Methylammonium iodide (MAI), CAS 14965-49-2, is a white crystalline perovskite precursor used to prepare organic-inorganic hybrid perovskites for photovoltaics, light-emitting diodes and field-effect transistors. It is also known as methylamine hydroiodide. Product M271 is the recrystallised grade with >99.9% purity, obtained by recrystallising the 99.9% grade twice from ethanol.
Because recrystallisation strips out trace residual hydroiodic acid (HI) left from synthesis, this grade is less soluble in DMF and DMSO than the standard material, and solar cell efficiency may be lower if no acid is added back. Adding a controlled amount of HI lets researchers dose the acid precisely, improving reproducibility. Between 1% and 10% HI is recommended with this grade; the right amount depends on the precursors, solution concentration, solvent and processing environment, so each lab should tune it. For simpler ink preparation, the 99.9% non-recrystallised grade is the easier choice.
Ossila MAI was used in the published study on strontium insertion in methylammonium lead iodide (D. Pérez-del-Rey et al., Adv. Mater., 28, 9839-9845 (2016)). Reference MAI:PbCl2 devices made with a 3:1 molar ratio ink in DMF reached an average efficiency of 8.89% (9.57% maximum) under non-optimised conditions.
- Synthesis of organic-inorganic hybrid perovskites such as methylammonium lead iodide.
- Fabrication of perovskite photovoltaic (PV) devices and solar cells.
- Preparation of perovskite active layers for light-emitting diodes (LEDs).
- Research on perovskite-based field-effect transistors (FETs).
- Reproducible perovskite ink formulation with precisely controlled hydroiodic acid additions.
| Brand | Ossila |
|---|---|
| CAS number | 14965-49-2 |
| Molecular formula | CH6IN |
| Purity | >99.9% (further purified by double recrystallization from 99.9% grade in ethanol) |
| Category | — |
| Pack sizes | 5 g, 10 g, 25 g |
| Physical form | — |
| Storage | — |
- Product code: M271
- Product code: M271
- Chemical name: Methylammonium iodide
- Synonyms: Methylamine hydroiodide
- Molecular weight: 158.97 g/mol
- Physical appearance: White, crystalline solid
- Recommended solvents (for perovskite synthesis): DMF, DMSO
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