Interface state recombination in organic solar cells

Details

Event Physical Review B

Authors

Street, Robert A.
Megan Schoendorf
Technical Publications
May 7th 2010
Recombination in bulk heterojunction organic solar cells based on polycarbazole/fullerene blends are studied through measurements of the solar cell response. Different recombination mechanisms are analyzed, including recombination of the charge transfer exciton, Auger recombination and recombination at interfacial localized states. The measured recombination kinetics, the temperature dependence of the current-voltage characteristics, the dark forward bias diode current, and modeling studies, all indicate that the dominant recombination is through interface states between the polymer and fullerene domains, with an estimated density of 10e11 - 10e12 cm-2. Modeling studies indicate that a 10-fold reduction in the interface state density could potentially double the solar cell efficiency.

Citation

Street, R. A.; Schoendorf, M.; Roy, A.; Lee, J. Interface state recombination in organic solar cells. Physical Review B. 2010; 81: 205307.

Additional information

Focus Areas

Our work is centered around a series of Focus Areas that we believe are the future of science and technology.

FIND OUT MORE
Licensing & Commercialization Opportunities

We’re continually developing new technologies, many of which are available for¬†Commercialization.

FIND OUT MORE
News

PARC scientists and staffers are active members and contributors to the science and technology communities.

FIND OUT MORE