Energy transfer, excitons, free carrier generation, perovskite nanocrystals, transition metal dichalcogenides, trions Keywords: energy transfer; excitons; free carrier generation; perovskite nanocrystals; transition metal dichalcogenides; trions EN energy transfer excitons free carrier generation perovskite nanocrystals transition metal dichalcogenides trions 1 1 1 07/20/22 20220718 NES 220718 Cesium lead bromide (CsPbBr SB 3 sb ) nanocrystals with excellent absorption and emission properties when coupled to a molybdenum diselenide (MoSe SB 2 sb ) monolayer, transfer more than 86% of their photo-excited energy to MoSe SB 2 sb . [Extracted from the article]