Dresden 2006 – scientific programme

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CPP: Chemische Physik und Polymerphysik

CPP 21: SYMPOSIUM Functional Organic Thin Films II

CPP 21.10: Talk

Thursday, March 30, 2006, 16:45–17:00, ZEU Lich

Optimising Polythiophene based bulk heterojunction solar cells reaching 5% power conversion efficiency — •Harald Hoppe, Tobias Erb, and Gerhard Gobsch — Institute of Physics, Ilmenau Technical University, Weimarer Str. 32, 98693 Ilmenau, Germany

State of the art plastic solar cells reaching power conversion efficiencies of 5% are reported. These solar cells are based on the poly(3-alkyl)thiophene-fullerene bulk heterojunction system, exhibiting a relatively low fullerene content. To obtain the optimum balance between charge generation and transport, the film thickness of the photoactive layer was varied. Morphological factors for reaching efficient and stable devices are discussed.