A5083511223- Chalcogenide Semiconductor Thin Films
- Perovskite Materials and Applications
- Advanced Thermoelectric Materials and Devices
- ZnO doping and properties
- Quantum Dots Synthesis And Properties
- GaN-based semiconductor devices and materials
- Plasmonic and Surface Plasmon Research
- Ferroelectric and Negative Capacitance Devices
- Photonic and Optical Devices
- Terahertz technology and applications
- Gas Sensing Nanomaterials and Sensors
- Copper-based nanomaterials and applications
- Supercapacitor Materials and Fabrication
- Ferroelectric and Piezoelectric Materials
- Optical properties and cooling technologies in crystalline materials
- Nanowire Synthesis and Applications
- Engineering and Technology Innovations
- Machine Learning in Materials Science
- Magnetic and transport properties of perovskites and related materials
- Graphene research and applications
- Aluminum toxicity and tolerance in plants and animals
- Advanced Semiconductor Detectors and Materials
- Metal Extraction and Bioleaching
- Plant responses to water stress
- Thermal Radiation and Cooling Technologies
Nanjing University of Science and Technology
2023-2025
Riphah International University
2022-2025
University of Faisalabad
2022-2025
Ministry of Industry and Information Technology
2024
Zhejiang Normal University
2024
Hefei National Center for Physical Sciences at Nanoscale
2018-2023
University of Science and Technology of China
2018-2023
National University of Sciences and Technology
2022
Government College University, Faisalabad
2022
Pakuan University
2019
Abstract N -type polycrystalline SnSe is considered as a highly promising candidates for thermoelectric applications due to facile processing, machinability, and scalability. However, existing efforts do not enable peak ZT value exceeding 2.0 in n SnSe. Here, we realized significant enhancement by leveraging the synergistic effects of divacancy defect introducing resonance level into conduction band. The increased density states resulting from tungsten boost Seebeck coefficient. combination...
Abstract Reconfigurable intelligent surfaces (RISs) are envisioned to transform the propagation space into a smart radio environment (SRE) realize diverse applications of sixth‐generation (6G) wireless communication. By smartly tuning massive number elements via controller, an RIS can passively phase‐shift electromagnetic (EM) waves enhance system performance. The absence radio‐frequency (RF) chains makes energy‐efficient and cost‐effective solution for future networks. In this paper,...
In this article, we have presented a low-cost hydrothermal approach to enhance the thermoelectric performance of ZnO nanostructures via modulation doping. For purpose, prepared series pure and X:ZnO (X = Ni & Mn) samples. The Seebeck value Mn-doped samples possesses maximum coefficient −36 μV/°C compared Ni-doped (−22 −27 μV/°C) at room temperature. highest for is related formation mid-gap energy band states due substitution Mn2+ with Zn2+. These mid-band induce an imbalance in DOS, by...
An extraordinary average ZT of ∼1 as well a high peak 1.44 is realized in n-PbSe integrated with quantum dots.
To date, several portable, wearable, and even implantable electronics have been incorporated into ultracompact devices as miniaturized energy-autonomous systems (MEASs). Electrostatic supercapacitors could be a promising energy storage component for MEASs due to their high power density ultrashort charging time. Several dielectric materials, including ceramics, polymers, glass, studied applications. However, large thickness (in micrometers or larger), these materials are inappropriate use...
Electrochemical capacitors are known for their fast charging and superior energy storage capabilities have emerged as a key solution efficient sustainable power management. This article comprehensively explores the fundamental principles, architectural advancements, material innovations underpinning supercapacitor technology. It covers evolution of performance, comparison pseudocapacitors, double‐layer capacitors, electrolytes, integration innovative nanostructured materials, such carbon...
In the present work, Zinc-oxide nanostructures and Ce/Zinc-oxide nanopetals were synthesized by a new environmentally friendly green synthesis method using Withania coagulans plant. Cerium nitrate Ce(NO3)3 zinc Zn(NO3)2 used as precursors. The prepared characterized X-ray diffraction (XRD), scanning electron microscopy (SEM), ultraviolet spectroscopy (UV–vis). Crystal planes (100), (002), (101), (102), (110), (103), (200), (112) (201) at 2θ 31.75°, 34.35°, 36.2°, 47.55°, 56.6°, 62.75°,...
