Guanidinium Iodide
CAS Number 19227-70-4
Materials, Perovskite Materials, Perovskite Precursor Materials
High quality, high purity guanidinium iodide
Used to enhance carrier lifetimes and open circuit voltages in perovskite solar cells
Overview | Specifications | MSDS | Literature and Reviews | Resources and Support
It has been demonstrated that guanidinium iodide (GI) based additives show significant enhancement in carrier lifetimes and open-circuit voltages in hybrid organic-inorganic perovskite solar cells, due to the hydrogen bonding capability of the GI molecule [1].
Speculation is that hydrogen bonding allows for effective passivation of under-coordinated iodine species located at grain boundaries - both at the surface and internally within the bulk.
Superior performance with cell power conversion efficiencies greater than 17% and an open-circuit voltage of 1.1 V were achieved with device structure ITO/TiO2/perovskite/Spiro-OMeTAD/Au.
General Information
| CAS number | 19227-70-4 |
| Chemical formula | CH6IN3 |
| Molecular weight | 186.98 g/mol |
| Synonyms | Guanidine hydroiodide, Diaminomethaniminium iodide, Guanidine monohydroiodide, GI |
| Classification / Family | Guanidinium halides, Perovskite precursor materials, Perovskite solar cells, Perovskite LEDs |
Product Details
| Purity | >99% |
| Melting point | 194-199 °C |
| Colour | White Powder/crystals |
Chemical Structure
MSDS Documentation
Guanidinium iodide MSDS sheetLiterature and reviews
- Guanidinium: A Route to Enhanced Carrier Lifetime and Open-Circuit Voltage in Hybrid Perovskite Solar Cells, N. De Marco et al., Nano Lett., 16 (2), 1009–1016 (2016); DOI: 10.1021/acs.nanolett.5b04060.
- Guanidinium benefit, O. Graydon, Nat. Photonics 10, 145 (2016); doi:10.1038/nphoton.2016.35.
- Synthesis, Crystal Structures, Optical Properties, and Phase Transitions of the Layered Guanidinium-Based Hybrid Perovskites [C(NH2)3]2MI4; M = Sn, Pb, M. Daub et al., Eur. J. Inorg. Chem., 1120–1126 (2017); DOI: 10.1002/ejic.201601499.