A5019691981- 2D Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Semiconductor materials and interfaces
- Graphene research and applications
- Semiconductor Quantum Structures and Devices
- Nonlinear Optical Materials Studies
- Advanced Photocatalysis Techniques
- ZnO doping and properties
- Nonlinear Optical Materials Research
- Phase-change materials and chalcogenides
- Nanowire Synthesis and Applications
- Advanced Fiber Laser Technologies
- Silicon and Solar Cell Technologies
- Gold and Silver Nanoparticles Synthesis and Applications
- Topological Materials and Phenomena
- MXene and MAX Phase Materials
- Gas Sensing Nanomaterials and Sensors
- Perovskite Materials and Applications
National Institute of Science Education and Research
2022-2024
Homi Bhabha National Institute
2022-2024
Layered transition-metal dichalcogenides (TMDs) are gaining significant attention because they exhibit unconventional magnetic properties due to crystal imperfections in their usually nonmagnetic 2D structure and pertinent for the development of spintronic devices. This work aims investigate response self-engineered Se-deficient TiSe2 thin films, synthesized using chemical vapor deposition. We demonstrate tunability ferromagnetic order with introduction Au atoms low-energy Au-ion...
Abstract The combination of 2D materials and noble metallic nanostructure is becoming an attractive research domain for label-free, highly sensitive surface-enhanced Raman spectroscopy (SERS) applications. This study demonstrated photocatalysis degradation SERS enhancements organic fluorophore (Rhodamine 6G) on two-dimensional (2D) TiSe 2 using spectroscopy. Au nanoparticles (NPs) were decorated thin films by thermal annealing at variable temperatures. selective deposition NPs the hexagonal...
Two-dimensional titanium diselenide (TiSe2) thin films are excitonic insulators characterized by a charge density wave (CDW) order and gap below thermal transition scale TCDW ≈ 200 K. Above K, the collapses to small finite value, incoherent short-range CDW correlations persist as precursors low-temperature order, over temperature window. Here, we employ low-energy ion implantation introduce Au, disorder potential, in TiSe2 control magnitude beam fluence. By analysis of change in-plane...
Abstract Breaking time‐reversal symmetry through magnetic impurities has been a useful strategy for achieving exotic physical phenomena in topological insulators long time. In contrast, reports on ferromagnetism by introducing non‐magnetic elements are very scarce. The present article illustrates Au ion implantation as an alternative tool to study the structural and properties Bi 2 Se 3 nanocrystals grown chemical vapor deposition. as‐grown pristine exhibits triangular hexagonal plate‐like...
The hydrothermally grown SnO2 hierarchical trichome nano-flowers (T-NFLs) solar cell performance over nano-flakes (NFs) has been investigated. structural characterizations reveal superior lattice stain and free energy in tetragonal phase of the T-NFLs NFs. band gap widening defect-dominated luminescence visible range show quantum size effect. In comparison with NFs, dark Schottky current-voltage characteristics improved barrier height (0.82 eV) ideality factor 3.52. exhibit enhanced under...
The hydrothermally grown SnO2 hierarchical trichome nano-flowers (T-NFLs) solar cell performance over nano-flakes (NFs) has been investigated. structural characterizations reveal superior lattice stain and free energy in tetragonal phase of the T-NFLs NFs. band gap widening defect-dominated luminescence visible range show quantum size effect. In comparison with NFs, dark Schottky current-voltage characteristics improved barrier height (0.82 eV) ideality factor 3.52. exhibit enhanced under...
We present a detailed investigation on the impact of thermal annealing third-order nonlinear optical (NLO) properties sputtered WSe2 thin-films. The process results in an appreciable change morphology and texture films that is governed by temperature duration annealing. These modifications are apparent from electron micrographs as well X-ray diffraction Raman spectrum. visible absorption spectroscopy point towards gradual shrinkage electronic bandgap which motivated us to explore NLO...
Layered transition metal dichalcogenides (TMDs) are attracting increasing attention because they exhibit unconventional magnetic properties due to crystal imperfections in their usually non-magnetic 2D structure. This work aims investigate the response of self-engineered Se deficient TiSe$_2$ thin films, synthesized using chemical vapour deposition. We demonstrate tunability ferromagnetic order with introduction Au atoms low energy ion implantation, which works as a controlling knob vary...