PBDB-T-2Cl (PCE14)

Order Code: M2134A1
Price excludes taxes
Not in stock (price excludes taxes)

PBDB-T-2Cl (also referred to as PCE14) is now available featuring:

  • High purity - PBDB-T-2Cl is purified via Soxhlet extraction with acetone, hexane and chlorobenzene under an argon atmosphere
  • Large quantity orders - so you can plan your experiments with polymer from the same batch


Batch Quantity Price
M2134A1 100 mg £299.1
M2134A1 250 mg £598.2
M2134A1 500 mg £1016.9
M2134A1 1 g £1798.9
M2134A1 5 g / 10 g* Please contact us for details

*for 5 - 10 grams order quantity, the lead time is 4-6 weeks.

Batch details

Batch Mw Mn PDI Stock Info
M2134A1 ≥ 60,000 ≥ 20,000 ≤ 3 In stock

General Information

Full name Poly[(2,6-(4,8-bis(5-(2-ethylhexyl-3-chloro)thiophen-2-yl)-benzo[1,2-b:4,5-b’]dithiophene))-alt-(5,5-(1’,3’-di-2-thienyl-5’,7’-bis(2-ethylhexyl)benzo[1’,2’-c:4’,5’-c’]dithiophene-4,8-dione)]
Synonyms PCE14, PBDB-T-Cl
Chemical formula (C68H76Cl2O2S8)n
CAS number 2239295-71-5
HOMO / LUMO HOMO = -5.52 eV, LUMO = -3.57 eV [1]
Solubility Chloroform, chlorobenzene and dichlorobenzene 
Classification / Family Organic semiconducting materials, Medium bandgap polymers, Organic photovoltaics, Polymer solar cells, Perovskite solar cells, Hole-transport layer materials, NF-PSCs, All-polymer solar cells (all-PSCs).
chemical structure of PBDB-T-2Cl
Chemical structure of PBDB-T-2Cl (PCE14); CAS No. 2239295-71-5.



PBDB-T-2Cl is part of the PBDB-T polymer family. It has a high OPV device performance, with reported efficiencies exceeding 12%. PSCs based on PBDB-T-2Cl as the donor and ITIC-2F as the acceptor have achieved a power conversion efficiency (PCE) of over 14% [2].

Compared to PBDB-T-2F, PBDB-T-2Cl showed slightly lower calculated HOMO levels. This demonstrated that on the BDT (benzodithiophene) backbone unit, chlorine has an even stronger electron-withdrawing ability than fluorine.

Although fluorine has greater electron negativity, it is believed that electron density can be delocalised more effectively to the halogen atom in Th-Cl than in Th-F. Hence, a deeper HOMO energy level is produced.

Usage Details

The device structure of the certified device was:

ITO / ZnO (30 nm) / PBDB-T-2Cl:ITIC-2F (100 nm) / MoO3 (10 nm) / Al (100 nm)

PBDB-T:ITIC-2F solution details:

  • Blend ratio: 1:1
  • Concentration: 20 mg/ml
  • Solvent: Chlorobenzene
  • Additive: 1% 1,8-Diiodooctane


Literature and Reviews

  1. Chlorine substituted 2D-conjugated polymer for high-performance polymer solar cells with 13.1% efficiency via toluene processing, Q. Fan et al., Nano Energy 48, 413–420 (2018); doi: 10.1016/j.nanoen.2018.04.002.
  2. Over 14% Efficiency in Polymer Solar Cells Enabled by a Chlorinated Polymer Donor, S. Zhang et al., Adv. Mater., 30, 1800868 (2018); DOI: 10.1002/adma.201800868.
  3. Fluorination vs. chlorination: a case study on high performance organic photovoltaic materials, Y. Zhang et al., Sci. China Chem., 61 (10), 1328–1337 (2018); doi: 10.1007/s11426-018-9260-2.