In2CuSe3Br

In2CuSe3Br is a quaternary semiconductor compound combining indium, copper, selenium, and bromine—a rare mixed-halide chalcogenide material that exists primarily in research contexts rather than established commercial production. This compound belongs to the broader family of ternary and quaternary semiconductors being investigated for optoelectronic and photovoltaic applications, where the addition of bromine to copper-indium-selenide systems offers potential tuning of bandgap and electronic properties. Interest in such materials stems from their theoretical advantages in absorber layer design for thin-film solar cells and visible-light photocatalysis, though practical engineering adoption remains limited pending demonstration of scalable synthesis, phase stability, and competitive performance metrics.