LUMINESCENT MATERIALS HAVING NANOCRYSTALS EXHIBITING MULTI-MODAL ENERGY LEVEL DISTRIBUTIONS

摘要

Luminescent materials (12, 12', 12") include a plurality of nanocrystals (20, 20', 20", 22, 22', 22"). At least some of the nanocrystals (20, 20', 20", 22, 22', 22") may be configured to emit electromagnetic radiation upon stimulation, and the plurality of nanocrystals (20, 20', 20", 22, 22', 22") may exhibit a multi- modal energy level distribution. The distribution of the nanocrystals (20, 20', 20", 22, 22', 22") may be selectively configured to enhance the luminescence efficiency of a fraction of the plurality of nanocrystals (20, 20', 20", 22, 22', 22") that exhibits one energy level mode (26, 27) of the multi-modal energy level distribution. Light-emitting diodes (10) and electronic devices (56) include such luminescent materials (12, 12', 12").