Sn-doped polyhedral In2O3 particles: Synthesis, characterization, and origins of luminous emission in wide visible range

► Polyhedral ITO particles synthesized by thermal evaporation using SnO as dopant. ► Broad visible luminous emission around 570 nm. ► Sn donor level plays an important role in the visible emission. ► ITO particles with more oxygen vacancies have better CL performance in visible range.