Abstract

The Cover Feature shows the strategies to improve the photoelectrochemical hydrogen evolution of quantum dot (QD)-based semiconductors (yellow balls) by applying a co-catalyst (buried grey balls) or a passivation layer (blue layers) as shown in the left electrode. The co-catalyst facilitates the charge-transfer kinetics by providing active sites for reactive species, and the passivation layer helps to protect QDs from oxidation as well as provide more conductive pathways for electrons. More information can be found in the Review by H. Kim, A. Choe, S. B. Ha and co-workers.

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