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Our Vision
Our Vision
We design and grow optimized materials for Sustainable Energy and Electronic Devices (SEED).
We design and grow optimized materials for Sustainable Energy and Electronic Devices (SEED).
Every application places distinct demands on its materials. Because a device operates as a stack of functional layers, meeting these demands requires addressing the material of each layer together with its crystal orientation, phase, and defect chemistry, as well as the interfaces between them. We therefore work across metal oxides, halide perovskites, organic semiconductors, and 2D chalcogenides, designing the material best suited to each application.
Every application places distinct demands on its materials. Because a device operates as a stack of functional layers, meeting these demands requires addressing the material of each layer together with its crystal orientation, phase, and defect chemistry, as well as the interfaces between them. We therefore work across metal oxides, halide perovskites, organic semiconductors, and 2D chalcogenides, designing the material best suited to each application.
To realize these designs, we use physical vapor deposition (PLD, sputtering, e-beam evaporation, and glancing-angle deposition), atomic layer deposition (ALD), solution-based processing (solvothermal and colloidal synthesis, self-assembly, spin coating, and electrodeposition), and post-growth processing (annealing and phase stabilization).
To realize these designs, we use physical vapor deposition (PLD, sputtering, e-beam evaporation, and glancing-angle deposition), atomic layer deposition (ALD), solution-based processing (solvothermal and colloidal synthesis, self-assembly, spin coating, and electrodeposition), and post-growth processing (annealing and phase stabilization).
We apply this approach to four fields: photoelectrochemical systems, memory devices, gas sensors, and transistors. Ultimately, we seek to understand how surface and interface structure governs charge transfer and switching, and to translate this understanding into sustainable energy and electronic technologies.
We apply this approach to four fields: photoelectrochemical systems, memory devices, gas sensors, and transistors. Ultimately, we seek to understand how surface and interface structure governs charge transfer and switching, and to translate this understanding into sustainable energy and electronic technologies.
Our Research
Our Research
1. Photoelectrochemical Systems
1. Photoelectrochemical Systems
Sunlight can directly drive chemical reactions that produce hydrogen, ammonia, and value-added chemicals.
We design metal oxide, halide perovskite, and organic semiconductor photoelectrodes and pair them with facet- and composition-controlled catalysts for efficient and selective solar-driven conversion.
2. Memory Devices
2. Memory Devices
Energy-efficient computing calls for memory that stores multiple states at low operating voltage.
We develop ferroelectric oxide thin films and self-assembled nanocrystal memristors for multi-state memory and artificial synapses.
3. Gas Sensors
3. Gas Sensors
Air quality monitoring, industrial safety, and breath diagnostics all require sensing layers that respond to trace gases (NO₂, NH₃ etc.) with high sensitivity, selectivity, and stability.
We grow porous oxide nanostructures and explore halide perovskite and organic semiconductor films, tailoring gas diffusion and surface reactions.
4. Next-Generation Transistors
4. Next-Generation Transistors
As silicon approaches its scaling limits, 2D layered semiconductors offer ultrathin, high-mobility channels.
We grow various 2D chalcogenide thin films (MoS₂, VSe₂, HfSe₂, Bi₂O₂Se, InSe, etc.) using a hybrid PLD system, and engineer their contacts and passivation layers.
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