed surface area in the hetero intersection. In addition, every single nanopore is individually functional so that the failure of a single nanopore does not cause the destruction of the whole solar cell because each pore is able to operate by itself. Optical and electrical characterizations are used to analyze the obtained structures.