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.

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CAS 146958-06-7

Formamidinium Bromide CH₃BrN₂ 99% FABr CAS 146958-06-7