Interface state recombination in organic solar cells
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- 7 May 2010
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 81 (20), 205307
- https://doi.org/10.1103/physrevb.81.205307
Abstract
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 order . Modeling studies indicate that a tenfold reduction in the interface state density could potentially double the solar-cell efficiency.
This publication has 30 references indexed in Scilit:
- Bulk heterojunction solar cells with internal quantum efficiency approaching 100%Nature Photonics, 2009
- Electro-optical modeling of bulk heterojunction solar cellsJournal of Applied Physics, 2008
- Control of Electric Field Strength and Orientation at the Donor–Acceptor Interface in Organic Solar CellsAdvanced Materials, 2008
- Efficient Tandem Polymer Solar Cells Fabricated by All-Solution ProcessingScience, 2007
- Optimum charge carrier mobility in organic solar cellsApplied Physics Letters, 2007
- Ultimate efficiency of polymer/fullerene bulk heterojunction solar cellsApplied Physics Letters, 2006
- Bimolecular recombination in polymer/fullerene bulk heterojunction solar cellsApplied Physics Letters, 2006
- Comparison of the device physics principles of planar and radial p-n junction nanorod solar cellsJournal of Applied Physics, 2005
- Separation of geminate charge-pairs at donor–acceptor interfaces in disordered solidsChemical Physics Letters, 2004
- Photoinduced Electron Transfer from a Conducting Polymer to BuckminsterfullereneScience, 1992