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Product Code M2134A2-100mg
Price £400 ex. VAT

PBDB-T-2Cl, used to achieve efficiencies exceeding 12%

High quality polymer available for fast, secure dispatch

Specifications | Pricing and Options | MSDS | Literature and Reviews

PBDB-T-2Cl (CAS number 2239295-71-5), also known as PM7, 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.

PBDB-T-2Cl (PM7) from Ossila was used in a high-impact paper

PBDB-T-2Cl (PM7) from Ossila was used in the high-impact paper (IF 9.229), Following In Situ the Evolution of Morphology and Optical Properties during Printing of Thin Films for Application in Non-Fullerene Acceptor Based Organic Solar Cells, K. Wienhold et al., ACS Appl. Mater. Interfaces, 12, 36, 40381–40392 (2020); DOI: 10.1021/acsami.0c12390; and paper (IF 29.37), Design Rules for Polymer Blends with High Thermoelectric Performance, O. Zapata-Arteaga et al., Adv. Energy Mater., 12, 2104076 (2022); DOI: 10.1002/aenm.202104076.

Record PCEs of 18.07% was achieved by using mixed PBDB-T-2Cl (PM7) and PBDB-T-2F (PM6) as the donors and mixed non-fullerene Y6 and fullerene PC71BM as the acceptors with the following structure.

Device structure: ITO/PEDOT:PSS/PM6:PM7:Y6:PC71BM/PFNDI-Br/Ag [2]

Thickness (nm) VOC (V) JSC (mA cm-2) FF (%) PCE (%)
120 0.859 26.55 79.23 18.07

Luminosyn™ PBDB-T-2Cl

Luminosyn™ PBDB-T-2Cl (also referred to as PCE14) is now available.

High purity

PBDB-T-2Cl is purified via Soxhlet extraction with acetone, hexane and chlorobenzene under an argon atmosphere

Large quantity orders

Plan your experiments with confidence with polymers from the same batch

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 PM7, 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

Chemical structure of PBDB-T-2Cl
Chemical structure of PBDB-T-2Cl (PCE14)

Device Structure(s)

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


Batch Quantity Price
M2134A 100 mg £400
M2134A 250 mg £800
M2134A 500 mg £1300
M2134A 1 g £2400
M2134A 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 Discontinued
M2134A2 139,135 67,261 2.07 In Stock

MSDS Documentation

PBDB-T-2Cl (PCE14) MSDSPBDB-T-2Cl (PCE14) MSDS sheet

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. Single-layered organic photovoltaics with double cascading charge transport pathways: 18% efficiencies, Nat Commun., 12, 309 (2021); DOI: 10.1038/s41467-020-20580-8.
  3. 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.
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