High-efficiency red photoluminescence achieved by antimony doping in organic–inorganic halide (C11H24N2)2[InBr6][InBr4]

We report a new 0D lead-free halide with both [InBr 6 ] 3− octahedra and [InBr 4 ] − tetrahedra as inorganic units. High-efficiency red photoluminescence can be achieved via Sb doping in this emissive material with a PLQY of 61%.