Table 1 Optical properties of the polymers

From: A highly crystalline face-on π-conjugated polymer based on alkoxythiophene-flanked benzobisthiazole for organic photovoltaics

Polymer

EHOMO (eV)a

ELUMO (eV)c

λmax (nm)

λedge (nm)

Egopt (eV)d

PDBTz1

−5.64 [−5.28]b

−2.81

515, 557

589

2.11

PDBTz2

−5.47 [−5.01]b

−2.83

536, 580

616

2.01

  1. aEstimated with EHOMO = −4.80 − Eoxonset
  2. bThe EHOMO determined by PYS measurement
  3. cEstimated with ELUMO = −4.80 − Eredonset
  4. dOptical bandgap determined from the absorption onset
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