Comparison of extra electrons in colloidal n-type Al~(3+) -doped and photochemically reduced ZnO nanocrystals

摘要

The "extra" electrons in colloidal n-type ZnO nanocrystals formed by aliovalent doping and photochemical reduction are compared. Whereas the two are similar spectroscopically, they show very different electron-transfer reactivities, attributable to their different charge-compensating cations (Al~(3+) vs. H~+).