Table 1 Polymerization resultsa and electronic properties of the polymers.

From: Highly Efficient and Stable Solar Cells Based on Thiazolothiazole and Naphthobisthiadiazole Copolymers

Polymer

Mn (kDa)

Mw (kDa)

PDI

EHOMO (eV)

ELUMO (eV)b

λmax (nm)

λedge (nm)/Egopt (eV)d

CVb

PESAc

PTzNTz-EHBO

32.7

64.3

2.0

−5.41

−5.28

−3.45

490, 643, 677

784/1.58

PTzNTz-EHHD

47.0

91.8

2.0

−5.40

−5.28

−3.46

487, 633, 675

787/1.58

PTzNTz-BOBO

51.6

113.2

2.2

−5.40

−5.30

−3.46

482, 678

791/1.57

PTzNTz-BOHD

29.1

59.2

2.2

−5.41

−5.29

−3.44

477, 680,

788/1.57

  1. aDetermined by high temperature GPC (DCB, 140 °C) using polystyrene standard.
  2. bHOMO and LUMO energy levels determined by cyclic voltammetry.
  3. cHOMO energy levels evaluated by photoelectron spectroscopy in air (PESA).
  4. dλedge: absorption edge, Eg: optical band gap.
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