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Fabrication of ferric oxide/reduced graphene oxide/cadmium sulfide heterostructure photoelectrode for enhanced photoelectrochemical performance
Author(s) -
Bai HongYe,
Chen Chao,
Wu Hua,
Da Zulin,
Fan Weiqiang
Publication year - 2016
Publication title -
crystal research and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.377
H-Index - 64
eISSN - 1521-4079
pISSN - 0232-1300
DOI - 10.1002/crat.201600228
Subject(s) - graphene , oxide , x ray photoelectron spectroscopy , raman spectroscopy , materials science , photocurrent , heterojunction , transmission electron microscopy , scanning electron microscope , chemical engineering , nanotechnology , optoelectronics , optics , composite material , physics , engineering , metallurgy
A novel high‐efficiency photoelectrode (Fe 2 O 3 /reduced graphene oxide/CdS) built from heterostructure and conductive scaffold has been successfully designed and synthesized. Reduced graphene oxide works as a “bridge” which benefits for electron and hole transport. The obtained heterostructure photoelectrodes were systematically characterized by X‐ray diffraction (XRD), transmission electron microscopy (TEM), scanning electron microscopy (SEM), Raman spectroscopy, and X‐ray photoelectron spectroscopy (XPS). The photoconversion efficiency (η) and photocurrent densities vs. time (I‐t) curves responding to monochromatic lights have been further investigated in‐depth, which reveals that introduction of CdS and reduced graphene oxide played an important role in the enhancement of photoelectrochemical performance.