Electrical characterization of fluorinated benzothiadiazole based conjugated copolymer – a promising material for high-performance solar cells

Journal Article · Tue Dec 15 00:00:00 EST 2015 · AIP Advances

DOI:https://doi.org/10.1063/1.4939579· OSTI ID:22492254

Toušková, J.; Chomutová, R. ^[1]; Remeš, Z.; Čermák, J. ^[2]; Helgesen, M.; Carlé, J. E.; Krebs, F. C. ^[3]

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1. Charles University in Prague, Faculty of Mathematics and Physics, V Holešovičkách 2, 182 00 Prague 8 (Czech Republic)
2. Institute of Physics of the Academy of Sciences, Cukrovarnická 10, 162 53 Prague 6 (Czech Republic)
3. Department of Energy Conversion and Storage, Technical University of Denmark, Frederiksborgvej 399, DK-4000 Roskilde (Denmark)

Measurements of electrical conductivity, electron work function, carrier mobility of holes and the diffusion length of excitons were performed on samples of conjugated polymers relevant to polymer solar cells. A state of the art fluorinated benzothiadiazole based conjugated copolymer (PBDT{sub THD} − DTBTff) was studied and benchmarked against the reference polymer poly-3-hexylthiophene (P3HT). We employed, respectively, four electrode conductivity measurements, Kelvin probe work function measurements, carrier mobility using charge extraction by linearly increasing voltage (CELIV) measurements and diffusion length determinaton using surface photovoltage measurements.

• OSTI ID: 22492254
• Journal Information: AIP Advances, Vol. 5, Issue 12; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 2158-3226
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
BENCHMARKS
CARRIER MOBILITY
COPOLYMERS
DIFFUSION LENGTH
ELECTRIC CONDUCTIVITY
ELECTRIC POTENTIAL
ELECTRODES
ELECTRONS
EXCITONS
HOLES
PERFORMANCE
SOLAR CELLS
SURFACES
THIADIAZOLES
WORK FUNCTIONS