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Formamidinium Bromide CH₃BrN₂ 99% Purity FABr White Solid Perovskite Bandgap Tuning Precursor CAS 146958-06-7 Light-Sensitive Hygroscopic Storage

Formamidinium Bromide FABr 99% 10 g Perovskite

$200.00

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Research-grade FABr white crystalline solid, CH3BrN2, CAS 146958-06-7, >99% purity, 10 g pack for mixed-halide perovskite films. Order now.

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Description

FORMAMIDINIUM BROMIDE CH₃BRN₂ 99% FABR CAS 146958-06-7

RESEARCH GRADE MATERIAL

Product Overview
Formamidinium Bromide (CH₃BrN₂, FABr, CAS 146958-06-7) is a bromine-based formamidinium perovskite precursor with CH₃BrN₂ 99% purity FABr, supplied as a white crystalline solid with a molecular weight of 124.97 g/mol. This high-purity organohalide salt is primarily employed for preparing bromide-containing formamidinium-based hybrid perovskite thin films, serving as an essential perovskite bandgap tuning precursor that enables precise adjustment of the perovskite bandgap width and optimization of device optoelectronic performance. By controlling the bromide-iodide ratio in mixed-halide FA-based formulations, researchers can systematically engineer absorption onset and emission wavelength for specific photovoltaic and light-emitting applications. The material is widely utilized in university and research institute laboratories for photovoltaic cell, photodetector, and light-emitting device experimental research. Compatible with mainstream thin-film processing techniques including spin-coating and solution blending, this precursor requires strict light-sensitive hygroscopic dry storage to maintain stoichiometric integrity.

Technical Specifications
PARAMETER DETAILS
Molecular Formula CH₃BrN₂
CAS Number 146958-06-7
Molecular Weight 124.97 g/mol
Specification 10 g
Purity >99%
Physical Form White Crystalline Solid
Storage Conditions Light-Protected, Dry, Sealed, Room Temperature
Custom Configurations Other packaging specifications are available upon request. Please contact us via email for custom orders.

Key Features & Advantages
  • Precise Bandgap Engineering via Bromide Incorporation: FABr serves as the bromide source for mixed-halide FAPb(I₁₋ₓBrₓ)₃ perovskite formulations, enabling systematic bandgap tuning from approximately 1.48 eV to 2.23 eV for tandem solar cells, semi-transparent devices, and wavelength-specific photodetectors.
  • Enhanced Phase Stability in Formamidinium-Based Perovskites: Bromide incorporation into FA-based perovskite compositions stabilizes the photoactive α-phase cubic perovskite structure, suppressing the undesirable hexagonal δ-phase transition that limits pure FAPbI₃ device performance.
  • Ultra-High Purity Exceeding 99%: The formamidinium bromide is refined to >99% purity with low batch impurity content, minimizing extrinsic ionic defects in mixed-halide perovskite thin films and supporting reproducible device performance across experimental batches.
  • Room Temperature Storage Convenience: The material is stored at room temperature under light-protected, dry, sealed conditions, simplifying laboratory inventory management without requiring refrigeration or freezing equipment.

APPLICATION SCOPE: Primary bromide source for mixed-halide FAPb(I₁₋ₓBrₓ)₃ perovskite formulations enabling bandgap engineering in high-efficiency single-junction and tandem solar cells. Essential precursor for wide-bandgap perovskite top cells in perovskite-silicon tandem architectures. Compatible with one-step spin-coating, two-step sequential deposition, and solution blending protocols. Supports perovskite light-emitting diode and photodetector research requiring bromide-tuned emission and absorption characteristics. Widely adopted in university and research institute laboratories for formamidinium-based optoelectronic device development.
PACKAGING: This listing is for the 10 g specification. Other packaging weights are available upon custom request. Each package is sealed under inert atmosphere within light-protective packaging to prevent photodegradation and moisture ingress. The hygroscopic nature of formamidinium bromide necessitates immediate transfer to a desiccated, light-protected storage environment upon receipt. For bulk quantities or custom packaging specifications, please contact us via email.
IMPORTANT NOTICE: Formamidinium bromide is hygroscopic and light-sensitive. Tighten the container cap immediately after each use to prevent moisture ingress from ambient air. Wear protective gloves throughout all experimental procedures to avoid direct skin contact. Store in a light-protected, moisture-free environment; do not store together with strong oxidizing agents or acidic reagents. Exposure to atmospheric moisture will cause deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry. When preparing precursor solutions, handle the white crystalline solid within an inert-atmosphere glovebox (H₂O < 1 ppm, O₂ < 1 ppm). For detailed safety and handling information, consult the Safety Data Sheet prior to use.
TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official quotations.
EMAIL: inquiry@atomfair.com
Manufacturer: Atomfair LLC
Brand: ATOMFAIR®

Formamidinium bromide is hygroscopic and light-sensitive, requiring strict moisture exclusion and light protection. Exposure to atmospheric moisture causes deliquescence and hydrolysis, degrading precursor stoichiometry.

