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FAI Formamidinium Iodide Perovskite Precursor CAS 879643-71-7 Purity 99.99%

Place of Origin China
Brand Name N/A
Certification COA
Model Number OMI699
Minimum Order Quantity 1g
Price USD110-225/g
Packaging Details 1g/bottle or 5g/bottle
Delivery Time 3 working days
Payment Terms L/C, D/A, D/P, T/T, Western Union
Supply Ability 1kg/month

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Product Details
CAS No. 879643-71-7 Purity Min 99.99%
MF CH4N2·HI MW 171.97
Application Perovskite Precursor Appearance White Or Off-white Crystalline Powder
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Product Description

FAI Formamidinium Iodide Perovskite Precursor CAS 879643-71-7 Purity 99.99%




AppearanceWhite or off-white crystalline powder
ApplicationPerovskite Precursor




Formamidinium lead iodide shows a narrower bandgap than the commonly used methylammonium lead iodide (1.48 eV compared to ~1.57 eV), and hence lies closer to that favourable for optimum solar conversion efficiencies [1]. Spin-coating the formamidinium iodide (FAI) plus PbI2 precursor solution in N,N-dimethylformamide (DMF) initially resulted in discontinuous perovskite films. However, by adding a small amount of hydroiodic acid (HI) to the stoichiometric FAI, extremely uniform and continuous films were formed.
Controlled humidity is another deciding factor that affects the film morphology, crystallinity, and optical and electrical properties of FAPbI3 [2]. 16.6% PCE was achieved with low relative humidity of 2%, with the device efficiency dropped to about half (8.6%) when the humidity was 40%.
Low-volatility additives such as FACl and MACl are good candidates for assisting in the crystallisation of phase pure α-FAPbI3 via the formation of intermediate mixtures, which prohibits the crystallisation of the δ-FAPbI3 phase [3]. It also has been observed that the black perovskite-type polymorph (α-phase), which is stable at relatively high temperatures (above 160 oC), turned into the yellow FAPbI3 polymorph (δ-phase) in an ambient humid atmosphere. Results show that incorporation of MAPbBr3 into FAPbI3 stabilises the perovskite phase of FAPbI3 and improves the power conversion efficiency of the solar cell to more than 18% under a standard illumination of 100 mW/cm2 [4].
With an approach of FAPbI3 crystallisation by the direct intramolecular exchange of dimethylsulfoxide (DMSO) molecules intercalated in PbI2 with formamidinium iodide, device with performance over 20% has been fabricated [5].



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Q1: What is your regular lead time for sample and official order?

A1: Sample lead time 5-7 days. Official order lead time 14-21 days.


Q2: What is your MOQ?

A2: MOQ usually is 1kg.


Q3: How you control product quality?

A3: From raw material inspection, dupro inspection to final product inspection are executed strictly.


Q4: What is your warranty policy?

A4: We will send you a new batch if there is any quality issue during warranty time


Q5: Do you refund if customer receive defective product and do not accept replacement?

A5: Yes



Item Photo

FAI Formamidinium Iodide Perovskite Precursor CAS 879643-71-7 Purity 99.99% 0
FAI Formamidinium Iodide Perovskite Precursor CAS 879643-71-7 Purity 99.99% 1