FREE shipping to on qualifying orders when you spend or more, processed by Ossila BV. All prices ex. VAT. Qualifying orders ship free worldwide! Fast, secure, and backed by the Ossila guarantee. It looks like you are visiting from , click to shop in or change country. Orders to the EU are processed by our EU subsidiary.

It looks like you are using an unsupported browser. You can still place orders by emailing us on, but you may experience issues browsing our website. Please consider upgrading to a modern browser for better security and an improved browsing experience.

Formamidinium Bromide (FABr)

CAS Number 146958-06-7

Materials, Perovskite Materials, Perovskite Precursor Materials

Product Code M561-5g
Price £180 ex. VAT

Formamidinium bromide, perovskite precursor material for FAPbBr3

Fast and free worldwide shipping available for qualifying orders

Overview | Specifications | MSDS | Pricing and Options  | Literature and Reviews | Resources and Support

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.

Resources and Support

Perovskite Solar Cells: Methods of Increasing Stability & Durability

This article follows up on a previous article - Perovskite Solar Cells: Causes of Degradation, and aims to introduce some methods that have been adapted to improve perovskite solar cell stability.One of the main causes of perovskite instability is the hydroscopic nature of the organic cations, especially methylammonium.

Learn more...
Return to the top