A5065997607- 2D Materials and Applications
- Perovskite Materials and Applications
- Graphene research and applications
- Nanowire Synthesis and Applications
- MXene and MAX Phase Materials
- Laser-Matter Interactions and Applications
- Nonlinear Optical Materials Studies
- Chalcogenide Semiconductor Thin Films
- Quantum and electron transport phenomena
- Advanced biosensing and bioanalysis techniques
- Molecular Junctions and Nanostructures
- Advanced Fiber Laser Technologies
- Topological Materials and Phenomena
Indian Institute of Technology Mandi
2021-2025
The intrinsic properties of two-dimensional (2D) transition-metal dichalcogenides (TMDs) are profoundly influenced by their interface conditions. Engineering the TMD/substrate is crucial for harnessing unique optoelectronic 2D TMDs in device applications. This study delves into how transient optical monolayer (ML) MoS2 affected substrate and film preparation processes, specifically focusing on generation recombination pathways photoexcited carriers. Our experimental theoretical analyses...
Layered materials can possess valleys that are indistinguishable from one another except for the momentum. These individually addressable in momentum space at K and K' points first Brillouin zone. Such valley addressability opens up possibility of utilizing state quasi-particles as a completely new paradigm quantum classical information processing. This review focuses on physics behind polarization talks about carriers degree freedom (VDF) layered materials. Then we provide detailed survey...
Two-dimensional (2D) transition-metal dichalcogenides (TMDCs) have shown promise for a variety of optoelectronic applications due to wide range optical, electrical, and mechanical properties. Large-area chemical vapor deposition (CVD)-grown TMDC flakes could be useful in such devices. However, the defects present large-area can significantly influence carrier dynamics transport Here, ultrafast monolayer tungsten disulfide (WS2) covering large area substrate was explored using transient...
Two-dimensional (2D) transition metal dichalcogenides (TMDs) and perovskites hold substantial promise for various optoelectronic applications such as light emission, photodetection, energy harvesting. However, each of these materials possesses certain limitations that can be overcome by synergistically combining them to form heterostructures, thereby unveiling intriguing optical properties. In this study, we present an uncomplicated technique crafting a van der Waals (vdW) heterojunction...
Utilization of the excess energy photoexcitation that is otherwise lost as thermal effects can improve efficiency next-generation light-harvesting devices. Multiple exciton generation (MEG) in semiconducting materials yields two or more excitons by absorbing a single high-energy photon, which break Shockley-Queisser limit for conversion photovoltaic Recently, monolayer transition metal dichalcogenides (TMDs) have emerged promising because their high absorption coefficient. Here, we report...
Tin (II) monosulfide (SnS) has attracted considerable attention in emerging photonics and optoelectronics because of high carrier mobility, large absorption coefficient, anisotropic linear nonlinear optical properties, long-time stability. In this Letter, we report third-order refraction SnS quantum dots (QDs). Under excitation with 800-nm femtosecond pulses, QDs exhibit saturable (saturation intensity ∼ 47.69 GW/cm2) positive refractive nonlinearity (nonlinear coefficient 1.24 × 10-15...
Utilizing the excess energy of photoexcitation that is otherwise lost as thermal effects can improve efficiency next-generation light-harvesting devices. Multiple exciton generation (MEG) in semiconducting materials yields two or more excitons by absorbing a single high-energy photon, which break Shockley-Queisser limit for conversion photovoltaic Recently, monolayer transition metal dichalcogenides (TMDs) have emerged promising because their high absorption coefficient. Here, we report...