Cesium iodide, 99.999% trace metals basis – Sigma-Aldrich
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Synonyms
Caesium iodide, Caesium monoiodide
Applications
Cesium iodide can be used as precursor to synthesize lead-free perovskite material, Cs2NaBiI6 (CNBI). The CNBI is highly stable and finds application in the field of solar cells, LEDs, and lasers.
It can be used to prepare brightest red emitting Cs2HfI6 scintillator which is applicable in high resolution gamma spectroscopy.
It can also be used tosynthesize Cesium based nanocrystals for the detection of ionizingradiations.
Features & Benefits
- High quantum efficiency
- High stability to ambient air and gas environment
Frequently used in devices such as phosphor screens for medical imaging, scintillators, calorimeters and a variety of particle detectors.
CAS Number | 7789-17-5 |
Empirical Formula | CsI |
Molecular Weight | 259.81 |
Form | Solid |
Assay | 99.999% trace metals basis |
Impurities | ≤15.0 ppm Trace Metal Analysis |
Application(s) | solar cells, LEDs, and lasers |
Cesium Iodide, AnhydroBeads™, 99.999% trace metals basis (Perovskite grade) – Sigma Aldrich
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Synonyms
Cesium monoiodide
General Description
Cesium iodide anhydrous can be used as a precursor or component in the synthesis of the perovskite absorber layer in perovskite solar cells. By introducing cesium iodide into the perovskite composition, the bandgap of the material can be tuned to better match the solar spectrum, optimizing the light absorption and energy conversion efficiency of the solar cell.
Cesium iodide finds application in synthesis of perovksites based photovoltaic materials. Our perovskite grade CsI can readily be dissolved in 1:1 vol DMF/DMSO to yield 1M solution.
Features & Benefits
Frequently used in devices such as phosphor screens for medical imaging, scintillators, calorimeters and a variety of particle detectors.
Packing
Packaged in ampules
Legal Information
AnhydroBeads is a trademark of Sigma-Aldrich Co. LLC
CAS Number | 7789-17-5 |
Empirical Formula | CsI |
Molecular Weight | 259.81 |
Product line | AnhydroBeads™ |
Assay | 99.999% trace metals basis |
Form | crystals |
Particle size | ~10 mesh |
Formamidinium Iodide | Greatcell Solar® – Sigma Aldrich
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Synonyms
Greatcell Solar®, Iminomethylamine hydriodide, Methanimidamide iodide
General Description
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Application
Formamidinium iodide (FAI) is an organic halide, which can be used as a precursor solution in the fabrication of perovskite-based heterojunction solar cells.
Formamidinium iodide (FAI) serves as a critical precursor material in the fabrication of perovskite solar cells. FAI is used in material engineering studies to investigate the impact of formamidinium incorporation on perovskite film properties and device performance.
The iodide and bromide based alkylated halides find applications as precursors for fabrication of perovskites for photovoltaic applications.
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Product of Greatcell Solar Materials Pty Ltd.
Greatcell Solar® is a registered trademark of Greatcell Solar Materials Pty Ltd
Greatcell Solar is a registered trademark of Greatcell Solar
Description | Elemental Analysis: C ~7.0% |
Linear Formula | CH5IN2 |
Molecular Weight | 171.97 |
MDL number | MFCD28369273 |
UNSPSC Code | 12352101 |
NACRES | Na.23 |
Greener alternative product characteristics | Design for Energy Efficiency |
Formamidinium Iodide, ≥99%, Anhydrous – Sigma Aldrich
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Synonyms
Formamidine Hydroiodide, methanimidamide hydroiodide
General Description
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Application
Formamidinium iodide (FAI) is a compound that finds significant application in the field of photovoltaics, particularly in the development of perovskite solar cells. Formamidinium-based perovskite materials derived from FAI have also shown potential in other optoelectronic applications. These include light-emitting diodes (LEDs), photodetectors and lasers.
Organohalide based perovskites have emerged as an important class of material for solar cell applications[1][2][3][4]. Our perovskites precursors with extremely low water contents are useful for synthesizing mixed cation or anion perovskites needed for the optimization of the band gap, carrier diffusion length and power conversion efficiency of perovskites based solar cells.
