Formamidinium Bromide - Bahan Prekursor untuk Sintesis Perovskit

Solar cells are a future energy source because they come from renewable energy. Not only that, solar cells are claimed to be environmentally friendly and leave no carbon footprint. The use of solar cells themselves has reached households and office buildings.

Current solar cells have one component as a precursor material for the synthesis of the perovskite absorber layer in solar cells. This compound is called formamidinium bromide. What is formamidinium bromide? How is it applied in solar cells?

What is Formamidinium Bromide?

Formamidinium Bromide (FABr) is an organobromine compound that functions as a precursor material for the synthesis of formamidinium-lead-bromide (FAPbBr3)-based perovskite as an efficient solar cell material. Formamidinium bromide has the chemical formula CH5BrN.

Formamidinium bromide has other names, namely Formamidine hydrobromide, Greatcell Solar, Iminomethylamine hydrobromide, Methanimidamide bromide.

Formamidinium Bromide Structure

Formamidinium bromide has the chemical structure CH5BrN2 with 98% purity. Physically, it resembles a powder or crystal.

Physical and Chemical Properties of Formamidinium Bromide

a. Physical Properties of Formamidinium Bromide

FABr is a white powder or crystal with a melting point of 133–140°C and a molecular weight of 124.969.

This compound is slightly soluble in water and DMSO. When stored in a storage room, it has a storage temperature of -20°C in an inert atmosphere.

b. Chemical Properties of Formamidinium Bromide

This compound is an important substance used in various fields because it has unique chemical characteristics. It belongs to the class of organic nitrogen compounds.

Organic nitrogen compounds consist of carbon, hydrogen, nitrogen, and bromine atoms that give CH6BrN its distinctive properties.

Advantages of Formamidinium Bromide

Formamidinium bromide has a purity level of 98%, ensuring excellent performance. In addition, formamidinium bromide has good thermal stability and excellent carrier mobility, making it suitable for optoelectronic materials.

Applications of Formamidinium Bromide

Formamidinium bromide can be a precursor material for the synthesis of perovskite absorber layers in solar cells. Organohalide-based perovskites have emerged as an important class of materials for solar cell applications.

The use of organohalide perovskites for the synthesis of mixed-cation and anion perovskites is used to optimize band gap, carrier diffusion length, and power conversion efficiency of perovskite-based solar cells. Its high energy band gap makes it ideal for tandem solar cell applications.