Rb2 Nb1 Cl6

Rb₂NbCl₆ is a halide perovskite semiconductor compound composed of rubidium, niobium, and chlorine—part of an emerging class of inorganic metal halides under active research for optoelectronic applications. This material family is being investigated primarily for next-generation photovoltaics, light-emitting devices, and scintillation detectors as a potentially more stable alternative to lead-based organic-inorganic perovskites, though it remains largely in the research phase rather than established in high-volume industrial production.