CAS Number | 879643-71-7 |
Empirical Formula (Hill Notation) | CH5IN2 |
Molecular Weight | 171.97 |
MDL number | MFCD28369273 |
UNSPSC Code | 12352111 |
NACRES | Na.23 |
Greener alternative product characteristics | Design for Energy Efficiency |

Lead(II) iodide, AnhydroBeads™, −10 mesh, 99.999% trace metals basis – Sigma Aldrich
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Synonyms
Lead diiodide, Lead diiodide (PbI2), Lead iodide, Plumbous iodide
General Description
Lead(II) iodide is a wide band gap(2.32 eV)semiconductor material with unique properties such as high resistivity, a widetemperature range (−200 °C up to +130 °C), and good chemical stability.
Application
Lead(II)iodide can be used as a starting material to prepare:
- Polycrystalline α-FAPbI3 thin films by solution processing method. These polycrystalline thin films are applicable as photodetectors.
- Organic/inorganic hybrid 2D perovskite materials, applicable in solar cells.
It can also be used to fabricate a gamma-ray detector at room temperature.
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AnhydroBeads is a trademark of Sigma-Aldrich Co. LLC
CAS Number | 10101-63-0 |
Linear Formula | PbI2 |
Molecular Weight | 461.01 |
Reaction Suitability | Core: lead |
Impurities | ≤15.0 ppm Trace Metal Analysis |
Particle size | −10 mesh |
Application(s) | electroplating |
Methylammonium iodide | Greatcell Solar® – Sigma Aldrich
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Synonyms
Methanamine hydriodide, Greatcell Solar®, Methanaminium iodide, Methylamine hydriodide, Methylamine hydroiodide, Monomethylammonium iodide
General Description
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Application
Methylammonium iodide (MAI) can be used as a precursor in combination with lead iodide to change the morphology of the perovskite materials. Perovskite materials can further be utilized in the fabrication of alternative energy devices such as light emitting diodes (LEDs), and perovskite solar cells (PSCs).
Methylammonium iodide (MAI) is utilized in the production of various optoelectronic devices, including light-emitting diodes (LEDs), photodetectors and lasers. MAI is employed in the synthesis of perovskite-based semiconductors, which have garnered interest in the field of electronics due to their exceptional photovoltaic and optoelectronic properties. MAI can be used to sensitize other types of solar cells, such as dye-sensitized solar cells (DSSCs), by enhancing light absorption and electron transfer processes.
The iodide and bromide based alkylated halides find applications as precursors for fabrication of perovskites for photovoltaic applications.
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Product of Greatcell Solar®
Greatcell Solar is a registered trademark of Greatcell Solar
Linear Formula | CH3NH2 • HI |
CAS Number | 14965-49-2 |
Molecular Weight | 158.97 |
MDL number | MFCD28100833 |
UNSPSC Code | 12352302 |
NACRES | Na.23 |
Greener alternative product characteristics | Design for Energy Efficiency |
Methylammonium Iodide, ≥99%, anhydrous – Sigma-Aldrich
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Synonyms
Methanamine, hydriodide
General Description
We are committed to bringing you Greener Alternative Products, which adhere to one or more of the 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Click here for more details.
Application
Methylammonium iodide (MAI) has been widely used in the development of perovskite solar cells. MAI is typically used as a precursor material in the fabrication of perovskite thin films. It acts as a source of methylammonium cations (CH3NH3+) and iodide anions (I-) that are necessary for the formation of the perovskite crystal structure.
Methylammonium iodide, an organic halide-based perovskite material, can be used in the fabrication of high-performance organic solar cells.
Organohalide-based perovskites have emerged as an important class of material for solar cell applications. Our perovskite precursors with extremely low water contents are useful for synthesising mixed cation or anion perovskites needed for the optimization of the band gap, carrier diffusion length and power conversion efficiency of perovskite-based solar cells.
Lineaer Formula | CH3NH2 • HI |
CAS Number | 14965-49-2 |
Molecular Weight | 158.97 |
MDL number | MFCD28100833 |
UNSPSC Code | 12352302 |
NACRES | Na.23 |
Greener alternative product characteristics | Design for Energy Efficiency |
Methylammonium iodide, 98% – Sigma Aldrich
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Synonyms
Methanamine hydriodide
Application
Methanamine hydriodide is an important precursor for the preparation of perovskite photoactive layers for solar energy conversion. Methylammonium iodide (MAI) is extensively used as a precursor material for the fabrication of perovskite solar cells. These solar cells offer high conversion efficiencies.
