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Product Code M2056A3-50mg
Price £260 ex. VAT

PJ71, for high efficiency polymer solar cells applications

High purity polymer available for fast, secure dispatch

Specifications | Pricing and Options | MSDS | Literature and Reviews

PJ71 (CAS number 2035466-89-6), BDTT-FBTA back-boned donor-acceptor type polymer semiconductor, with tripropylsilyl substituents on thiophene groups that are conjugated side chains to the BDTT unit, it further down-shifts the HOMO energy level and thus increases the bandgap of the polymer (Eg = 2.16 eV).

The Si-binding atoms also have a significant effect on the crystallinity of the polymer thus the morphology of the device film due to the longer C–Si bond length compared with the C–C bond, giving the rise of stronger π-π stackings between each polymer chains.

PJ71 is used for high efficiency polymer solar cells applications especially with ITIC series as NFAs.

Luminosyn™ PJ71

Luminosyn™ PJ71 is now available.

High purity
PJ71 is purified by soxhlet extraction with methanol, hexane and chlorobenzene under argon atmosphere

Batch-specific GPC data
Have confidence in what you are ordering; batch-specific GPC data for your thesis or publications

Large quantity orders
Plan your experiments with confidence with polymers from the same batch

General Information

Full name Poly[[5,​6-​difluoro-​2-​(2-​hexyldecyl)​-​2H-​benzotriazole-​4,​7-​diyl]​-​2,​5-​thiophenediyl[4,​8-​bis[5-​(tripropylsilyl)​-​2-​thienyl]​benzo[1,​2-​b:4,​5-​b']​dithiophene-​2,​6-​diyl]​-​2,​5-​thiophenediyl]
Synonyms J71
CAS number 2035466-89-6
Chemical formula (C66H85F2N3S6Si2)n
Molecular weight See Batch Details table below
HOMO / LUMO HOMO = - 5.40 eV, LUMO = - 3.24 eV [1]

Chlorobenzene and dichlorobenzene

Classification / Family Benzodithiophene, BDT, Benzotriazole, Heterocyclic five-membered ring, Organic semiconducting materials, medium band-gap polymers, Organic photovoltaics, All-polymer solar cells, OFETs, Photodetectors

Chemical Structure

PJ71 chemical structure
Chemical structure and product image of PJ71.


Batch Quantity Price
M2056A2/A3 50 mg £260
M2056A2/A3 100 mg £460
M2056A2/A3 250 mg £950
M2056A2/A3 500 mg £1650
M2056A2/A3 1 g £3100
M2056A2/A3 5 g / 10 g* Please enquire

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

Batch Details

Batch Mw Mn PDI Stock Info
M2056A2 138,867 56,178 2.47 Discontinued
M2056A3 111,675 49,815 2.24 In Stock

MSDS Documentation


Literature and Reviews

  1. 11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor, H. Bin et al., Nat. Commun., 7, 13651 (2016); doi:10.1038/ncomms13651.
  2. A near-infrared non-fullerene electron acceptor for high performance polymer solar cells, Y. Li et al., Energy Environ. Sci., 10, 1610 (2017); DOI: 10.1039/c7ee00844a.
  3. Medium Bandgap Polymer Donor Based on Bi(trialkylsilylthienyl-benzo[1,2-b:4,5-b′]-difuran) for High Performance Nonfullerene Polymer Solar Cells, H. Bin et al., Adv. Energy Mater., 1700746 (2017); DOI: 10.1002/aenm.201700746.
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