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Product Code M591
Price £229.00

Together with our ultra pure LiTFSi and sublimed Spiro-MeOTAD, also with higher purity over 98.0%, 4-tert-Butylpyridine is an ideal condidate for your perovskite solar cells research.

General Information

CAS number 3978-81-2
Chemical formula C9H13N
Molecular weight 135.21 g/mol
Synonyms TBP, Pyridine 4-tert-butyl
Classification / Family Pyridine Derivatives, Dye-Sensitised Solar Cells (DSSC), OLEDs, Perovskite HTL Materials, Electrolyte materials.

Product Details

Purity > 98.0%
Boiling point 196-197 °C (lit.)
Density 0.923 g/mL at 25 °C
Colour Light yellow clear liquid


Chemical Structure

chemical structure of 4-tert-butylpyridine
Chemical structure of 4-tert-Butylpyridine, CAS No. 3978-81-2


4-tert-Butylpyridine (TBP) is widely used as additive in electrolytes of dye-sensitised solar cells (DSSC) and in hole transport layer materials (HTL) of polymer photovoltaics and perovskite solar cells.

Despite the high volatility and unpleasant smell, 4-tert-butylpyridine is usually added into HTM to suppress charge-recombination and further improve the properties of HTM and ensure the high efficiency perovskite solar cells. It has been demonstrated that the flexible and facile use of 4-tert-Butylpyridine can improve the crystallinity of perovskite, PCEs of CH3NH3PbI3-based PSCs were improved from 6.71% to 10.62% (i.e., 58% enhancement) [1].

By introduction of Li-TFSI/TBP additives in poly-3-hexylthiophene HTM for CH3NH3PbI3/P3HT perovskite mesoscopic solar cells, great enhancement of the device efficiency from 5.7% to 13.7% was achieved [2].

Device structure                

CH3NH3PbI3-based planar PSCs without TBP* [1]

CH3NH3PbI3-based planar PSCs with TBP [1]

JSC (mA cm-2) 17.12 21.27
VOC (V) 0.92 0.96
FF (%) 43 52
PCE (best) 6.71 10.62
Device structure                

FTO/bl-TiO2/TiO2/CH3NH3PbI3/ P3HT:LiTFSI/Au [2]

FTO/bl-TiO2/TiO2/CH3NH3PbI3/ P3HT:LiTFSI:TBP/Au [2]

JSC (mA cm-2) 15.5 20.1
VOC (V) 0.67 0.92
FF (%) 55 74
PCE (best) 5.7 13.7

*4-tert-Butylpyridine as an additive resulted in orientational and better crystallinity


Characterisation (NMR and HPLC)

4-tert-butylpyridine, TBP, 3978-81-2
HPLC trace of 4-tert-Butylpyridine (TPB; CAS No. 3978-81-2)


1H NMR 4-tert-butylpyridine, tbp
1H NMR of 4-tert-Butylpyridine (TPB) in CDCl3.

Literature and Reviews

  1. Effects of 4-tert-butylpyridine on perovskite formation and performance of solution-processed perovskite solar cells, Y. Shi et al., J. Mater. Chem. A, 3, 22191-22198 (2015). DOI: 10.1039/C5TA05988G.
  2. CH3NH3PbI3/poly-3-hexylthiophen perovskite mesoscopic solar cells: Performance enhancement by Li-assisted hole conduction, J-H. Heo et al., Phys. Status Solidi RRL 8, No. 10, 816–821 (2014). DOI 10.1002/pssr.201409330.
  3. Influence of alkylpyridine additives in electrolyte solution on the performance of dye-sensitized solar cell, H. Kusama et al., Sol. Energy Mater. Sol. Cells, 80, 167–179 (2003). doi:10.1016/j.solmat.2003.08.001.
  4. A dual functional additive for the HTM layer in perovskite solar cells, H. Zhang et al., Chem. Commun., 50, 5020–5022 (2014). DOI: 10.1039/C3CC49458F.

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.