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Formamidinium Bromide (FABr)

Perovskite Precursors

Product Code M561-5g
Price $225 ex. VAT

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Formamidinium bromide, perovskite precursor material for FAPbBr3

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Formamidinium bromide (FABr), is used mainly as a perovskite precursor material for FAPbBr3 or a range of formamidinium lead bromide-iodide mixed halide perovskites (FAPbIyBr3-y). FAPbBr3 material, having an energy bandgap of 2.23 eV, makes it an ideal candidate for tandem solar cell applications as well.

General Information

CAS number 146958-06-7
Chemical formula CH5BrN2
Molecular weight 124.97 g/mol
Synonyms FABr, Formamidine hydrobromide
Classification / Family

Perovskite precursor materials, Perovskite solar cells

Light-emitting diodes.

Product Details



>99.5% (further purified by double recrystallisation from 98% grade in ethanol)

Melting point 133-140 °C
Colour White powder/crystals

Chemical Structure

formamidinium bromide, fabr
Chemical structure of formamidinium bromide (FABr), CAS No. 146958-06-7


Formamidinium bromide (FABr), is used mainly as a perovskite precursor material for FAPbBr3 or a range of formamidinium lead bromide-iodide mixed halide perovskites (FAPbIyBr3-y). With a combination of different ratios of halides in the perovskite structure, it is possible to tune the the bandgap of the formamidinium lead trihalide system between 1.55 eV and 2.3 eV. This can enable variation in colour, extending the photoexcited species lifetime, enhancing charge transport through the layer and thus an optimisation for applications in multi-junction solar cells [1, 2]. 

FAPbBr3 material, having an energy bandgap of 2.23 eV [1], makes it an ideal candidate for tandem solar cell applications as well.

Device structure FTO/TiO2/FAPbBr3/Spiro-OMeTAD/Au [1] FTO/TiO2/MAPbBr3/Spiro-OMeTAD/Au [1]
Jsc (mA cm-2) 6.6 0.6
Voc (V) 1.35 1.48
FF (%) 0.73 0.48
PCE (%) 6.5 0.4
Device structure FTO/TiO2/FAPbIBr2/Spiro-OMeTAD/Au [2]
Jsc (mA cm-2) 23.3
Voc (V) 0.94
FF (%) 65
PCE 14.2

MSDS Documentation

Formamidinium bromide MSDSFormamidinium bromide MSDS sheet


Grade Order Code Quantity Price
98% purity M562 10 g £160
98% purity M562 25 g £280
>99.5% purity M561 5 g £180
>99.5% purity M561 10 g £300

Literature and reviews

  1. Efficient Planar Heterojunction Perovskite Solar Cells Based on Formamidinium Lead Bromide, F. C. Hanusch et al., J. Phys. Chem. Lett., 5 (16), 2791–2795 (2014), DOI: 10.1021/jz501237m.
  2. Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells, G. E. Eperon et al., Energy Environ. Sci., 7, 982-988 (2014), DOI: 10.1039/C3EE43822H. 
  3. Compositional engineering of perovskite materials for high-performance solar cells, N. Jeon et al., Nature 517, 476–480 (2015), doi:10.1038/nature14133.
  4. Light stability tests of methylammonium and formamidinium Pb-halide perovskites for solar cell applications, G. Murugadoss et al., Jpn. J. Appl. Phys. 54, 08KF08 (2015),

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. Products may have minor cosmetic differences (e.g. to the branding) compared to the photos on our website. All products are for laboratory and research and development use only, and may not be used for any other purpose including health care, military, pharmaceuticals, cosmetics, food, or commercial applications.

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