PBDB-T-2Cl (PCE14)

Order Code: M2134A1
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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 £299.00
M2134A1 250 mg £598.00
M2134A1 500 mg £1020.00
M2134A1 1 g £1800.00
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 77,337 34,151 2.26 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, PM7
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. Although fluorine has greater electronegativity, it is believed that electron density can be delocalised more effectively to the chlorine atom than the fluorine atom on the BDT (benzodithiophene) backbone unit, resulting in a deeper HOMO energy level.

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.

To the best of our knowledge the technical information provided here is accurate. However, Ossila assume no liability for the accuracy of this information. The values provided here are typical at the time of manufacture and may vary over time and from batch to batch.