Rb1 Sn1 F3

RbSnF₃ is a halide perovskite compound, a class of crystalline materials with a characteristic cubic ABX₃ structure where rubidium occupies the A-site, tin the B-site, and fluorine forms the X-site anions. This is primarily a research material under investigation for optoelectronic and photovoltaic applications, particularly as an alternative to lead-based perovskites due to tin's lower toxicity and potential for tunable bandgap properties. The fluoride framework differentiates it from the more commonly studied iodide and bromide perovskites, offering potential advantages in thermal stability and reduced ion migration, though it remains in the experimental phase without widespread commercial deployment.