Methylammonium iodide can be used as a precursor in combination with lead iodide to change the morphology of the resulting perovskite materials. Perovskite materials can further be utilized in the fabrication of alternative energy devices such as light emitting diodes (LEDs), and perovskite solar cells (PSCs).
Other Notes
We are committed to bringing you Greener Alternative Products, which adhere to one or more of The 12 Principles of Greener Chemistry. This product has been enhanced for energy efficiency. Find details here.
CAS Number | 14965-49-2 |
Molecular Weight | 158.97 |
MDL number | MFCD28100833 |
UNSPSC Code | 12352302 |
NACRES | Na.23 |
Greener alternative product characteristics | Design for Energy Efficiency |

Tin(II) iodide, AnhydroBeads™, −10 mesh, 99.99% trace metals basis (Sigma-Aldrich)
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Synonyms
Stannous iodide, Tin diiodide
General Description
Tin(II) iodide AnhydroBeads™−10 mesh, 99.99% trace metals basis, comes as beads with red to purple in colour with applications in semiconductor research, solar cells, material science, chemical synthesis, catalysis, and photonics. Tin (II) iodide is widely used as a precursor to prepare lead-free, non-toxic hybrid perovskite materials. Tin-based perovskites show excellent electrical and optical properties such as high charge carrier mobility, absorption coefficient, and small exciton binding energies.
Applications
Tin(II) iodide (SnI₂) is a versatile compound with a range of applications in research, particularly in semiconductor technology, solar cells, chemical synthesis, catalysis, etc. SnI₂ is used in perovskite solar cells as a precursor for tin-based perovskites or as an additive to improve device stability and performance. The addition of a small amount of 2D tin film induces well-defined orientation and superior crystallinity in formamidinium tin iodide (FASnI3) films. This results in the longer life of charge carriers and improves the performance of the hybrid perovskite solar cell (HPSC). It can also be used to prepare solution-processable lamellar hybrid
[CH3(CH2)11NH3]SnI3semiconductor.Its catalytic properties can be leveraged to develop new synthetic methodologies such as reductions, cyclisations, and coupling reactions. It is suitable to be use in photonic applications, including sensors and photovoltaic devices. It is used as a deposition material for preparing thin films for use in electronic and optoelectronic devices. Techniques like chemical vapour deposition (CVD) and physical vapour deposition (PVD) are explored for creating high-quality films. In a study, it is found that when a novel catalytic system comprised of tin sulfide (SnS) nanoflakes as a solid catalyst and tin iodide (SnI2) as a dual-functional electrolyte additive, the Li-air battery enables operating at high current rates up to 10 000 mA g−1 (corresponding to 1 mA cm−2). Also it has been observed that that the role of the SnI2 is not only reacting with the lithium anode to provide protection but reducing the charge potential by promoting catalytic decomposition of the Li2O2.
Features & Benefits
Tin(II) iodide AnhydroBeads™, −10 mesh, 99.99% trace metals basis is designed and tested under stringent dry manufacturing conditions to ensure low water content, trace metal purity of 99.99%, and low surface area-to-volume ratio. The salt possesses excellent electrical and optical properties such as high charge carrier mobility, absorption coefficient, and small exciton binding energies. The advantages of our AnhydroBeads™ salts are as follows:
1) Reduced uptake rate of environmental moisture minimises caking, dusting, and static buildup for repeated easy handling.
2) Higher crucible packing densities and lower volatility in high-temperature solid-state procedures.
3) Easier pneumatic loading of salts to sample chambers due to fewer clogging issues associated with powdered salt counterparts.
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AnhydroBeads is a trademark of Sigma-Aldrich Co. LLC
CAS Number | 10294-70-9 |
Empirical Formula | SnI2 |
Molecular Weight | 372.52 |
Reaction suitability | Core: Tin |
Assay | 99.99% trace metals basis |
Impurities | ≤150.0 ppm Trace Metal Analysis |
Particle size | −10 mesh |