F8T2

Order Code: M501
MSDS sheet

Price

(excluding Taxes)

£149.00


General Information

CAS number 210347-56-1
Chemical formula (C37H44S2)n
Molecular weight  Mw > 50,000, PDI < 3.0
HOMO / LUMO HOMO 5.5 eV      LUMO 3.1 eV [1]
Synonyms

PFOT, Poly(9,9-dioctylfluorene-alt-bithiophene), Poly[(9,9-dioctylfluorenyl-2,7-diyl)-co-bithiophene]

    Classification / Family

    Polyfluorenes, Bithiophenes

    Heterocyclic five-membered ring, Organic semiconducting materials, PLED green emitter materials.

    Organic Photovoltaics, Polymer Solar Cells, Light-emitting Diodes, OFETs materials

    Suggesting Solvents Chloroform, chlorobenzene or dichlorobenzene

     


    Chemical Structure

    f8t2 chemical structure
    Chemical structure of Poly(9,9-dioctylfluorene-alt-bithiophene), F8T2, CAS No. 210347-56-1.

     

    Poly(9,9-dioctylfluorene-alt-bithiophene), also known as F8T2, is a semiconducting material that is widely used in organic electronics such as organic photovoltaics, polymer light-emitting diodes (PLED) and organic field-effect transistors (OFETs). Comparing with poly-3-hexylthiophene, F8T2 has even higher mobilities of 0.1 cm2/V · s and relatively higher stability against chemical doping by environmental oxygen or residual impurities such as  mobile sulphonic acid in the PEDOT/PSS ink. This enables devices with higher on-off current ratios exceeding 105 and with better operating stability than printed poly-3-hexylthiophene devices[1].

    The absorption in the blue region of F8T2 makes it an excellent donor polymer to blend with an acceptor having complementary spectrum or assemble a tandem cell with other low bandgap-conjugated polymers with absorption extended in the red region. 

    Device structure                                            ITO/PEDOT:PSS/TFB/F8T2/Ca  [3]                            
    Color Green  green
    Max. Luminance 23,400
    Max. Current Efficiency 3.68 cd/A
    Max. Power Efficiency 2.9 lm W1  

    *For chemical structure informations please refer to the cited references

    Literature and Reviews

    1. Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend, J-H. Huang et al., Org. Electronics, 10, 27–33 (2009), doi:10.1016/j.orgel.2008.09.007.
    2. High-Efficiency Polymer LEDs with Fast Response Times Fabricated via Selection of Electron-Injecting Conjugated Polyelectrolyte Backbone Structure, M. Suh et al., ACS Appl. Mater. Interfaces, (2015), DOI: 10.1021/acsami.5b07862.
    3. On the use and influence of electron-blocking interlayers in polymer light-emitting diodes, R. Jin et al., Phys. Chem. Chem. Phys., 11, 3455-3462 (2009). DOI: 10.1039/B819200F.
    4. High-Resolution Inkjet Printing of All-Polymer Transistor Circuits, H. Sirringhaus et al., Science, 290 (5499), 2123-2126 (2000), DOI: 10.1126/science.290.5499.2123.
    5. Organic Light-Emitting Diodes Based on Poly(9,9-dioctylfluorene-co-bithiophene) (F8T2), P. Levermore et al., Adv. Funct. Mater., 19, 950–957 (2009); DOI: 10.1002/adfm.200801260.
    6. Mobility enhancement in conjugated polymer field-effect transistors through chain alignment in a liquid-crystalline phase, H. Sirringhaus et al., Appl. Phys. Lett. 77, 406 (2000); http://dx.doi.org/10.1063/1.126991.
    7. Annealing effect of polymer bulk heterojunction solar cells based on polyfluorene and fullerene blend, J-H. Huang et al., Org. Electronics, 10, 27–33 (2009), doi:10.1016/j.orgel.2008.09.007.
    8. Hole mobility effect in the efficiency of bilayer heterojunction polymer/C60 photovoltaic cells, A. Macedo et al., Appl. Phys. Lett. 98, 253501 (2011); http://dx.doi.org/10.1063/1.3601476.