Formamidinium bromide (FABr), is used mainly as a perovskite precusor material for FAPbBr₃ or a range of formamidinium lead bromide-iodide mixed halide perovskites (FAPbI_yBr_3-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

Purity	98% >99.5% (further purified by double recrystalisation from 98% grade in ethanol)
Melting point	133-140 °C
Colour	White powder/crystals

Chemical Structure

Applications

Formamidinium bromide (FABr), is used mainly as a perovskite precusor material for FAPbBr₃ or a range of formamidinium lead bromide-iodide mixed halide perovskites (FAPbI_yBr_3-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 MSDS sheet

Pricing

Grade	Order Code	Quantity	Price
98% purity	M562	10 g	£120.00
98% purity	M562	25 g	£206.00
>99.5% purity	M561	5 g	£139.00
>99.5% purity	M561	10 g	£229.00

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), http://iopscience.iop.org/1347-4065/54/8S1/08KF08.

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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.

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