3D Perovskite Nanocrystal Colloid: Ensemble Photoluminescence

A real quantum-dot synthesis is judged by the cuvette, not one crystal: dozens of nominally identical CsPb(Cl/Br/I)₃ nanocrystals suspended in solution, all sharing the same size- and composition-set bandgap, all glowing the same color under a UV pump. This simulator renders that batch in 3D — a 405 nm beam sweeping cubic nanocrystals whose shared bandgap comes from the same halide-composition and quantum-confinement physics as the 2D view, each excitation resolving into either a colored photoluminescence burst or a non-radiative trap flash. Orbit the suspension while sweeping diameter and halide mix to watch the whole batch shift color and quantum yield together, the way a real perovskite-nanocrystal researcher reads a cuvette.