Dark singlet exciton sensitized triplet energy transfer realized across CsPbBr3 nanoplate-organic interface

Semiconductor nanocrystals (NCs) hold great promise as sensitizers for triplet-triplet annihilation up-conversion (TTA-UC) due to their facile bandgap tunability and negligible inter-system crossing loss. However, the understanding of the correlation between bright/dark exciton and triplet energy transfer (TET) is still lacking. More research on this is strongly needed to reveal the distinctions between NCs-sensitized and molecular-sensitized TTA-UC, which is important to further tailor and enha...