Synthesizing Low-dimensional Semiconductors
Identifying new material compositions and understanding their phase formation mechanism is the fundamental step to synthesize new materials. Low-dimensional semiconductors ranging from 0D to 1D and 2D will be identified to design the experimental methods for achieving high phase purity. Experimental routes from chemical synthesis route to vapor-based techniques will be explored. Materials characterization for structural, optical, and electronic properties towards optoelectronic devices will form the first thrust of the LDS lab. Identifying a cost-effective approach to scale-up materials synthesis without losing the optoelectronic property will be the prime goal.
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Light-Matter Interactions
Excitonic semiconductors ranging in different dimensions from 0D (quantum dots) to 1D (carbon nanotubes) and 2D (transition metal dichalcogenides and perovskites) possess unique optical and electronic properties. Using the concept of strong light-matter interactions, light can be used to modulate the intrinsic optoelectronic property of these semiconductors. Such phenomenon is distinct from the concepts on the quantum confinement (size) effect and composition modulation. We will explore the concept of strong coupling to further untap the intrinsic materials capabilities towards disruptive technologies.
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Anantharaman et al,Light: Science & Applications (2024)
Anantharaman et al, ACS Nano (2021)
Optoelectronic Devices
Beyond the synthesis of low-dimensional semiconductors and identifying new optical properties, using simulation tools to design new devices will be the quest for engineers. With the understanding gained from the property of the materials, engineering them to the desired application of interest forms the ultimate thrust of the lab. Applications ranging from classical optoelectronic devices to quantum technologies, fall within the scope of interest of this lab. To name a few applications - light emitting devices (LEDs), lasers, and photodetectors forms the foundation for exploring novel photophysics and to integrate the concept of light-matter interaction. Designing new device concepts to leverage the intrinsic material properties will be pursued.
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Hu et al, Advanced Optical Materials (2023)