This review focuses on the charge transfer processes from zero-dimensional (0D) quantum dots, one-dimensional (1D) nanorods, and two-dimensional (2D) nanoplatelets (NPLs) to various acceptors, emphasizing their dependence on the nanocrystal dimensionality. The electronic and optical properties of these nanocrystals are discussed, including the effects of dimensionality and size. Wave function engineering in heteronanocrystals is explored, highlighting how the spatial distribution of electrons and holes can be tailored through size, dimension, and composition. The review also covers single carrier transfer, multiple exciton generation (MEG), and its decay and dissociation, as well as the design and performance of nanocrystal-based photocatalytic systems. Finally, it provides a summary of key advances and future directions in the field.This review focuses on the charge transfer processes from zero-dimensional (0D) quantum dots, one-dimensional (1D) nanorods, and two-dimensional (2D) nanoplatelets (NPLs) to various acceptors, emphasizing their dependence on the nanocrystal dimensionality. The electronic and optical properties of these nanocrystals are discussed, including the effects of dimensionality and size. Wave function engineering in heteronanocrystals is explored, highlighting how the spatial distribution of electrons and holes can be tailored through size, dimension, and composition. The review also covers single carrier transfer, multiple exciton generation (MEG), and its decay and dissociation, as well as the design and performance of nanocrystal-based photocatalytic systems. Finally, it provides a summary of key advances and future directions in the field.