| Identification | Back Directory | [Name]
ForMaMidiniuM Iodide | [CAS]
879643-71-7 | [Synonyms]
HC(NH2)2I(FAI)
ForMaMidiniuM Iodide
Formamidine hydriodide
Formamidine Hydroiodide
Imidoformamide hydroiodide (1:1)
Formamidine Hydroiodide (Low water content) | [EINECS(EC#)]
827-106-7 | [Molecular Formula]
CH5IN2 | [MDL Number]
MFCD28369273 | [MOL File]
879643-71-7.mol | [Molecular Weight]
171.968 |
| Chemical Properties | Back Directory | [Melting point ]
335°C | [Water Solubility ]
Soluble in water | [form ]
powder | [Application]
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]. | [color ]
White powder/crystals | [Description]
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. 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. |
| Hazard Information | Back Directory | [Uses]
Organohalide based perovskites have emerged as an important class of material for solar cell applications. Our perovskites precursors with extremely low water contents are useful for synthesizing mixed cation or anion perovskites needed for the optimization of the band gap, carrier diffusion length and power conversion efficiency of perovskites based solar cells. | [General Description]
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. 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. | [Battery Materials]
Formamidinium iodide is one of the most common precursors used in the preparation of perovskite-based opto-electronic systems, including light-emitting diodes (LEDs) and perovskite solar cells (PSCs). | [References]
[1] EPERON G E, STRANKS S D, MENELAOU C, et al. Formamidinium lead trihalide: a broadly tunable perovskite for efficient planar heterojunction solar cells†[J]. Energy & Environmental Science, 2014, 3: 982-988. DOI:10.1039/C3EE43822H.
[2] SARAH WOZNY. Controlled Humidity Study on the Formation of Higher Efficiency Formamidinium Lead Triiodide-Based Solar Cells[J]. Chemistry of Materials, 2015, 27 13: 4814-4820. DOI:10.1021/acs.chemmater.5b01691.
[3] ZAIWEI WANG. Additive-Modulated Evolution of HC(NH2)2PbI3 Black Polymorph for Mesoscopic Perovskite Solar Cells[J]. Chemistry of Materials, 2015, 27 20: 7149-7155. DOI:10.1021/acs.chemmater.5b03169.
[4] Compositional engineering of perovskite materials for high-performance solar cells, N. Jeon et al., Nature 517, 476–480 (2015), doi:10.1038/nature14133.
[5] WOON SEOK YANG. High-performance photovoltaic perovskite layers fabricated through intramolecular exchange[J]. Science, 2015, 348 6240. DOI:10.1126/science.aaa9272.
[6] Temperature dependence of hole conductor free formamidinium lead iodide perovskite based solar cells, S. Aharon et al., J. Mater. Chem. A., 3, 9171-9178 (2015), DOI: 10.1039/C4TA05149A.
[7] High-Efficiency Perovskite Solar Cells Based on the Black Polymorph of HC(NH2)2PbI3, J-W. Lee et al., Adv. Mater., 26: 4991–4998 (2014). doi:10.1002/adma.201401137.
[8] Efficient hole-conductor-free, fully printable mesoscopic perovskite solar cells with a broad light harvester NH2CH=NH2PbI3, M. Hu et al., J. Mater. Chem. A, 2, 17115-17121 (2014), DOI: 10.1039/C4TA03741C. |
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