DPG Phi
Verhandlungen
Verhandlungen
DPG

Dresden 2011 – scientific programme

Parts | Days | Selection | Search | Updates | Downloads | Help

HL: Fachverband Halbleiterphysik

HL 45: Joint Poster Session

HL 45.20: Poster

Tuesday, March 15, 2011, 18:00–21:00, P1

Solution processed bulk heterojunction solar cells with molecularly doped active layers — •Antonietta De Sio1, Ali Veysel Tunc1, Elizabeth von Hauff1, Felix Deschler2, Enrico Da Como2, and Jürgen Parisi11Energy and Semiconductor Research Laboratory, Institute of Physics, Carl von Ossietzky Universität Oldenburg, 26111 Oldenburg, Germany — 2Photonics and Optoelectronics Group, Department of Physics and CeNS, Ludwig-Maximilians-Universität München, 80799, Munich, Germany

We report on the improvement of the device performance of polymer:fullerene bulk heterojunction solar cells by molecularly doping the active layer. 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4-TCNQ) was used to p-dope the low bandgap polymer poly[2,6(4,4-bis-(2-ethylhexyl)-4H-cyclopenta[2,1-b:3,4-b0]-dithiophene)-alt-4,7-(2,1,3-benzothiadiazole)] (PCPDTBT) that was then blended with the soluble fullerene derivative [6,6]-phenyl-C61-butyric acid methyl ester (PCBM). Blends with different doping concentrations were investigated. We show how the short circuit current densities of the photovoltaic devices increase with the doping concentration as a result of an enhancement of the field effect mobilities.

100% | Mobile Layout | Deutsche Version | Contact/Imprint/Privacy
DPG-Physik > DPG-Verhandlungen > 2011 > Dresden