Fig. 3: Investigation of polymer order by UV‒vis absorption spectroscopy and GIXD measurement. | Communications Materials

Fig. 3: Investigation of polymer order by UV‒vis absorption spectroscopy and GIXD measurement.

From: Ordered π-conjugated polymer backbone in amorphous blend for high efficiency nonfullerene organic photovoltaics

Fig. 3

UV−vis absorption spectra of a–c PSTz1 and e–g PSTz2. a,e Absorption spectra in chlorobenzene (CB) solution, neat film, and polystyrene (PS) blend film where the polymer to PS weight ratio is 1:5. b,f Absorption spectra in solutions of CB and methanol with different CB:methanol ratios. c,g Temperature-dependent absorption spectra in CB solution measured at 20–100 °C. Two-dimensional grazing-incidence wide-angle X-ray diffraction (2D GIXD) patterns of d PSTz1 and h PSTz2 in the neat films.

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