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

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.
Authors:
; ;  [1] ; ;  [2] ; ; ;  [3]
  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)
Publication Date:
OSTI Identifier:
22492254
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Advances; Journal Volume: 5; Journal Issue: 12; Other Information: (c) 2015 Author(s); Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BENCHMARKS; CARRIER MOBILITY; COPOLYMERS; DIFFUSION LENGTH; ELECTRIC CONDUCTIVITY; ELECTRIC POTENTIAL; ELECTRODES; ELECTRONS; EXCITONS; HOLES; PERFORMANCE; SOLAR CELLS; SURFACES; THIADIAZOLES; WORK FUNCTIONS