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Product Code M2230A3-100mg
Price $350 ex. VAT

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PFN-Br, used to improve extraction efficiencies in organic electronic devices

High quality polymer available for fast, secure dispatch

With hydrophobic backbone and hydrophilic side chains, PFN-Br is a conjugated polymer electrolyte (CPE). It serves as an electron-interface layer material in organic electronic devices (including OFET, OLED, OPV and perovskite solar cells) to improve the interfacial properties such as extraction efficiency.

PFN-Br interfacial layer embedded in OPV devices gives overall enhanced open-circuit voltage, short-circuit current density and fill factor thus improved device performance. It is also believed that the device performance of polymer LEDs with bilayer cathodes (e.g. PFN-Br/Al), can be enhanced to levels comparable to (and even higher than) those obtained from using Ca or Ba cathodes due to its strong polar ionic pendant groups.

Cathode interlayer molecule

Cathode interlayer molecule

For high efficient OPV applications

Improve extraction efficiency

Improve extraction efficiency

as a conjugated polyelectrolyte

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enhance the device performance of polymer LEDs

Enhance device performance

strong polar ionic pendant groups

PFN-Br has been used in highly efficient OPV tandem structures with device efficiency over 17%.

General Information

Full name Poly(9,9-bis(3’-(N,N-dimethyl)-N-ethylammoinium-propyl-2,7-fluorene)-alt-2,7-(9,9-dioctylfluorene))dibromide
  • PFN-bromide
  • PFNBr
Chemical formula (C56H80N2Br2)n 
CAS number 889672-99-5
Classification/Family Conjugated polymers, Polymer electrolyte, Polyfluorenes, Electron interface layer materials, OLED, OPV, Perovskite materials

Chemical Structure

pfn-br, pfnbr structure
Chemical structure of PFN-Br, CAS#  889672-99-5.

MSDS Documentation


Batch information

Batch Mw Mn PDI Stock info
M2230A1 165 kDa 57 kDa 2.9 Discontinued
M2230A2 190 kDa 61 kDa 3.1 Discontinued
M2230A3 84 kDa 40 kDa 2.1 In Stock
M2230A4 131 kDa 42 kDa 3.1 In Stock


Batch Quantity Price
M2230A 100 mg £280
M2230A 250 mg £560
M2230A 500 mg £950

Literature and References

  1. Efficient Electron Injection from a Bilayer Cathode Consisting of Aluminum and Alcohol-/Water-Soluble Conjugated Polymers, H. Wu et al., Adv. Mater., 16, 1826–1830 (2004), DOI: 10.1002/adma.200400067.
  2. High-Performance Polymer Solar Cells Based on a Wide Bandgap Polymer Containing Pyrrolo[3,4- f]benzotriazole5,7-dione with a Power Conversion Efficiency of 8.63%, L. Lan et al., Adv. Sci., 3, 1600032 (2016); DOI: 10.1002/advs.201600032.
  3. Toward high performance inverted polymer solar cells, X. Gong et al., Polymer 53, 5437e5448 (2012); DOI: 10.1016/j.polymer.2012.09.023.
  4. ZnO:Polymer Composite Material to Eliminate Kink in J-V Curves of Inverted Polymer Solar Cells, T. Jin et al., ECS Sol. Stat. Lett., 3 (3) Q9-Q12 (2014); DOI: 10.1149/2.006403ssl.
  5. Organic and solution-processed tandem solar cells with 17.3% efficiency, L. Meng et al., Science 361 (6407), 1094-1098 (2018); DOI: 10.1126/science.aat2612.
  6. Interfacial Modification in Organic and Perovskite Solar Cells, S. Bi et al., Adv. Mater., 1805708 (2018); DOI: 10.1002/adma.201805708.

To the best of our knowledge the information provided here is accurate. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only.

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