Photoelectrode for PEC cell including nanoparticles of metal oxide hydroxide and capping layer of graphene and hybrid organic PEC cell having them

摘要

The present invention relates to a photoelectrode for a photoelectrochemical cell comprising nanoparticles of metal oxide hydroxide and a capping layer of graphene, and a hybrid organic photoelectrochemical cell comprising the same, and more particularly, to a photoactive layer; and a capping layer in which a metal oxide hydroxide nanoparticle coating layer and a graphene coating layer are sequentially stacked for capping the photoactive layer. The modification of the surface structure of the photoelectrochemical cell enhances water wettability and improves the hole-extracting and catalytic properties of the electrode. In particular, reduced graphene oxide (RGO) serves as a charge transport mediator to coordinate hole extraction/transport, and at the same time serves as an excellent surface protective film, protecting the hybrid organic photoelectrochemical cell as a photoelectrode against decomposition. can do.