Methylammonium bromide (MABr, CAS 6876-37-5), also known as methylamine hydrobromide, is a perovskite precursor used to prepare organic-inorganic hybrid perovskites for photovoltaics, light-emitting diodes and field-effect transistors. This M571 grade reaches >99.995% purity, obtained by recrystallising the 99.995% M572 material. It is supplied as white crystals or powder with a melting point of 296 °C.
MABr is the starting material for MAPbBr3 perovskites, which have a band gap of 2.3 eV. Because of this wide gap, MAPbBr3 is used to adjust the band gap of mixed-halide MAPbX3 perovskites, to absorb high-energy photons, and as the front cell in tandem devices. Bromide perovskites can also deliver a higher open-circuit voltage than their iodide counterparts, with pure MAPbBr3 cells reported at a VOC of up to 1.40 V.
In light emission, MAPbBr3 nanoplatelets have shown bright photoluminescence at 529 nm with a narrow band and a quantum yield up to 85%. Ossila MABr has been used in published work on perovskite grain size and solar cell efficiency (Q. Lian et al., ACS Appl. Mater. Interfaces, 2020).
- Synthesis of MAPbBr3 perovskites for perovskite solar cells.
- Band gap tuning of mixed-halide MAPbX3 perovskites using I, Br and/or Cl.
- Wide-gap absorber layers serving as the front cell in tandem solar cells.
- Preparation of MAPbBr3 nanoplatelets for perovskite light-emitting diodes.
- Mixed-cation perovskite devices such as (FAPbI3)0.85(MAPbBr3)0.15 cells.
- Perovskite materials for field-effect transistors.
| Brand | Ossila |
|---|---|
| CAS number | 6876-37-5 |
| Molecular formula | CH6BrN |
| Purity | >99.995% (recrystallised) |
| Category | — |
| Pack sizes | 5 g, 10 g, 25 g |
| Physical form | White crystals/powder |
| Storage | — |
- Product code: M571
- Product code: M571
- Molecular weight: 111.97 g/mol
- Synonyms: MABr, Methylamine hydrobromide
- Melting point: 296 °C
- Classification / Family: Organic photovoltaics, Light-emitting diodes, Perovskite precursor materials
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