TY  - JOUR
A1  - Inal, Sahika
A1  - Castellani, Mauro
A1  - Sellinger, Alan
A1  - Neher, Dieter
T1  - Relationship of photophysical properties and the device performance of novel hybrid small-molecular/polymeric solar cells
N2  - We investigate solar cells comprised of a vinazene derivative (HV-BT) as the electron acceptor and the well- known polymer poly(3-hexylthiophene) as the electron donor. In the as-prepared blend, most of the excited state species, including the excimers on HV-BT, are quenched at the heterojunction. Although the photophysical properties of the blends change upon annealing, the blend solar cells largely remain uninfluenced by such treatments. A significant improvement is, however, observed when inducing phase separation at a longer length scale, for example, in solution-processed bilayer devices. Hereby, both the fill factor (FF) and the open circuit voltage are considerably increased, pointing to the importance of the heterojunction topology and the layer composition at the charge extracting contacts. An optimized device exhibits a power conversion efficiency of close to 1%.
Y1  - 2009
UR  - https://publishup.uni-potsdam.de/frontdoor/index/index/docId/31701
UR  - http://www3.interscience.wiley.com/cgi-bin/jhome/10003270
SN  - 1022-1336
ER  -