Spiro-OMeTAD (Spiro-MeOTAD)
CAS Number 207739-72-8
DSSC Dyes & Electrolytes, Electron / Hole Transport Layer Materials, High Purity Sublimed Materials, Materials, Perovskite Interface Materials, Perovskite Materials, Semiconducting Molecules
Spiro-OMeTAD, high performance HTL material
High-purity (>99%) and available online for priority dispatch
Spiro-OMeTAD (or Spiro-MeOTAD) is one of the most studied and suitable hole transport layer materials (HTL) due to its facile implementation and high performance in organic-inorganic electronic devices. The spiro-linked molecule provides high glass transition temperature (Tg), morphological stability and easy processability while maintaining good electronic properties. Spiro-MeOTAD has been widely used in solid-state dye-sensitised solar cells (ssDSSC), organic light-emitting diodes (OLED), perovskite solar cells (PSCs) and polymer based organic solar cells (OSCs).
Spiro-OMeTAD (Spiro-MeOTAD) from Ossila was used in the high-impact paper (IF 29.37), Interfacing Pristine C60 onto TiO2 for Viable Flexibility in Perovskite Solar Cells by a Low-Temperature All-Solution Process, Y. Zhou et al., Adv. Energy Mater., 1800399 (2018); DOI: 10.1002/aenm.201800399.
High-purity Spiro-OMeTAD (Spiro-MeOTAD) is in stock now for immediate dispatch to institutions worldwide. Please contact us for bulk orders over 100 g.
General Information
CAS Number | 207739-72-8 |
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Molecular Formula | C81H68N4O8 |
Full Name | 2,2',7,7'-Tetrakis[N,N-di(4-methoxyphenyl)amino]-9,9'-spirobifluorene |
Synonyms |
Spiro-OMeTAD Spiro-MeOTAD |
Mw | 1225.43 g/mol |
UV Absorption Max | 306 nm, 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 |
Product Details
Purity |
Sublimed: >99.5% (HPLC) Unsublimed: >99.0% (HPLC) |
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Melting Point | 240 °C (approx.) |
TGA | >360 °C (0.5% weight loss) |
Appearance | White to pale yellow powder |
*Sublimation is a technique used to obtain ultra pure-grade chemicals. For more details about sublimation, please refer to the Sublimed Materials .
Characterisation
Pricing
Grade | Order Code | Quantity | Price |
---|---|---|---|
Unsublimed (>99.0% purity) | M291 | 500 mg | £210 |
Sublimed (>99.5% purity) | M292 | 500 mg | £300 |
Unsublimed (>99.0% purity) | M291 | 1 g | £350 |
Sublimed (>99.5% purity) | M292 | 1 g | £480 |
Sublimed (>99.5% purity) | M292 | 5 g | £2100 |
Sublimed (>99.5% purity) | M292 | 10 g | £4000 |
Unsublimed (>99.0% purity) | M291 | 10 g | £2500 |
References
- Interface engineering of highly efficient perovskite solar cells, Huanping Zhou et al., Science, V 34, p.546 (2014).
- Sequential deposition as a route to high-performance perovskite-sensitized solar cells, Julian Burschka et al., Nature, V499 p.316 (2013).
- 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 from references
- [1]: High efficiency perovskite solar cells with >19% efficiency. Doping regime specified via reference [2].
- [2]: Spin coated spiro-MeOTAD in chlorobenzene doped with the below compounds doping ratio's specified in reference [3]:
- 4-tert-butylpyridine
- lithium bis(trifluoromethylsul-phonyl)imide (LiTFSI)
- tris(2-(1H-pyrazol-1-yl)-4-tert-butylpyridine)cobalt(III) bis(tri-fluoromethylsulphonyl)imide
- [3]: 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-OMeTAD
- 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 30 s
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