  • Storage Conditions: Store in a light-protected, dry, sealed container at room temperature.
  • Glovebox Handling: Handle the material within an inert-atmosphere glovebox with H2O < 1 ppm and O2 < 1 ppm.
  • Cap Closure: Tighten the container cap immediately after each use to prevent moisture ingress.
  • Incompatibility: Do not store together with strong oxidizing agents or acidic reagents.
  • Personal Protection: Wear protective gloves throughout all experimental procedures to avoid direct skin contact.

This protocol ensures stoichiometric integrity of hygroscopic formamidinium bromide. Follow these steps to prevent moisture and light degradation.

Required Equipment: Inert-atmosphere glovebox, Light-protective storage container, Protective gloves

  1. Transfer to Storage
    Transfer the material to a desiccated, light-protected storage environment upon receipt.
  2. Store Appropriately
    Store in a light-protected, dry, sealed container at room temperature.
  3. Don Protective Gear
    Wear protective gloves before handling the material.
  4. Handle in Glovebox
    Handle the white crystalline solid within an inert-atmosphere glovebox with H2O < 1 ppm and O2 < 1 ppm.
  5. Reseal Container
    Tighten the container cap immediately after each use to prevent moisture ingress.

How does the bromide-to-iodide ratio in FAPb(I₁₋ₓBrₓ)₃ formulations affect both bandgap energy and phase stability?

Increasing bromide content widens the bandgap from approximately 1.48 eV to 2.23 eV while simultaneously stabilizing the photoactive α-phase cubic perovskite structure, suppressing the undesirable hexagonal δ-phase transition that limits pure FAPbI₃ device performance. This dual benefit allows systematic bandgap engineering without compromising phase stability, making FABr essential for tandem solar cells and wide-bandgap applications.

What are the critical handling requirements for using Formamidinium Bromide in mixed-halide perovskite thin-film deposition?

FABr must be handled exclusively within an inert-atmosphere glovebox (H₂O < 1 ppm, O₂ < 1 ppm) when preparing precursor solutions due to its extreme hygroscopicity and light sensitivity. Exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry. The material is compatible with one-step spin-coating, two-step sequential deposition, and solution blending protocols, but all steps must be performed under controlled atmosphere.

What storage conditions are required to prevent degradation of Formamidinium Bromide (FABr) and maintain its >99% purity?

Store FABr at room temperature under light-protected, dry, sealed conditions. Each package is sealed under inert atmosphere within light-protective packaging. Upon receipt, immediately transfer to a desiccated, light-protected environment. Tighten container cap immediately after each use to prevent moisture ingress. Do not store with strong oxidizing agents or acidic reagents. The material is hygroscopic and light-sensitive; improper storage leads to deliquescence and hydrolysis.

Formamidinium Bromide (99% purity, FABr) is a high-purity organohalide salt for bromide-based perovskite bandgap engineering, enabling precise bandgap tuning from ~1.48 to 2.23 eV and enhanced α-phase stability. However, its extreme hygroscopic and light-sensitive nature necessitates inert-atmosphere glovebox handling and immediate transfer to desiccated, light-protected storage, imposing significant infrastructure demands for laboratory deployment.

Positive

  • Precise bandgap engineering capability: Serves as the bromide source for mixed-halide FAPb(I₁₋ₓBrₓ)₃ formulations, enabling systematic bandgap tuning from approximately 1.48 eV to 2.23 eV for tandem solar cells and wavelength-specific photodetectors.
  • Enhanced α-phase perovskite stability: Bromide incorporation into FA-based compositions stabilizes the photoactive α-phase cubic structure, suppressing the undesirable hexagonal δ-phase transition that limits pure FAPbI₃ device performance.

Trade-offs

  • Hygroscopic and light-sensitive storage requirement: Requires immediate transfer to a desiccated, light-protected environment upon receipt; exposure to atmospheric moisture causes deliquescence and hydrolysis, irreversibly degrading precursor stoichiometry.
  • Inert-atmosphere glovebox handling mandatory: Precursor solution preparation must be performed within an inert-atmosphere glovebox (H₂O < 1 ppm, O₂ < 1 ppm) to prevent moisture ingress and maintain stoichiometric 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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