Formamidinium Iodide Description
Formamidinium Iodide is a chemical compound with the formula CH(NH₂)₂I. It is commonly used as a key material in the development of perovskite solar cells, a type of photovoltaic technology. The formamidinium (FA+) cation in FAI is often combined with lead iodide (PbI₂) or other metal halides to create perovskite materials with desirable optoelectronic properties.
Formamidinium Iodide Specification
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Appearance
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White powder
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CAS No.
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879643-71-7
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Chemical Formula
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CH5IN2
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Molecular Weight
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171.97
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Purity
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≥99.5%
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Solubility
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Soluble in water
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Melting Point
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335℃
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Formamidinium Iodide Applications
FAI-based perovskites offer improved efficiency and long-term stability for solar cell performance.
FAI is a popular choice in tandem solar cells and in hybrid halide perovskite compositions, which can have mixed cations (formamidinium, methylammonium) to optimize efficiency and durability.
Besides solar cells, FAI is also studied for use in other optoelectronic devices, such as light-emitting diodes (LEDs) and photodetectors.
Formamidinium Iodide Packaging
Our Formamidinium Iodide is carefully handled during storage and transportation to preserve the quality of our product in its original condition.
1, 5g/glass bottle, or customized.
FAQs
Q1: What is the primary use of Formamidinium Iodide in solar cells?
Answer: FAI is primarily used in the formation of formamidinium lead iodide (FAPbI₃), a perovskite material that is essential for the active layer in solar cells. It improves the efficiency and stability of perovskite solar cells by providing a more stable crystal structure and optimizing light absorption.
Q2: Why is Formamidinium Iodide preferred over Methylammonium Iodide (MAI) in perovskites?
Answer: FAI is often preferred because it results in a perovskite material (FAPbI₃) with better thermal and structural stability compared to MAI-based perovskites (MAPbI₃). This stability improves the lifespan and performance of perovskite solar cells.
Q3: How does Formamidinium Iodide contribute to the efficiency of perovskite solar cells?
Answer: FAI contributes to efficiency by forming a perovskite structure with a lower bandgap (~1.48 eV for FAPbI₃), which allows for better light absorption across the solar spectrum. This leads to higher power conversion efficiencies in perovskite solar cells.
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