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Tytuł artykułu

Photoconductivity of Low-Bandgap Polymer and Polymer: Fullerene Bulk Heterojunction Studied by Constant Photocurrent Method

Treść / Zawartość
Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
Optical and photoelectric properties of modern photosensitive polymers are of great interest due to their prospects for photovoltaic applications. In particular, an investigation of absorption and photoconductivity edge of these materials could provide valuable information. For these purpose we applied the constant photocurrent method which has proved its efficiency for inorganic materials. PCDTBT and PTB7 polymers were used as objects for the study as well as their blends with a fullerene derivative PC71BM. The measurements by constant photocurrent method (CPM) show that formation of bulk heterojunction (BHJ) in the blends increases photoconductivity and results in a redshift of the photocurrent edge in the doped polymers compared with that in the neat polymers. Obtained from CPM data, spectral dependences of absorption coefficient were approximated using Gaussian distribution of density-of-states within HOMO (highest occupied molecular orbital) and LUMO (lowest unoccupied molecular orbital) bands. The approximation procedure allowed us to evaluate rather optical than electrical bandgaps for the studied materials. Moreover, spectra of polymer:PC71BM blends were fitted well by the sum of two Gaussian peaks which reveal both the transitions within the polymer and the transitions involving charge transfer states at the donor-acceptor interface in the BHJ.
Wydawca

Rocznik
Tom
3
Numer
1
Opis fizyczny
Daty
otrzymano
2014-09-24
zaakceptowano
2015-04-02
online
2015-08-19
Twórcy
autor
  • A.N. Frumkin Institute of Physical
    Chemistry and Electrochemistry of the Russian Academy of Sciences,
    Leninsky prosp. 31, Moscow 119071, Russia
autor
  • A.N. Frumkin Institute of Physical
    Chemistry and Electrochemistry of the Russian Academy of Sciences,
    Leninsky prosp. 31, Moscow 119071, Russia
  • A.N. Frumkin Institute of Physical
    Chemistry and Electrochemistry of the Russian Academy of Sciences,
    Leninsky prosp. 31, Moscow 119071, Russia
  • National Research University Higher School of Economics,
    Myasnitskaya Str. 20, Moscow 101000, Russia
  • M.V. Lomonosov Moscow State
    University, Faculty of Physics, Leninskie Gory, Moscow 119991 Russia
  • M.V. Lomonosov Moscow State
    University, Faculty of Physics, Leninskie Gory, Moscow 119991 Russia
  • A.N. Frumkin Institute of Physical
    Chemistry and Electrochemistry of the Russian Academy of Sciences,
    Leninsky prosp. 31, Moscow 119071, Russia
Bibliografia
  • [1] Bässler H. and Köhler A., Charge Transport in Organic Semiconductors,In: Metzger R. M. (Ed.), Unimolecular and SupramolecularElectronics I, Topics in Current Chemistry V.312, Springer-Verlag, Berlin Heidelberg, 2012.
  • [2] Knupfer M., Applied Physics A 77, 623 (2003).
  • [3] Deibel C., Mack D. Gorenflot J., Schöll A., Krause S., Reinert F.,Rauh D., and Dyakonov V., Phys. Rev. B 81, 085202 (2010).[Crossref]
  • [4] Wang H.,Wang H-Y., Gao B-R.,Wang L., Yang Z-Y., Du X.-B., ChenQ-D., Song J-F., and Sun H-B., Nanoscale 3, 2280 (2011).
  • [5] Nádaždy V., Schauer F., and Gmucová K., Appl.Phys.Lett. 105,142109 (2014)
  • [6] Deibel C., Strobel T., Dyakonov V., Phys. Rev. Lett. 103, 036402(2009).
  • [7] Vaněček M., Kočka J., Stuchlík J., and Tříska A., Solid State Communications39, 1199 (1981).[Crossref]
  • [8] Beenken W.J.D., Herrmann F., Presselt M., Hoppe H.,Shokhovets S., Gobsch G. and Runge E., Physical ChemistryChemical Physics 15,16494 (2013).[Crossref]
  • [9] Chiechi R. C., Havenith R.W.A., Hummelen J. C., Koster L. J. A.,Loi M. A., Materials Today 16, 281 (2013).[Crossref]
  • [10] Street R.A., Song K.W., Northrup J. E., and Cowan S., Phys. Rev.B 83, 165207 (2011).[Crossref]
  • [11] Liang Y., Xu Z., Xia J., Tsai S-T., Wu Y., Li G., Ray C., and Yu L.,Advanced Materials 22, E135 (2010).[Crossref]
  • [12] Blouin N., Michaud A., and Leclerc M., Advanced Materials 19,2295 (2007).[Crossref]
Typ dokumentu
Bibliografia
Identyfikatory
Identyfikator YADDA
bwmeta1.element.-psjd-doi-10_1515_oph-2015-0011
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