Renewable Energy, Vol.83, 447-454, 2015
Photoactivity of MWCNTs modified alpha-Fe2O3 photoelectrode towards efficient solar water splitting
MWCNTs (Multiwalled Carbon Nanotubes) modified alpha-Fe2O3 (hematite) photoelectrodes have been investigated for their possible application in hydrogen generation via photoelectrochemical (PEC) splitting of water. Enhanced photoresponse seen in comparison to the pristine alpha-Fe2O3 films is credited to the effective charge facilitation and charge separation provided by MWCNT conducting support. 0.2 wt % MWCNTs modified alpha-Fe2O3 thin film exhibited the maximum photocurrent density of 2.8 mA/cm(2) at 0.75 V/SCE. Measured values of flat band potential, donor density, resistance, Applied bias photon-to-current efficiency (ABPE) and Incident-photon-to current-conversion efficiency (IPCE) support the observed enhancement in photocurrent. (c) 2015 Elsevier Ltd. All rights reserved.