Owing to its low resistivity, high transmittance, and tunable optical band gap, ZnO is of great interest for optoelectronic applications. Herein, the sol–gel technique was used synthesize un-doped zirconium-doped zinc oxide (ZZO) nanostructures with different concentrations Zirconium (Zr). X-ray diffraction (XRD), scanning electron microscope (SEM), Raman spectroscopy, Fourier transform infrared spectroscopy (FTIR), UV-Vis photoluminescence (PL) measurements were investigate influence Zr...
Abstract In ZnTe, longitudinal optical (LO) phonons are strongly coupled with free exciton via long‐range order Froehlich interactions. this study, we ex situ and in monitored the effect of annealing temperature on exciton–phonon (e‐ph) coupling vacuum evaporated ZnTe thin films by resonance Raman scattering experiment. The 350°C air‐annealed film exhibited strong e‐ph n LO up to sixth were observed spectrum. Moreover, a series ( − 1)LO + TO 1)LO‐TO combination phonon modes appeared at low...
Abstract Low‐energy optical phonons with energy in the order of that acoustic are readily populated at room temperature, and therefore, they play a key role thermal, electronic, thermo‐electric fundamental processes solid material. High‐quality crystalline cadmium sulfide (CdS) nanowires diameter several tens nanometer length up to micrometers (3–5 μm) demonstrate strong exciton–phonon coupling. This coupling interaction allows us observe low‐energy their anharmonic couplings high‐energy...
Due to their unusual features in condensed matter physics and applicability optical optoelectronic applications, three-dimensional Dirac semimetals (3D DSMs) have garnered substantial interest recent years. In contrast monolayer graphene, 3D DSM exhibits linear band dispersion despite its macroscopic thickness. Therefore, being a bulk material, it is easy make nanostructures with DSM, just as one normally does metals such gold silver. Among DSMs, cadmium arsenide (Cd3As2) quite famous...
Zinc sulfide (ZnS) thin films with variable structural, optical, electrical, and thermoelectric properties were obtained by changing the source-to-substrate (SSD) distance in physical-vapor-thermal-coating (PVTC) system. The crystallized into a zinc-blende cubic structure (111) preferred orientation. had wide 3.54 eV optical band gap. High-quality homogenous at 60 mm SSD. sheet resistance resistivity of decreased from 1011 to 1010 Ω/Sq. 106 105 Ω-cm, when SSD was increased 20 mm,...
The fluorite‐structural ferroelectric (FE) and antiferroelectric (AFE) materials exhibit promising applications in memories energy storage devices. However, understanding frequency‐dependent polarization phase switching, which is very important for electronic device performance, still a critical problem. Herein, switching of the Si‐doped HfO 2 ‐based metal–dielectric–metal capacitors with FE AFE‐like thin films, respectively, are investigated. Kolmogorov–Avrami–Ishibashi (KAI)...
Abstract Surface-enhanced Raman spectroscopy (SERS) technique can achieve an ultra-high sensitivity (i.e., down to the single-molecule level) via coinage-metal nanostructures such as silver, gold, copper, etc. In this work, a geometry is proposed that consists of silver nanoparticles (AgNPs) decorated on cadmium chloride (CdCl 2 ) annealed sulfide (CdS) thin film glass substrate. A strong SERS enhancement in AgNPs CdCl CdS films achieved, which twelve times larger than scattering from bare...
InGaN quantum wells (QWs) grown on c-plane sapphire substrate experience strain due to the lattice mismatch. The generates a strong piezoelectric field in QWs that contributes THz emission under ultrafast excitation. Physical parameters such as QW width, period number, and Indium concentration can affect strength of result emission. Experimental pump fluence, laser energy, excitation power, polarization angle, incident angle be tuned further optimize This review summarizes effects physical...