The impact of driving force on electron transfer rates in photovoltaic donor-acceptor blends
MetadataShow full item record
The effect of acceptor energy level on electron transfer rate in blends of the polymer solar cell material poly[[4,8-bis[(2-ethylhexyl)oxy]benzo[1,2-b:4,5-b′]dithiophene-2,6-diyl][3-fluoro-2-[(2-ethylhexyl)carbonyl]thieno[3,4-b]thiophenediyl]] (PTB7) is studied using time-resolved fluorescence. Fast electron transfer in <2 ps is observed for driving force between 0.2 and 0.6 eV and slower electron transfer outside this range. This dependence is described by Marcus theory with a reorganization energy of ≈0.4 eV.
Ward , A J , Ruseckas , A , Kareem , M M , Ebenhoch , B , Serrano , L A , Al-Eid , M , Fitzpatrick , B , Rotello , V M , Cooke , G & Samuel , I D W 2015 , ' The impact of driving force on electron transfer rates in photovoltaic donor-acceptor blends ' , Advanced Materials , vol. 27 , no. 15 , pp. 2496–2500 . https://doi.org/10.1002/adma.201405623
© 2015 The Authors. Published by WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim. This is an open access article under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits use, distribution and reproduction in any medium, provided the original work is properly cited.