A5008451945- Advanced Photocatalysis Techniques
- Perovskite Materials and Applications
- ZnO doping and properties
- Semiconductor materials and interfaces
- Quantum Dots Synthesis And Properties
- Multiferroics and related materials
- 2D Materials and Applications
- Gas Sensing Nanomaterials and Sensors
- Conducting polymers and applications
- Surface and Thin Film Phenomena
- Ga2O3 and related materials
- Chalcogenide Semiconductor Thin Films
- Copper-based nanomaterials and applications
- Electron and X-Ray Spectroscopy Techniques
- Graphene research and applications
- Magnetic properties of thin films
- Electronic and Structural Properties of Oxides
- Magnetic Properties and Synthesis of Ferrites
- Covalent Organic Framework Applications
- MXene and MAX Phase Materials
- Iron oxide chemistry and applications
- Solid-state spectroscopy and crystallography
- Thin-Film Transistor Technologies
- Copper Interconnects and Reliability
- Silicon and Solar Cell Technologies
University of Pennsylvania
2020-2024
Eindhoven University of Technology
2023-2024
Materials Science & Engineering
2019-2023
UNSW Sydney
2019-2023
Indian Institute of Technology Delhi
1983-2020
National University of Science and Technology
2018
Indian Institute of Technology Indore
1986-2013
University of Wisconsin–Madison
1991-1998
Institute of Structure of Matter
1993
Abstract The extraordinary electronic, optical, and mechanical characteristics of 2D materials make them promising candidates for optoelectronics, specifically in infrared (IR) detectors owing to their flexible composition tunable optoelectronic properties. This review presents the recent progress IR composed hybrid structures, including graphene, black phosphorous, transition metal dichalcogenides, halide perovskite as well other new layered heterostructures. focus is on short‐wave,...
Harvesting energy from the ambient mechanical by using flexible piezoelectric nanogenerator is a revolutionary step toward achieving reliable and green source. Polyvinylidene fluoride (PVDF), polymer, can be potential candidate for if its property enhanced. In present work, we have shown that polar crystalline β ‐phase of PVDF, which responsible property, enhanced 48.2% to 76.1% just adding ZnO nanorods into PVDF matrix without any or electrical treatment. A systematic investigation PVDF‐ZnO...
Organic–inorganic hybrids, which synergize the merits of organic and inorganic materials, have emerged as a new class highly versatile functional materials with tailored properties enhanced energy conversion efficiency. In this Focus Review, state-of-the-art results on organic–inorganic used for water splitting generation hydrogen clean renewable fuel, are concisely summarized. Two classes hybrid i.e., nanocomposites halide perovskites, reviewed compared designing photoelectrochemical cells....
Abstract Perovskite oxides such as PbZr x Ti 1− O 3 (PZT) and BaTiO show excellent dielectric, piezoelectric, pyroelectric, ferroelectric properties simultaneously have been widely used in capacitor, sensor, actuator, motor, surface acoustic wave devices, energy storage applications. Recently, a variety of solution‐processed halide perovskite materials discovered to exhibit fascinating high charge mobility, strong light absorption, even ferroelectricity. In this review, the recent progress...
Despite the exceptional performance of hybrid perovskites in photovoltaics, their susceptibility to ambient factors, particularly humidity, gives rise well-recognized stability issue. In present work, microstripes CH3NH3PbI3 are fabricated on flexible substrates, and they exhibit much larger response relative humidity (RH) levels than continuous films single crystals. The resistance decreases by four orders magnitude changing RH level from 10 95%. Fast recovery time 100 500 ms, respectively,...
We report the coupling of a CdS/CoFe<sub>2</sub>O<sub>4</sub> core/shell nanorod heterostructure onto 2D platform reduced graphene oxide (RGO) sheets in which role RGO as visible light responsive photosensitizer is shown for enhanced photocatalytic activity.
Abstract Metal halide perovskite solar cells have an appropriate bandgap (1.5–1.6 eV), and thus output voltage (>1 V), to directly drive water splitting. Despite significant progress, their moisture sensitivity still hampers application for integrated monolithic devices. Furthermore, the prevalence of use noble metals as co‐catalysts existing perovskite‐based devices undermines low‐cost H 2 production. Here, a architecture stable with earth‐abundant is reported, demonstrating unassisted...
The interest in two-dimensional and layered materials continues to expand, driven by the compelling properties of individual atomic layers that can be stacked and/or twisted into synthetic heterostructures. plethora electronic as well emergence many different quasiparticles, including plasmons, polaritons, trions excitons with large, tunable binding energies all controlled modulated through electrical means has given rise device applications. In addition, these exhibit both room-temperature...
Very high surface area, self-assembled, highly crystalline mesoporous SrTiO3 (STO) thin films were developed for photoelectrochemical water splitting. Much improved performance of these compared to planar STO and any other form such as single crystal samples nanostructures was demonstrated. The resulted from very large area optimization carrier concentration.
Interlayer excitons (IXs) in two-dimensional (2D) heterostructures provide an exciting avenue for exploring optoelectronic and valleytronic phenomena. Presently, research is limited to transition metal dichalcogenide (TMD) based 2D heterostructure samples, which require strict lattice (mis) match interlayer twist angle requirements. Here, we explore a system with experimental observation of spin-valley layer coupling realize helicity-resolved IXs, without the requirement specific geometric...