Facile Integrating Nickel-Iron Layered Double Hydroxides on Silicon Photovoltaic CellName : Aisha Batool
Affliation : Phd scholar
University : National Center from Nanoscience & Technology
Country : China
Abstract Layered double hydroxides (LDH) has been demonstrated to exhibit outstanding catalytic performance due to its unique morphology and abundant active sites. The electrochemical water splitting efficiency of LDH can be boost by interfacing with Si. It is highly challenging to develop high-quality interface between the Si and high turnover layered double hydroxide catalyst due to the open-architecture of layered double hydroxide that is unable to protect Si from electrolyte corrosion. We adopted a facile strategy for integration between polycrystalline Si and NiFe-LDH nanosheet array by engineering partially activated nickel (NiOx) bridging layer. In the developed model system of n+p-Si/Ni/NiOx/NiFe-LDH, the Ni interlayer protects Si against corrosion, and NiOx has a high capacity of hole accumulation as well as strong bonding with the electrodeposited NiFe-LDH due to the similarity in their lattice structures. In addition, the back-illumination configuration allows NiFe-LDH sufficiently thick for more catalytically active sites without compromising Si light absorption. The bridging layer strategy is efficient and simple to smooth charge transfer and make robust contact at the semiconductor/electrocatalyst interface in the solar water-splitting systems. This earth-abundant multicomponent photoanode affords the best photoelectrochemical (PEC) performance among all previous reports.
Keywords: NiFe-LDH, interfacial engineering, Si-based photoanode
She awarded for CAS-TWAS President’s Fellowship in 2014 and received her PhD in Condensed Matter Physics from the National Center from Nanoscience & Technology in 2018. Dr. Aisha Batool’s research interests include semiconductor physics, electrochemical water splitting and photocatalysis. The topic of her PhD Thesis is, “Facile Integration between Nickel-Iron Based Electrocatalysts for Water Splitting”. She has published 16 research articles in ISI Journals and has two patents.