“…Colloidal semiconductor quantum dots (QDs), tiny nanoparticles with dimensions spanning just a few nanometers, 26–31 exhibit unique size- and shape-dependent properties compared to their bulk counterparts resulting from quantum confinement effects. 32–35 They have emerged as efficient and versatile sensitizers for the photoelectrodes (usually, photoanodes) of PEC devices due to several advantages: tunable bandgap, large light absorption coefficient, facile synthesis, ease of surface functionalization, and solution processability. 15–19,36–38 The discussed drawbacks ( i.e.…”