PFO Polyfluorene (also called F8)

Order Code: M161
MSDS sheet


(excluding Taxes)


Poly(9,9-di-n-octylfluorenyl-2,7-diyl) otherwise known as F8 or PFO.

A high purity polyfluorene specifically optimised for a variety of organic electronic applications.



F8, PF8 chemical structure
Full name Poly(9,9-di-n-octylfluorenyl-2,7-diyl)
CAS number 19456-48-5
Batch number 341-94h
Mw 114,054 g/mol
PDI 3.00823
Recommended solvents Toluene, xylene, chlorobenzene


F8 distribution plot

F8 Poly-fluorene molecular weight (Mw) distribution of by GPC


For a high efficiency green OLED we recommend blending F8 with F8BT with the below specifications. This ink can then be applied either in air or in a glovebox with little difference in performance provided exposure time and light levels are minimised. For more details see our fabrication guide.

At typical concentrations of 10 mg/ml 100 mg of F8 (PFO) will make around 200 devices on Ossila's standard ITO substrates (20 x 15 mm) assuming 50% solution usage (50% loss in filtering and preparation).

OLED reference device:
  • F8 with F8BT
  • Blend ratio of 19:1 (F8:F8BT) in Toluene
  • Total concentration of 10 mg/ml
  • 0.45 μm PTFE filter
  • Spun at 2000 rpm (approx. 70 nm thickness)

Pipetting 20 μl of the above solutions onto a substrate spinning at 2000 rpm should provide a good even coverage with approximately 70 nm thickness. The substrate needs to be spun until dry, which is typically only a few seconds — 15 seconds should be ample to achieve this. Thermal annealing should be undertaken at 80°C for 10 minutes prior to cathode deposition.


Typical device architectures and performance

A basic but efficient OLED can be made using PEDOT:PSS as a hole transport layer and Calcium/Aluminium as the electron contact. When used with the Ossila ITO substrates and shadow masks this produces an easy to fabricate yet efficient >100 cd/m2) device.

Poly-fluorene based OLED architecture based on F8 blended with F8BT


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.