Berlin 2008 – wissenschaftliches Programm

Bereiche | Tage | Auswahl | Suche | Downloads | Hilfe

HL: Fachverband Halbleiterphysik

HL 36: Poster III

HL 36.17: Poster

Mittwoch, 27. Februar 2008, 16:30–19:00, Poster D

Effect of vacuum pressure during metal electrode sublimation on polymer solar cell performance — •Florian Kühnlenz, Gerhard Gobsch, and Harald Hoppe — Institute of Physics, Ilmenau University of Technology, Weimarer Str. 32, 98693 Ilmenau, Germany

Polymer solar cells based on P3HT/PCBM were prepared identically * except for a variation in the production parameter of the aluminium electrode sublimation. By increasing the pump-down time of the evaporation chamber the pressure for the aluminium sublimation could be decreased over several decades to different final processing values. We found a clear dependence of the chamber pressure during electrode deposition on the overall solar cell performance. We suggest this pressure dependence to be connected with the slow desorption of O2 and H2O from the spin cast layers, because the production of the active layer of the solar cell took place at environmental conditions in air and the underlying PEDOT:PSS layer was processed from aqueous solution.