Description
METHYLAMMONIUM BROMIDE CH₃NH₃BR 99% CAS 6876-37-5RESEARCH GRADE MATERIAL
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TAILORED SOLUTIONS FOR RESEARCH
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EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This material is highly hygroscopic and light-sensitive, requiring storage under inert atmosphere in light-protected sealed containers at room temperature. Exposure to moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry for perovskite synthesis.
- Moisture Sensitivity: Atmospheric moisture causes deliquescence and hydrolysis, permanently altering the bromide content and stoichiometric balance.
- Light Sensitivity: Prolonged exposure to ambient light induces photodegradation, compromising the material's purity and reactivity.
- Inert Atmosphere Requirement: All handling and storage must occur in an inert-atmosphere glovebox with H2O and O2 levels maintained below 1 ppm.
- Oxidizer Incompatibility: Contact with strong oxidizing agents must be avoided to prevent exothermic decomposition and loss of material integrity.
This procedure outlines the safe handling and preparation of methylammonium bromide precursor solutions for perovskite solar cell fabrication. All manipulations must be performed in an inert-atmosphere glovebox to prevent moisture and oxygen exposure.
Required Equipment: Inert-atmosphere glovebox (H2O < 1 ppm, O2 < 1 ppm), Spin coater
- Verify glovebox conditions
Confirm that the glovebox atmosphere maintains H2O and O2 concentrations below 1 ppm before introducing any material. - Transfer solid to glovebox
Transfer the white crystalline solid into the glovebox using a sealed, light-protected container to avoid exposure during transit. - Prepare precursor solution
Dissolve the methylammonium bromide in anhydrous solvent immediately prior to use to create the precursor solution. - Deposit precursor film
Spin-coat the precursor solution onto a pre-deposited film to form the perovskite layer via in-situ conversion.
How does the 99% purity of methylammonium bromide affect the reproducibility of wide-bandgap perovskite solar cells compared to lower-purity sources?
The >99% purity minimizes extrinsic ionic impurities in perovskite thin films, which is critical for reproducible device performance. Lower-purity sources introduce uncontrolled dopants or defect sites that shift the bandgap and degrade open-circuit voltage in wide-bandgap MAPbBr₃ or mixed-halide formulations, whereas this material ensures consistent stoichiometric control with a defined molecular weight of 111.97 g/mol.
Can methylammonium bromide be used directly in two-step sequential deposition protocols without additional purification?
Yes, the white crystalline solid at >99% purity is suitable for direct use in two-step sequential deposition protocols where the precursor solution is spin-coated onto pre-deposited films for in-situ perovskite conversion. However, it must be handled exclusively within an inert-atmosphere glovebox (H₂O < 1 ppm, O₂ < 1 ppm) and dissolved in anhydrous solvent immediately prior to use to prevent hydrolysis from its hygroscopic nature.
What specific storage conditions are required to prevent deliquescence and hydrolysis of methylammonium bromide in a typical lab environment?
The material requires light-protected, dry, sealed storage at room temperature, ideally in a desiccator or nitrogen-filled glovebox protected from ambient light. Exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry. Each package is sealed under inert atmosphere within light-protective packaging, and upon receipt, immediate transfer to a desiccated, light-protected environment is necessary.
This 99% pure methylammonium bromide provides the bromide source for MAPbBr₃ and mixed-halide perovskite formulations, but requires strict inert-atmosphere and light-protected storage to prevent hygroscopic degradation and maintain stoichiometric integrity.
Positive
- High purity >99% for reproducible devices: Purity exceeding 99% minimizes extrinsic ionic impurities in perovskite thin films, supporting reproducible device performance in solar cell fabrication.
- Room temperature storage simplifies inventory: The material is stored at room temperature under light-protected, dry, sealed conditions, eliminating the need for refrigeration and streamlining laboratory inventory management.
Trade-offs
- Hygroscopic requires inert atmosphere handling: The compound is highly hygroscopic; exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading stoichiometry. Handling must be performed exclusively in a glovebox (H₂O < 1 ppm, O₂ < 1 ppm) with immediate use in anhydrous solvent.
- Light-sensitive storage required: The material is light-sensitive and must be stored in light-protective packaging or a desiccator protected from ambient light at room temperature to prevent photodegradation and loss of precursor integrity.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
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