Dimethylammonium Iodide Powder C2H8IN 99% 5 g ATOMFAIR®

Dimethylammonium iodide is a hygroscopic and light-sensitive perovskite precursor that requires strict moisture and light protection to prevent deliquescence and hydrolysis. Long-term storage under inert atmosphere (N₂ glovebox with H₂O < 1 ppm and O₂ < 1 ppm) is recommended to maintain material stoichiometry and performance.

• Moisture Sensitivity: Exposure to atmospheric moisture causes deliquescence and irreversible hydrolysis, degrading the precursor stoichiometry.
• Light Sensitivity: Photodegradation occurs upon exposure to light, necessitating storage in light-protective packaging and a dark environment.
• Inert Atmosphere Requirement: Powder weighing and solution preparation must be performed inside a nitrogen-filled glovebox with H₂O < 1 ppm and O₂ < 1 ppm.
• Incompatible Materials: Do not store with strong oxidizing agents or acidic reagents to avoid hazardous reactions or contamination.
• Container Handling: Tighten the container cap immediately after each use to prevent moisture ingress from ambient air.

This guide outlines the critical steps for handling and storing dimethylammonium iodide to prevent moisture-induced degradation and maintain precursor purity. Follow these procedures under inert atmosphere conditions to ensure reproducible perovskite device performance.

Required Equipment: Nitrogen-filled glovebox with H₂O < 1 ppm and O₂ < 1 ppm, Light-protective storage container, Anhydrous polar solvents (DMF, DMSO, methanol), Protective gloves

1. Transfer to Glovebox
   Transfer the sealed DMAI package directly into a nitrogen-filled glovebox (H₂O < 1 ppm, O₂ < 1 ppm) upon receipt to prevent moisture exposure.
2. Weigh DMAI Powder
   Weigh the desired amount of dimethylammonium iodide powder inside the glovebox using a clean spatula and analytical balance.
3. Prepare Precursor Solution
   Prepare the precursor solution by dissolving the powder in anhydrous DMF, DMSO, or methanol under inert atmosphere, ensuring complete dissolution.
4. Store in Light-Protected Container
   Store the solution or remaining powder in a light-protected, sealed container inside the glovebox for long-term stability.
5. Tighten Cap After Use
   Tighten the container cap immediately after each use to prevent moisture ingress from ambient air.

Dimethylammonium Iodide (DMAI) 99% is a research-grade perovskite precursor designed for lattice distortion engineering and iodine vacancy passivation in 3D, low-dimensional, and 2D perovskite materials. Its compact secondary ammonium cation enables controlled steric tuning and defect mitigation, but the compound's hygroscopic and light-sensitive nature mandates strict inert-atmosphere glovebox handling and light-protected storage to prevent deliquescence and stoichiometric degradation.

Positive

• Compact secondary ammonium for lattice distortion: The dimethylammonium cation introduces controlled lattice distortion in 3D perovskite structures, providing a steric tuning parameter distinct from monovalent primary ammonium cations for modulating crystal symmetry and optoelectronic properties.
• Iodine vacancy passivation via secondary ammonium: The dimethylammonium cation effectively stabilizes the local chemical environment around iodine sites, passivating halide vacancy defects that are primary contributors to non-radiative recombination losses in perovskite thin films.

Trade-offs

• Hygroscopic and light-sensitive storage required: The compound is hygroscopic and light-sensitive; exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry. Storage must be in light-protected, dry, sealed containers, with long-term storage in a nitrogen glovebox (H2O < 1 ppm, O2 < 1 ppm).
• Inert atmosphere handling mandatory: Powder weighing and solution preparation should be performed in a nitrogen-filled inert glovebox to prevent moisture ingress. Ambient handling risks rapid degradation, requiring immediate transfer to desiccated, light-protected environments after each use.

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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