From: Imaging of polymer:fullerene bulk-heterojunctions in a scanning electron microscope: methodology aspects and nanomorphology by correlative SEM and STEM
Chemical formulae
Density (g/cm3)
Mean atomic number (Zm)
Mean atomic mass (Am)
PTB7
C41H53FS4O4
1.12 ± 0.05
5.30
7.35
PC71BM
C82H14O2
1.36 ± 0.05
5.62
10.52