Direct detection of photoinduced charge transfer complexes in polymer fullerene blends

نویسندگان

  • Jan Behrends
  • Andreas Sperlich
  • Alexander Schnegg
  • Till Biskup
  • Christian Teutloff
  • Klaus Lips
  • Vladimir Dyakonov
  • Robert Bittl
چکیده

Jan Behrends,1,* Andreas Sperlich,2 Alexander Schnegg,3 Till Biskup,1,† Christian Teutloff,1 Klaus Lips,3 Vladimir Dyakonov,2,4 and Robert Bittl1 1Fachbereich Physik, Freie Universität Berlin, Arnimallee 14, D-14195 Berlin, Germany 2Experimental Physics VI, Julius-Maximilians Universität Würzburg, Am Hubland, D-97074 Würzburg, Germany 3Institut für Silizium-Photovoltaik, Helmholtz-Zentrum Berlin für Materialien und Energie, Kekuléstrasse 5, D-12489 Berlin, Germany 4ZAE Bayern, Am Hubland, D-97074 Würzburg, Germany (Received 29 July 2011; revised manuscript received 28 October 2011; published 28 March 2012)

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Efficient two-step photogeneration of long-lived charges in ground-state charge-transfer complexes of conjugated polymer doped with fullerene.

Polarization-sensitive time-resolved visible-infrared pump-probe experiments demonstrate that one can efficiently generate long-lived charges in donor-acceptor charge transfer complex (CTC) of conjugated polymer doped with fullerene, MEH-PPV/dinitroanthraquinone/C(60). In particular, a strong enhancement of the photoinduced charge generation is observed in the red part of the spectrum, i.e. ins...

متن کامل

Morphology of polymer/fullerene bulk heterojunction solar cells

Within the different organic photovoltaic devices the conjugated polymer/fullerene bulk heterojunction approach is one of the foci of today’s research interest. These devices are highly dependent on the solid state nanoscale morphology of the two components (donor/acceptor) in the photoactive layer. The need for finely phase separated polymer–fullerene blends is expressed by the limited exciton...

متن کامل

Ultrafast charge transfer in solid-state films of pristine cyanine borate and blends with fullerene

Photoinduced electron transfer in light-absorbing materials is the first step towards charge separation and extraction in small molecule-based organic solar cells. The excited state dynamics of the cyanine dye cation Cy3 paired with a tetraphenylborate counter-anion (Cy3-B) was studied in pristine solid-state films of the dye and in blends with the electron acceptor material PCBM. Here we show ...

متن کامل

On the energetic dependence of charge separation in low-band-gap polymer/fullerene blends.

The energetic driving force required to drive charge separation across donor/acceptor heterojunctions is a key consideration for organic optoelectronic devices. Herein we report a series of transient absorption and photocurrent experiments as a function of excitation wavelength and temperature for two low-band-gap polymer/fullerene blends to study the mechanism of charge separation at the donor...

متن کامل

Exciton formation, relaxation, and decay in PCDTBT.

The nature and time evolution of the primary excitations in the pristine conjugated polymer, PCDTBT, are investigated by femtosecond-resolved fluorescence up-conversion spectroscopy. The extensive study includes data from PCDTBT thin film and from PCDTBT in chlorobenzene solution, compares the fluorescence dynamics for several excitation and emission wavelengths, and is complemented by polariza...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2012