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Tytuł artykułu

Electric Field Distribution in Hybrid Solar Cells Comprising an Organic Donor Polymer and Amorphous Silicon

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
We present a study on the performance and analysis of hybrid solar cells comprising a planar heterojunction between between a conjugated donor polymer, P3HT or PCPDTBT, and hydrogenated amorphous silicon (a-Si:H). A comparison of the modeled absorption spectra of the layer stack with the measured external quantum efficiency is used to investigate the contribution of the inorganic and organic material to the photocurrent generation in the device. Although both materials contribute to the photocurrent, the devices exhibit poor quantum efficiencies and low short circuit currents. Bandstructure simulations of the hybrid layer structure reveal that an unfavorable electric field distribution within the planar multilayer structure limits the performance. Using electroabsorption measurements we can show that the electric field is extremelyweak in the amorphous silicon but strong in the organic material. The situation changes drasticallywhen the conjugated polymer is p-doped. Doping not only increases the conductivity of the organic material, but also restores the electric field in the amorphous silicon layer. Optimized hybrid solar cells comprising thin doped P3HT layers exhibit energy conversion efficiencies (ECE) up to 2.8 %.
Słowa kluczowe
Wydawca

Rocznik
Tom
2
Numer
1
Opis fizyczny
Daty
otrzymano
2013-08-16
zaakceptowano
2014-01-10
online
2014-06-09
Twórcy
autor
  • Universität Potsdam, Institute of Physics and Astronomy, Soft Matter Physics, D-14476 Potsdam, Germany
autor
  • Universität Potsdam, Institute of Physics and Astronomy, Soft Matter Physics, D-14476 Potsdam, Germany
autor
  • Universität Potsdam, Institute of Physics and Astronomy, Soft Matter Physics, D-14476 Potsdam, Germany
  • Department of Silicon Photovoltaics, Helmholtz Center Berlin for Materials and Energy, Kekulestr. 5, D-12489 Berlin, Germany
autor
  • Department of Silicon Photovoltaics, Helmholtz Center Berlin for Materials and Energy, Kekulestr. 5, D-12489 Berlin, Germany
autor
  • Department of Silicon Photovoltaics, Helmholtz Center Berlin for Materials and Energy, Kekulestr. 5, D-12489 Berlin, Germany
autor
  • Department of Silicon Photovoltaics, Helmholtz Center Berlin for Materials and Energy, Kekulestr. 5, D-12489 Berlin, Germany
  • IEK5-Photovoltaik, Forschungszentrum Jülich, D-52425 Jülich, Germany
autor
  • IEK5-Photovoltaik, Forschungszentrum Jülich, D-52425 Jülich, Germany
autor
  • Bergische Universität Wuppertal, Macromolecular Chemistry and Institute for Polymer Technology, Gauss-Strasse 20, D-42097 Wuppertal, Germany
autor
  • Bergische Universität Wuppertal, Macromolecular Chemistry and Institute for Polymer Technology, Gauss-Strasse 20, D-42097 Wuppertal, Germany
Bibliografia
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  • [6] K. Kim, J. Liu, M. A. G. Namboothiry, and D. L. Carroll, AppliedPhysics Letters 90, 3 (2007).
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  • [8] R. A. Street, Hydrogenated Amorphous Silicon, Cambridge UniversityPress, Cambridge, 1 edition, 1991.
  • [9] M. Morana, M. Wegscheider, A. Bonanni, N. Kopidakis, S. Shaheen,M. Scharber, Z. Zhu, D. Waller, R. Gaudiana, and C. Brabec, Adv. Func. Mater. 18, 1757 (2008).
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  • [12] S. Albrecht, W. Schindler, J. Kurpiers, J. Kniepert, J. C.Blakesley, I. Dumsch, S. Allard, K. Fostiropoulos, U. Scherf,and D. Neher, Journal of Physical Chemistry Letters 3, 640(2012).[Crossref]
  • [13] D. Mühlbacher, M. Scharber, M. Morana, Z. Zhu, D. Waller,R. Gaudiana, and C. J. Brabec, Advanced Materials 18, 2884(2006).[Crossref]
  • [14] K. F. Jeltsch, M. Schädel, J. B. Bonekamp, P. Niyamakom,F. Rauscher, H.W. A. Lademann, I. Dumsch, S. Allard, U. Scherf,and K. Meerholz, Adv. Funct. Mater. 22, 397 (2012).[Crossref]
  • [15] Z. Zhu, D. Waller, R. Gaudiana, M. Morana, D. Mühlbacher,M. Scharber, and C. J. Brabec, Macromolecules 40, 1981(2007).
  • [16] G. F. Burkhard, E. T. Hoke, and M. D. McGehee, Advanced Materials22, 3293 (2010).[Crossref]
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  • [25] P. A. Lane, J. Rostalski, C. Giebeler, S. J.Martin, D. D. C. Bradley,and D. Meissner, Solar Energy Materials and Solar Cells 63, 3(2000).
  • [26] M. C. Gather, R. Jin, J. de Mello, D. D. C. Bradley, and K. Meerholz,Applied Physics B 95, 113 (2009).
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Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_2478_oph-2014-0004
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