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Effect of polymer crystallinity in P3HT:PCBM solar cells on band gap trap states and apparent recombination order

(2013) ADVANCED ENERGY MATERIALS. 3(4). p.466-471
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Abstract
The non-geminate recombination of charge carriers in polymer-fullerene solar cells has been modeled in the last few years with a trap-assisted recombination model, which states that the apparent recombination order depends on the concentration of trapped charges tailing into the band gap. Higher concentrations of trapped charges lead to higher apparent recombination orders. In this work, the mass fraction f of highly crystalline nanofibrillar P3HT to the total P3HT content in P3HT:PCBM solar cells is consistently varied, controlling the temperature of a nanofibers-P3HT casting dispersion. A systematic study of the apparent recombination order, measured with a transient photovoltage technique, as a function of f is presented. A correlation is shown between the apparent recombination order, the P3HT crystallinity, and the trap concentration in the band gap measured with an admittance spectroscopy technique
Keywords
PHOTOVOLTAIC CELLS, OPEN-CIRCUIT VOLTAGE, CHARGE-DENSITY, ADMITTANCE, MORPHOLOGY, BLEND, FILMS, LAYERS, admittance spectroscopy, crystallinity, recombination, TPV, traps

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Citation

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Chicago
Spoltore, Donato, Wibren D Oosterbaan, Samira Khelifi, John N Clifford, Aurelien Viterisi, Emilio Palomares, Marc Burgelman, Laurence Lutsen, Dirk Vanderzande, and Jean Manca. 2013. “Effect of Polymer Crystallinity in P3HT:PCBM Solar Cells on Band Gap Trap States and Apparent Recombination Order.” Advanced Energy Materials 3 (4): 466–471.
APA
Spoltore, D., Oosterbaan, W. D., Khelifi, S., Clifford, J. N., Viterisi, A., Palomares, E., Burgelman, M., et al. (2013). Effect of polymer crystallinity in P3HT:PCBM solar cells on band gap trap states and apparent recombination order. ADVANCED ENERGY MATERIALS, 3(4), 466–471.
Vancouver
1.
Spoltore D, Oosterbaan WD, Khelifi S, Clifford JN, Viterisi A, Palomares E, et al. Effect of polymer crystallinity in P3HT:PCBM solar cells on band gap trap states and apparent recombination order. ADVANCED ENERGY MATERIALS. 2013;3(4):466–71.
MLA
Spoltore, Donato, Wibren D Oosterbaan, Samira Khelifi, et al. “Effect of Polymer Crystallinity in P3HT:PCBM Solar Cells on Band Gap Trap States and Apparent Recombination Order.” ADVANCED ENERGY MATERIALS 3.4 (2013): 466–471. Print.
@article{3179202,
  abstract     = {The non-geminate recombination of charge carriers in polymer-fullerene solar cells has been modeled in the last few years with a trap-assisted recombination model, which states that the apparent recombination order depends on the concentration of trapped charges tailing into the band gap. Higher concentrations of trapped charges lead to higher apparent recombination orders. In this work, the mass fraction f of highly crystalline nanofibrillar P3HT to the total P3HT content in P3HT:PCBM solar cells is consistently varied, controlling the temperature of a nanofibers-P3HT casting dispersion. A systematic study of the apparent recombination order, measured with a transient photovoltage technique, as a function of f is presented. A correlation is shown between the apparent recombination order, the P3HT crystallinity, and the trap concentration in the band gap measured with an admittance spectroscopy technique},
  author       = {Spoltore, Donato and Oosterbaan, Wibren D and Khelifi, Samira and Clifford, John N and Viterisi, Aurelien and Palomares, Emilio and Burgelman, Marc and Lutsen, Laurence and Vanderzande, Dirk and Manca, Jean},
  issn         = {1614-6832},
  journal      = {ADVANCED ENERGY MATERIALS},
  language     = {eng},
  number       = {4},
  pages        = {466--471},
  title        = {Effect of polymer crystallinity in P3HT:PCBM solar cells on band gap trap states and apparent recombination order},
  url          = {http://dx.doi.org/10.1002/aenm.201200674},
  volume       = {3},
  year         = {2013},
}

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