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Pentacene

pentacene chemical structure
Product Code M581
Price $338.00 ex. VAT
$ USD

Pentacene, p-type semiconductor in OFETs

Paired with C60 to be used in devices for LED applications

Pentacene, an acene with flat-like molecules made of five linearly-fused benzene rings, has been extensively studied as a p-type semiconductor in organic field-effect transistors. It is known to exhibit large carrier mobilities of about 1 cm2 /V s within the plane parallel to the substrate.

Due to its large carrier mobilities, pentacene has also been used with C60 in heterojunction solar cells with a power conversion efficiency over 2.7% [1, 2, 4, 5] and made into devices for light-emitting diode applications [3, 6]

General Information

CAS number 135-48-8
Chemical formula C22H14
Molecular weight 278.35 g/mol
Absorption* λmax = 576 nm (in benzene) [11]
Fluorescence λem = 578 nm (in benzene)
HOMO/LUMO HOMO -4.9 eV, LUMO -3.0 eV
Synonyms
  • Benzo[b]naphthacene
  • 2,3:6,7-Dibenzanthracene
Classification / Family Acene derivatives, Hole-injection layer materials, Hole transport layer materials, Phosphorescent host materials, Photovoltaic materials, Sublimed materials, Light-emitting diodes, Light emitting field-effect transistors (LEFETs), OFETs, OPVs, Organic electronics

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

Product Details

Purity >99% (sublimed)
Melting point 372-374 °C (subl.)
Colour purple-black crystals/powder
Solvents Pentacene is insoluble in most of the organic solvents. Trichlorobenzene is normally used to form solution at 60 - 120 °C [10]

* Sublimation is a technique used to obtain ultra pure-grade chemicals, see sublimed materials for OLED devices.

Chemical Structure

Pentacene structure
Chemical Structure of Pentacene

Device Structure(s)

Device structure ITO/Pentacene (45 nm)/C60 (50 nm)/BCP (10 nm)/Al [1]
Jsc (mA cm-2) 15±3
Voc (V) 0.363±0.03
FF (%) 50±1
PCE (%) 2.7±0.4
Device structure ITO/pentacene:CuPc (4:96 wt%, 20 nm)/C60 (60 nm)/BCP (8 nm)/Al (80 nm) [2]
Jsc (mA cm-2) 12.93
Voc (V) 0.52
FF (%) 46
PCE (%) 3.06
Device structure ITO/PEDOT:PSS/pentacene (10 nm)/Alq3 (30 nm)/Al [3]
Colour Green green light emitting device
Max. EQE n/a
Max. Current Efficiency 8.2 cd/A

MSDS Documentation

Pentacene MSDSPentacene MSDS sheet

Literature and Reviews

  1. Efficient thin-film organic solar cells based on pentacene/C60 heterojunctions, S. Yoo et al., Appl. Phys. Lett. 85, 5427 (2004); doi: 10.1063/1.1829777.
  2. Improving efficiency of organic photovoltaic cells with pentacene-doped CuPc layer, W.-B. Chen et al., Appl. Phys. Lett. 91, 191109 (2007); http://dx.doi.org/10.1063/1.2806195.
  3. Improved performance of organic light emitting diodes by pentacene as hole transporting layer, F. Zhang et al., Appl. Surf. Sci., 255, 1942–1945 (2008), doi:10.1016/j.apsusc.2008.06.166.
  4. Efficient organic photovoltaic diodes based on doped pentacene, J. H. Schön et al., Nature 403, 408-410 (2000). doi:10.1038/35000172.
  5. External Quantum Efficiency Above 100% in a Singlet-Exciton-Fission–Based Organic Photovoltaic Cell, D. N. Congreve et al., Science 340 (6130) 334-337 (2013). DOI: 10.1126/science.1232994.
  6. A pentacene-doped hole injection layer for organic light-emitting diodes, S. Shi et al., Semicond. Sci. Technol. 20, 1213-1216 (2005). http://iopscience.iop.org/0268-1242/20/12/012.
  7. Light emitting field-effect transistors with vertical heterojunctions based on pentacene and tris-(8-hydroxyquinolinato) aluminum, S. Cui et al., Org. Electronics, 22, 51-55 (2015). doi:10.1016/j.orgel.2015.03.029.
  8. Ambipolar pentacene/C60-based field-effect transistors with high hole and electron mobilities in ambient atmosphere, H. Yan et al., Appl. Phys. Lett. 94, 023305 (2009); http://dx.doi.org/10.1063/1.3072608 
  9. Low-Voltage, High-Mobility Pentacene Transistors with Solution-Processed High Dielectric Constant Insulators, C. D. Dimitrakopoulos et al., Adv. Mater., 11 (16), 1372-1375 (1999). DOI: 10.1002/(SICI)1521-4095(199911)11:16<1372::AID-ADMA1372>3.0.CO;2-V.
  10. Direct Formation of Pentacene Thin Films by Solution Process, T. Minakata et al., Synth. Metals 153, 1–4 (2005).doi:10.1016/j.synthmet.2005.07.210.
  11. Electronic Absorption and Fluorescence of Phenylethynyl- Substituted Acenes, D. R. Maulding et al., J. Org. Chem., 34 (6), 1734–1736 (1969);DOI: 10.1021/jo01258a045.

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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