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Product Code M0981A1-250mg
Price £289.00 ex. VAT

Poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine) (TFB) is a triarylamine based semiconductor with a band gap of 3 eV (HOMO and LUMO levels of 5.3 and 2.3 eV, respectively) and a relatively high hole mobility of 2 ×10-3 cm2 V-1 s-1.

TFB from Ossila was used in the high-impact paper (IF 38.77), Rational molecular passivation for high-performance perovskite light-emitting diodes, W. Xu et al., Nat. Photonics, 13, 418–424 (2019); DOI: 10.1038/s41566-019-0390-x.

Due to its low ionisation potential and high hole mobility, TFB serves primarily as hole transport layer (HTL), hole-injection layer (HIL) and electron-blocking layer (EBL) material in organic electronic devices. When built into device as an interface material, TFB as an electron blocking layer will not only reduce the chance of electron leakage, but also reduce the possibility of exciton quenching between the interface of the active layer and charge transport layer (F8BT/MoOx for example).

General Information

CAS number 220797-16-0
Chemical formula (C51H61N)n
Absorption* λmax 390 nm (in THF)
Fluorescence λem 295 nm, 435 nm (in THF)
HOMO/LUMO HOMO = 5.3 eV, LUMO = 2.3 eV
Solvents THF, Toluene and Chloroform
Synonyms Poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine)
Classification / Family Hole transport material (HTL), Hole injection material (HIL), Electron blocking material (EBL), OLEDs, Perovskite solar cells, Organic and printed electronics

* Measurable with an optical spectrometer, see our spectrometer application notes.

Product Details

Purity >99%
Melting point n.a.
Colour Pale yellow powder/fibers

Chemical Structure

Poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine) (TFB) structure
Chemical Structure of Poly(9,9-dioctylfluorene-alt-N-(4-sec-butylphenyl)-diphenylamine) (TFB)

Device Structure(s)

Device structure ITO (120 nm)/PDOT:PSS(50 nm)/TFB (5 nm)/PYGTPA* (75 nm)/PEGPF* (10 nm)/Ca (10 nm)/Al (100 nm) [1]
Colour Deep blue dellp blue
Max. luminance 9,242 cd/m2
Max. Current Efficiency 0.85 cd/A
Bias 4.3 V
Device structure

ITO/c-ZnO (50 nm)/F8BT (80 nm)/MoO3 (10 nm)/Au (50 nm) [2]

ITO/c-ZnO (50 nm)/F8BT (80 nm)/TFB (60 nm)/MoO3 (10 nm)/Au (50 nm) [2]

Colour Green green Green green
Max. luminance     9,370 cd/m2 16,460 cd/m2
Max. Current Efficiency 0.34 cd/A 0.93 cd/A
Bias ~ 0.60 V ~ 0.87 V
Device structure

ITO/ZnO/CsPbI3/TFB (60 nm)/MoO3 (5 nm)/Ag (80 nm) [3]

Colour Red red
Max. Luminance 206 cd/m2
Max. EQE 5.7%

*For chemical structure informations please refer to the cited references


Batch Quantity Price
M0981A 250 mg £289.00
M0981A 500 mg £511.00
M0981A 1 g £909.00

Batch details

Batch number MW Mn PDI Stock Info
M981 31,206 17,468 1.79 Discontinued
M982 68,000 27,200 2.50 Discontinued
M983 45,000 25,000 1.8 Discontinued
M0981A1 42,000 16,800 2.5 In Stock

Literature and Reviews

  1. All-solution-processed multilayer polymer/dendrimer light emitting diodes, M. Auer-Berger et al., Org. Electronics, 35, 164-170 (2016);
  2. High Efficiency Composite Metal Oxide-Polymer Electroluminescent Devices: A Morphological and Material Based Investigation, D. Kabra et al., Adv. Mater., 20, 3447–3452 (2008); DOI: 10.1002/adma.200800202.
  3. Highly Efficient Perovskite Nanocrystal Light-Emitting Diodes Enabled by a Universal Crosslinking Method, G. Li et al., adv. Mater., 28, 3528–3534 (2016); DOI: 10.1002/adma.201600064.
  4. A polymer blend approach to fabricating the hole transport layer for polymer light-emitting diodes, H. Yan et al., Appl. Phys. Lett., 84, 3873 (2004); doi: 10.1063/1.1737791.
  5. Spin-cast thin semiconducting polymer interlayer for improving device efficiency of polymer light-emitting diodes, J-S. Kim et al., Appl. Phys. Lett., 87, 023506 (2005); doi: 10.1063/1.1992658.

To the best of our knowledge the information provided here is accurate. However, Ossila assume no liability for the accuracy of this page. The values provided are typical at the time of manufacture and may vary over time and from batch to batch. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, pharmaceuticals, cosmetics, food or commercial applications.

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