%0 Journal Article
%A Jiang, Xinyu
%A Kim, Hongwon
%A Deimel, Peter S.
%A Chen, Wei
%A Cao, Wei
%A Yang, Dan
%A Yin, Shanshan
%A Schaffrinna, Roy
%A Allegretti, Francesco
%A Barth, Johannes V.
%A Schwager, Martina
%A Tang, Haodong
%A Wang, Kai
%A Schwartzkopf, Matthias
%A Roth, Stephan V.
%A Müller-Buschbaum, Peter
%T Internal nanoscale architecture and charge carrier dynamics of wide bandgap non-fullerene bulk heterojunction active layers in organic solar cells
%J Journal of materials chemistry / A
%V 8
%N 44
%@ 2050-7496
%C London ˜[u.a.]œ
%I RSC
%M PUBDB-2021-00367
%P 23628 - 23636
%D 2020
%Z Waiting for fulltext
%X Bulk heterojunction (BHJ) organic solar cells have gained increasing attention in the past few years. In this work, active layers of a wide-bandgap polymer donor with benzodithiophene units PBDB-T-2F and a non-fullerene small molecule acceptor IT-M are assembled into photovoltaic devices with different amounts of solvent additive 1,8-diiodooctane (DIO). The influence of DIO on the nanoscale film morphology and crystalline structure as well as the charge carrier dynamics of the active layers are investigated by combining grazing-incidence small-angle X-ray scattering (GISAXS), grazing-incidence wide-angle X-ray scattering (GIWAXS), X-ray reflectivity (XRR), UV-visible (UV-vis) absorption spectroscopy, X-ray photoelectron spectroscopy (XPS), time-resolved photoluminescence (TRPL) and space charge limited current measurements, which are correlated with the corresponding performance of the solar cells. At 0.5 vol
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000590158400044
%R 10.1039/D0TA09671G
%U https://bib-pubdb1.desy.de/record/454010