A5009690442- Semiconductor materials and devices
- Semiconductor materials and interfaces
- Metal and Thin Film Mechanics
- Integrated Circuits and Semiconductor Failure Analysis
- High-Temperature Coating Behaviors
- Quantum Dots Synthesis And Properties
- Ion-surface interactions and analysis
- Chalcogenide Semiconductor Thin Films
- Silicon Nanostructures and Photoluminescence
- Advancements in Semiconductor Devices and Circuit Design
- Electronic and Structural Properties of Oxides
- 2D Materials and Applications
- Copper Interconnects and Reliability
- Advanced Photocatalysis Techniques
- Covalent Organic Framework Applications
- Perovskite Materials and Applications
- Advanced materials and composites
- Copper-based nanomaterials and applications
- Additive Manufacturing Materials and Processes
- Particle Dynamics in Fluid Flows
- Graphene research and applications
- Advanced Electron Microscopy Techniques and Applications
- Silicon and Solar Cell Technologies
- Metal-Organic Frameworks: Synthesis and Applications
- Surface Treatment and Residual Stress
Agency for Science, Technology and Research
2016-2025
Institute of Materials Research and Engineering
2016-2025
A*STAR Graduate Academy
2019
National University of Singapore
2000-2011
Nanyang Technological University
2008-2011
Suzhou Institute of Nano-tech and Nano-bionics
2011
Chinese Academy of Sciences
2011
Here, we report a significant improvement of the photoelectrochemical (PEC) properties hematite (α-Fe2O3) to oxidize water by doping with manganese. Hematite nanorods were grown on fluorine-treated tin oxide (FTO) substrate hydrothermal method in presence Mn. Systematic physical analyses performed investigate Mn samples. Fe2O3 5 mol % treatment showed photocurrent density 1.6 mA cm–2 (75% higher than that pristine Fe2O3) at 1.23 V versus RHE and plateau 3.2 1.8 1 M NaOH electrolyte solution...
In a search for Pb-free photovoltaic materials, double perovskite Cs2AgSbBr6 with an indirect optical bandgap of 1.64 eV has been synthesized. Single crystal X-ray diffraction determined the space group as Fm3[combining macron]m = 11.1583(7) Å. The black, as-synthesised compound turned brown after heat treatment at 480 K while symmetry and crystallinity were preserved. photoelectron spectroscopy indicated existence Sb5+ in black crystals, suggesting that dark colour arises from Sb3+-Sb5+...
The rational design of novel hierarchical MoS<sub>2</sub>/CoS<sub>2</sub> heterogeneous nanotube arrays as self-supported and pH-universal electrocatalysts for efficient HER.
Abstract The electrochemical conversion of nitrate to ammonia is a way eliminate pollutant in water. Cu-Co synergistic effect was found produce excellent performance generation. However, few studies have focused on this high-entropy oxides. Here, we report the spin-related nitrate-to-ammonia using oxide Mg 0.2 Co Ni Cu Zn O. In contrast, Li-incorporated MgCoNiCuZnO exhibits inferior performance. By correlating electronic structure, that spin states are crucial for pair with high O can...
Controlling novel morphologies and developing effective doping strategies are two important tasks for advancing ZnO-based nanomaterials. We have grown vertically aligned Cu-doped ZnO nanonails nanoneedles observed a continuous evolution between various morphologies. Selecting source compositions regulating vapor gas pressures modify the Ehrlich−Schwoebel energy barrier surface diffusion determine X-ray diffraction study indicates decrease in lattice parameter after Cu doping....
Abstract We have investigated the impact of Cu 2 ZnSnS 4 -Molybdenum (Mo) interface quality on performance sputter-grown (CZTS) solar cell. Thin film CZTS was deposited by sputter deposition technique using stoichiometry quaternary target. Formation molybdenum sulphide (MoS x ) interfacial layer is observed in grown films after sulphurization. Thickness MoS found ~142 nm when (550 thick) sulphurized at 600 °C. significantly increased to ~240 case thicker (650 nm) under similar sulphurization...
MoS<sub>2</sub>/WS<sub>2</sub>2D heterostructures grown by<italic>in-situ</italic>reactive sputtering deposition exhibit a strong interlayer coupling and associated exciton relaxation at the interface.
Electronic regulation and structural engineering at the atomic level of electrocatalysts is vital importance to a highly efficient oxygen evolution reaction (OER).
Herein, we have successfully synthesized binary Ag2Se, composite Ag0:Ag2Se, and ternary Cu+:Ag2Se through an ambient aqueous-solution-based approach in a one-pot reaction at room temperature atmospheric pressure without involving high-temperature heating, multiple-processes treatment, organic solvents/surfactants. Effective controllability over phases compositions/components are demonstrated with feasibility for large-scale production exquisite alteration parameters especially pH enhancing...
Abstract Thin film composite (TFC) hollow fiber membranes with ultrathin selective layer are desirable to maximize the gas permeance for practical applications. Herein, a bio‐inspired strategy is proposed fabricate sub‐100‐nm via tree‐mimicking polymer network amphipathic components featuring multifunctionalities. The hydrophobic polydimethylsiloxane (PDMS) brushes act as roots that can strongly cling gutter layer, PDMS crosslinkers function xylems enable fast transport, and hydrophilic...
Potassium (K) post-treatment on CIGSSe has been shown to yield the highest efficiency reported date. However, very little is known effect of K doping in CZTSSe and mechanism behind improvement. Here we reveal by which enhances charge separation CZTSSe. We show that accumulates at CdS/CZTSSe, passivating recombination front interface improving carrier collection. also found accumulate CZTSSe/Mo facilitates diffusion Cd into absorber affects morphology grain growth As revealed C–V, external...