A5064213134- Ferroelectric and Piezoelectric Materials
- Perovskite Materials and Applications
- Advancements in Solid Oxide Fuel Cells
- Magnetic and transport properties of perovskites and related materials
- Solid-state spectroscopy and crystallography
- Multiferroics and related materials
- Dielectric properties of ceramics
- Electronic and Structural Properties of Oxides
- Thermal Expansion and Ionic Conductivity
- Chalcogenide Semiconductor Thin Films
- Acoustic Wave Resonator Technologies
- Dielectric materials and actuators
- Fuel Cells and Related Materials
- Glass properties and applications
- Electrocatalysts for Energy Conversion
- Phase-change materials and chalcogenides
- ZnO doping and properties
- Magneto-Optical Properties and Applications
- Semiconductor materials and devices
- Microwave Dielectric Ceramics Synthesis
- Metal-Organic Frameworks: Synthesis and Applications
- Supercapacitor Materials and Fabrication
- Metamaterials and Metasurfaces Applications
- Conducting polymers and applications
- Advanced battery technologies research
Jaypee University of Information Technology
2025
Banaras Hindu University
2016-2024
Indian Institute of Technology BHU
2017-2024
Bhabha Atomic Research Centre
2023
Indian Institute of Technology Dhanbad
2018
Jaypee Institute of Information Technology
2012-2016
Guru Gobind Singh Indraprastha University
2013-2015
Delhi Technological University
2011-2014
Abstract Lead-free perovskite halide CsSnI_{3} has emerged as a promising material for optoelectronic applications due to its direct bandgap (1.3–1.4 eV), high charge carrier mobility, and strong visible-spectrum absorption. Among polymorphs, the green phase, with favorable of \sim1.24 eV, demonstrates enhanced structural stability resistance phase degradation under ambient conditions. In this study, we investigate polymorph observe pyroelectric behavior, indicative ferroelectric-like...
Tuning the electronic band gaps of semiconductors is at core current research on optoelectronic materials and devices. For ZnO, many studies have tried to enhance gap by chemical substitution, but lattice mismatch often thwarts that approach. Instead, this study looks dimensional reduction. Experiments first-principles calculations reveal not only thickness also...
Plasmonic catalysis triggers the dissociation of H2 or adsorbed O2 (sluggish processes) under continuous wave excitation via plasmon decay. This is coupled to interband intraband d-band sp-band, respectively, levels above fermi level metals. Here, we have studied plasmonic and photocatalytic behavior in an environment friendly medium with AM 1.5 G sunlight CuO/Cu2O thin films fabricated by pulsed laser deposition technique vacuum varying thickness. We achieved ∼0.59 kmol h−1g−1H2 production...
Abstract This study investigates the development and performance evaluation of a bifunctional catalyst tailored for unitized regenerative fuel cells (URFCs), capable facilitating both oxygen evolution reaction (OER) hydrogen (HER) in cell electrolyzer modes. The primary challenge addressed is creation electrocatalysts exhibiting high activity corrosion resistance reduction water oxidation at electrode. A novel structure based on La 0.5 Sr Fe Ti O 3 (LSFT), i.e. LSFT/ZnO/LSFT with thickness...
BiFeO3 (BFO) systems co-modified with Ti, Sm and Sm-Ti have been investigated for piezoelectricity together dielectric multiferroic properties. Structural studies revealed the coexistence of orthorhombic rhombohedral (R3c) phases x > 0.12. Impurity were shown to hardly any effect on remanent magnetization, which rather depends Fe-O-Fe bond angle. The loss was reduced considerably by substitution. A correlation between piezoelectric coefficient tetragonality observed in these samples. BFO...
The paradigm that chemical synthesis reduces the sintering temperature as compared to solid state seems be violated in case of PrBaCo2O6-δ double perovskite. temperatures for pure phase samples synthesized through route (P-SSR) and auto-combustion (P-ACR) were found 1050 1150 °C, respectively. porous microstructure P-SSR is suitable SOFC cathode materials while P-ACR pore free. High-resolution transmission electron microscopy, Raman scanning tunneling microscopy studies reveal there crystal...
Being a charge transfer Mott insulator with low metal-insulator temperature, disordered LaFeO3 (as an air electrode) is potential material for electrochemical engineering. High electronic conductivity and inexpensive catalytic activity are the prime requisites electrode materials. Here, we systematically substituted hole (Sr) at La-site electron (Ti) Fe-site. Our objective here twofold, first to get improved behavior understand role of bandgap All investigated samples oxygen-rich show...