| Identification | Back Directory | [Name]
Guanidine Hydroiodide | [CAS]
19227-70-4 | [Synonyms]
Guanidine Hydroiodide | [EINECS(EC#)]
606-268-0 | [Molecular Formula]
CH5N3·HI |
| Questions And Answer | Back Directory | [Applications]
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.
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.
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