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- Title
Comparison of Bimolecular Charge Carrier Recombination in π-conjugated Polymers and Bulk-Heterojunction Solar Cells.
- Authors
Pivrikas, A.; Österbacka, R.; Juška, G.; Arlauskas, K.; Scharber, M.; Mozer, A. J.; Sariciftci, N. S.
- Abstract
By using Time-of-Flight technique we have measured charge carrier transport and recombination in the π-conjugated polymer regio-random poly(3-hexylthiophene (RRaPHT) and in two types of bulk-heterojunction solar-cells, namely in a blend of regioregular poly(3-hexylthiophene) mixed with 1-(3-methoxycarbonyl) propyl-l-phenyl-[6, 6]-methanofullerene (RRPHT/PCBM) and in the blend of poly[2-methoxy-5-(3, 7-dimethyloctyloxy)-phenylene vinylene] mixed with PCBM (MDMO:PPV/PCBM). We found Langevin-type charge carrier recombination in pure RRaPHT and in the MDMO:PPV/PCBM blend, while greatly reduced bimolecular recombination (compared to Langevin-type) was observed in the RRPHT/PCBM solar cell.
- Subjects
POLYMERS; HETEROJUNCTIONS; SOLAR cells; TIME-of-flight mass spectrometry; LANGEVIN equations
- Publication
Nonlinear Optics, Quantum Optics: Concepts in Modern Optics, 2007, Vol 37, Issue 1-3, p169
- ISSN
1543-0537
- Publication type
Article