Influence of solvent and solvent additive on the morphology of PTB7 films probed via X-ray scattering

The Journal of Physical Chemistry. B
S GuoPeter Müller-Buschbaum

Abstract

Films of the semiconducting polymer 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]] with 40% fluorinated monomers, denoted PTB7-F40, are spin coated out of different solvents onto PEDOT:PSS films. The influence of the used solvents chlorobenzene, 1,2-dichlorobenzene, and 1,2,4-trichlorobenzene as well as the influence of the additive 1,8-diiodooctane (DIO) is probed with grazing incidence small- and wide-angle X-ray scattering (GISAXS and GIWAXS). As seen with GISAXS, without DIO, the films are homogeneous and show roughness correlation with the PEDOT:PSS film surface. With DIO, an inner film structure with a size of 50-75 nm is found and the roughness correlations weaken. In addition, as seen in GIWAXS, the crystalline part of the films is influenced by the used solvent if DIO is added.

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Aug 15, 2013·ACS Applied Materials & Interfaces·Shuai GuoPeter Müller-Buschbaum

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Citations

Jun 3, 2016·ACS Applied Materials & Interfaces·Yifan ZhengAndré D Taylor
Nov 1, 2016·ACS Applied Materials & Interfaces·Yen-Sook JungDong-Yu Kim
Jan 12, 2017·ACS Applied Materials & Interfaces·Shuai GuoPeter Müller-Buschbaum
Aug 9, 2016·Scientific Reports·John D RoehlingAdam J Moulé
Jun 15, 2018·Advanced Materials·Caitlin McDowellGuillermo C Bazan
Feb 14, 2019·Chemistry, an Asian Journal·Tanwistha GhoshVijayakumar C Nair
Feb 5, 2015·ACS Applied Materials & Interfaces·Taehoon KimChong Rae Park
Jan 25, 2019·ACS Applied Materials & Interfaces·Seo-Jin KoJin Young Kim
May 5, 2018·ACS Applied Materials & Interfaces·Jae Won JeongMincheol Chang

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