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Product Code M581-1g
Price £300 ex. VAT

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
  • 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.

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);
  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.
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