Spiro-OMeTAD (also called Spiro-MeOTAD)

Order Code: M291
MSDS sheet


(excluding Taxes)



 Grade Order Code Quantity Price
Unsublimed (>99.5% purity) M291 500 mg £163
Sublimed (>99.5% purity) M292 500 mg £227
Unsublimed (>99.5% purity) M291 1 g £237
Sublimed (>99.5% purity) M292 1 g £363


High-purity Spiro-OMeTAD (also called Spiro-MeOTAD) for perovskite and OLED hole interfaces.

In stock now for immediate dispatch to institutions worldwide.




Spiro-OMeTAD chemical structure
Spiro-OMeTAD chemical structure


Full name 2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene
  • Spiro-OMeTAD
  • Spiro-MeOTAD
CAS number 207739-72-8
Molecular formula C81H68N4O8
Mw 1225.43 g/mol
Appearance Light yellow powder
Available grades

Unsublimed >99.5% (HPLC) (M291)

Sublimed >99.5% (HPLC) (M292)

Melting point 240°C (approx.)
TGA >360°C (0.5% weight loss)
UV absorption max 306, 385 nm (in CH2Cl2)
PL max 429 nm (in CH2Cl2)
HOMO / LUMO HOMO = -5.0 eV (by cyclic voltammetry)      LUMO = -2.05 eV (HOMO - Eg)
Eg (optical) 2.95 eV


Spiro-OMeTAD Batch Specific Data

Spiro-OMeTAD HPLC trace
HPLC trace and 1H-NMR spectrum for Spiro-OMeTAD with > 99.5% purity.


Key References

[1] Interface engineering of highly efficient perovskite solar cells. Huanping Zhou et al., Science, V 34, p.546 (2014).

Key details: High efficiency perovskite solar cells with >19% efficiency. Doping regime specified via reference [2].

[2] Sequential deposition as a route to high-performance perovskite-sensitized solar cells. Julian Burschka et al., Nature, V499 p.316 (2013).

Key details: Spin coated spiro-MeOTAD in chlorobenzene doped with the below compounds (doping ratio's specified in reference [3]:

[3] Nanostructured TiO2 /CH3NH3PbI3 heterojunction solar cells employing spiro-OMeTAD/Co-complex as hole-transporting material. Jun Hong Noh et al., J. Mater. Chem. A, 1, 11842-11847, DOI: 10.1039/C3TA12681A (2013)

Key details: Doped with the below concentrations

  • 50 mM spiro-OMeTAD in chlorobenzene
  • Co( III )-complex (FK209) first dissolved into an acetonitrile stock solution prepared with concentrations in the range 4 to 33 mM before being added to the Spiro/chlorobenzene solution.
  • FK209 stock solution mixed with Spiro/chlorobenzene solution to give overall 7.7 mol% FK209 to Spiro.
  • Also doped with a stock solution of Li-bis(trifluoromethanesulfonyl)imide (Li-TFSI) at 170 mg and TBP at 46.6% by volume in acetonitrile.
  • Spin-coated at 3000 rpm for 30s.


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.