NDLI: Structural, optical and photo-electrochemical properties of hydrothermally grown ZnO nanorods arrays covered with α-Fe<sub>2</sub>O<sub>3</sub> nanoparticles

Content Provider	Royal Society of Chemistry (RSC)
Author	Chakraborty, Mohua Udayabhanu, G. Biswas, Amrita Thangavel, R. Roy, Dhrubojyoti
Copyright Year	2016
Abstract	A low cost hydrothermal method and subsequent wet-chemical process has been used for the preparation of a ZnO nanorod (NR) array film grown on tin doped indium oxide (ITO) coated glass substrates, post decorated by α-Fe2O3 nanoparticles (NPs). The effect of the amount of α-Fe2O3 NPs on the properties of ZnO NRs such as electron scattering, surface roughness, photo-charge transport and interface recombination has been investigated. Furthermore, the optimized α-Fe2O3 NPs@ZnO exhibited enhanced light absorption, charge separation and charge transport properties, as characterized by UV-vis absorption spectra and the photo-electrochemical characterization by Linear Sweep Voltammetry (LSV) and Electrochemical Impedance Spectroscopy (EIS). An optimum amount of α-Fe2O3 NPs on the ZnO NRs enhanced the photocurrent density by 163% and the photo-conversion efficiency by more than 2.5 times compared to those of the bare ZnO NRs. These results indicated that the prepared α-Fe2O3 NPs@ZnO NRs could serve as an efficient photo-electrode material for photo-electrochemical cells.
Starting Page	75063
Ending Page	75072
Page Count	10
File Format	HTM / HTML PDF
ISSN	20462069
Volume Number	6
Issue Number	79
Journal	RSC Advances
DOI	10.1039/c6ra15752a
Language	English
Publisher	Royal Society of Chemistry
Access Restriction	Open
Subject Keyword	Dielectric spectroscopy Electrochemical Impedance Spectroscopy Photocurrent Hydrothermal circulation Carrier generation and recombination Tin Voltammetry Indium LSV
Content Type	Text
Resource Type	Article
Subject	Chemistry Chemical Engineering

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