Semiconductor quantum dot-sensitized rainbow photocathode for effective photoelectrochemical hydrogen generation.

ABSTRACT: The present study reports the fabrication of CdSe quantum dot (QD)-sensitized photocathodes on NiO-coated indium tin oxide (ITO) electrodes and their H₂-generating ability upon light irradiation. A well-established spin-coating method was used to deposit CdSe QD stock solution onto the surface of NiO/ITO electrodes, thereby leading to the construction of various CdSe QD-sensitized photocathodes. The present report includes the construction of rainbow photocathodes by spin-coating different-sized QDs in a sequentially layered manner, thereby creating an energetically favorable gradient for charge separation. The resulting rainbow photocathodes with forward energetic gradient for charge separation and subsequent electron transfer to a solution-based hydrogen-evolving catalyst (HEC

SUBMITTER: Lv H 

PROVIDER: S-EPMC5664547 | biostudies-literature | 2017 Oct

REPOSITORIES: biostudies-literature