Rb2Sn3Sb2S10

Rb2Sn3Sb2S10 is a quaternary sulfide semiconductor compound combining rubidium, tin, antimony, and sulfur—a member of the complex chalcogenide family that includes both ternary and higher-order metal sulfides. This is a research-stage material studied primarily for its potential in photovoltaic and thermoelectric applications, where mixed-metal sulfides offer tunable bandgaps and crystal structures unavailable in simpler binary or ternary systems. The rubidium–tin–antimony–sulfur system represents an emerging frontier in sustainable semiconductor development, as sulfide-based absorbers can offer lower toxicity and earth-abundance advantages over conventional cadmium or lead halide perovskites, though synthesis and stability remain active research challenges.