Description
FORMAMIDINIUM IODIDE CH₃IN₂ 99% FAI CAS 879643-71-7RESEARCH GRADE MATERIAL
|
|||||||||||||||||||||||||
|
|||||||||||||||||||||||||
|
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official quotations.
EMAIL: inquiry@atomfair.com
|
|||||||||||||||||||||||||
|
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
|
This material is strongly hygroscopic and light-sensitive, requiring storage under inert atmosphere and light protection at room temperature. Degradation occurs upon exposure to moisture or oxygen, necessitating handling in a glovebox with H2O and O2 levels below 1 ppm.
- Hygroscopicity: The material undergoes deliquescence and hydrolysis upon exposure to atmospheric moisture, irreversibly degrading precursor stoichiometry.
- Light Sensitivity: Photodegradation occurs if the material is exposed to light, requiring storage in light-protective packaging.
- Inert Atmosphere Handling: All solid handling and solution preparation must be performed in an inert-atmosphere glovebox with H2O < 1 ppm and O2 < 1 ppm.
- Compatibility Constraints: Do not store together with strong oxidizing agents or acidic reagents to prevent hazardous reactions.
- Storage Temperature: Maintain at room temperature in a sealed, dry, light-protected environment.
This protocol outlines the essential steps for safely handling hygroscopic FAI and preparing precursor solutions under controlled conditions. Failure to follow these steps can result in material degradation and compromised device performance.
Required Equipment: Inert-atmosphere glovebox, Protective gloves, Light-protected storage container
- Transfer to glovebox
Transfer the off-white solid to an inert-atmosphere glovebox with H2O and O2 levels below 1 ppm before opening the container. - Containment after use
Put on protective gloves and immediately tighten the container cap after each use to prevent moisture ingress. - Storage
Store the container in a light-protected, moisture-free environment at room temperature.
What is the trade-off between using formamidinium iodide versus methylammonium iodide for perovskite solar cell thermal stability?
Formamidinium iodide (FAI) yields perovskite films with superior thermal stability compared to methylammonium iodide (MAI)-based compositions, making it the preferred precursor for devices requiring extended operational lifetimes. However, FAPbI₃ films are more prone to phase instability at room temperature, which is why FAI is frequently combined with methylammonium iodide and cesium iodide in triple-cation formulations to balance thermal robustness with phase stability.
Can this 99% purity FAI be used directly in thermal evaporation deposition without additional purification?
Yes, the >99% purity formamidinium iodide is compatible with thermal evaporation deposition protocols as supplied. The low batch impurity content minimizes extrinsic ionic defects in the resulting perovskite thin films, supporting reproducible optoelectronic performance across both solution spin-coating and thermal evaporation techniques without requiring additional purification steps.
What specific glovebox conditions are required to prevent degradation of formamidinium iodide during precursor solution preparation?
The strongly hygroscopic off-white solid must be handled inside an inert-atmosphere glovebox with H₂O < 1 ppm and O₂ < 1 ppm to prevent deliquescence and hydrolysis, which irreversibly degrade precursor stoichiometry. After each use, the container cap must be tightened immediately, and the material stored sealed under inert atmosphere at room temperature, protected from light and moisture.
Formamidinium Iodide (FAI) with >99% purity offers enhanced thermal stability for perovskite devices but demands strict inert-atmosphere handling due to strong hygroscopicity and light sensitivity.
Positive
- Enhanced Thermal Stability for Perovskites: Formamidinium-based perovskite films exhibit superior thermal stability compared to methylammonium-based compositions, making FAI the preferred precursor for high-performance photovoltaic devices requiring extended operational lifetimes.
- Ultra-High Purity >99%: Refined to >99% purity with low batch impurity content, minimizing extrinsic ionic defects and supporting reproducible device performance across various deposition techniques.
Trade-offs
- Strong Hygroscopicity and Light Sensitivity: The material is strongly hygroscopic and light-sensitive; it must be stored sealed under inert atmosphere, protected from light, and handled in an inert-atmosphere glovebox (H₂O < 1 ppm, O₂ < 1 ppm) to prevent degradation.
- Immediate Transfer to Desiccated Storage Required: Upon receipt, the product must be immediately transferred to a desiccated, light-protected environment; exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry.
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.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
