A5100723785- Ferroelectric and Piezoelectric Materials
- Acoustic Wave Resonator Technologies
- Microwave Dielectric Ceramics Synthesis
- Multiferroics and related materials
- ZnO doping and properties
- Gas Sensing Nanomaterials and Sensors
- Dielectric properties of ceramics
- Dielectric materials and actuators
- Chalcogenide Semiconductor Thin Films
- Electrical and Thermal Properties of Materials
- Magnetic and transport properties of perovskites and related materials
- Welding Techniques and Residual Stresses
- Perovskite Materials and Applications
- Transition Metal Oxide Nanomaterials
- Quantum Dots Synthesis And Properties
- Advanced Thermoelectric Materials and Devices
- X-ray Diffraction in Crystallography
- Graphene research and applications
- Ga2O3 and related materials
- Crystallization and Solubility Studies
- Aluminum Alloy Microstructure Properties
- Quantum and electron transport phenomena
- Conducting polymers and applications
- Advanced Welding Techniques Analysis
- Aluminum Alloys Composites Properties
State Key Laboratory of Crystal Materials
2015-2025
Shandong University
2016-2025
Huazhong University of Science and Technology
2010-2025
Crystal Research (United States)
2025
Energy Research Institute
2022-2024
China General Nuclear Power Corporation (China)
2022-2023
Nanosys (United States)
2019
Lanzhou University
1999-2017
State Council of the People's Republic of China
2015-2016
Beijing Jingshida Electromechanical Equipment Research Institute
2014
Herein, we demonstrate that hexagonal boron nitride nanosheets (h-BNNSs) can be used as water dispersible lubricant additive through simple fluoride modification. The fluorination of h-BNNSs (F-BNNSs) is carried out via a facile ball milling commercial h-BN microflakes in ammonia solution. as-obtained F-BNNSs exhibit excellent antifriction and antiwear performance with low concentration less than 1.0 mg/mL, their friction coefficients lower 0.08, achieving friction. This originates because...
Piezoelectric functional materials have been extensively studied and employed in numerous devices. With the rapid development of modern industries, such as power plants, aerospace, automotive, renewable energy material processing high temperature piezoelectric that can work extreme environments are great demand. including single crystals, ceramics films, at heart electromechanical actuation sensing A variety applications where actuators sensors operate elevated temperatures (T 200℃) would be...
Abstract Here, novel ferroelectric ceramics of (0.95 − x )BiScO 3 ‐ PbTiO ‐0.05Pb(Sn 1/3 Nb 2/3 )O (BS‐ PT‐PSN) complex perovskite structure are reported with compositions near the morphotropic phase boundary (MPB), and which exhibit a piezoelectric coefficient d 33 = 555 pC N −1 , large‐signal ≈ 1200 pm V at room temperature, high Curie temperature T C 408 °C. More interestingly, this ternary system exhibits giant stable response 200 °C 2500 matching that costly relaxor‐based single...
In this work, the efficiency of lead‐free La 2 NiMnO 6 (LNMO)‐based double perovskite solar cells is optimized using cell capacitance simulator (SCAPS‐1D). Herein, device performance boosted by different combinations electron‐transport layers, hole‐transport absorber layer thickness, acceptor doping density, defect and bandgap tuning, modifying electron affinity. To make more realistic, proposed carefully modified in presence interface density ≈10 −13 cm −3 , series resistance ≈1 Ω shunt...
Abstract Advancing the development of high‐temperature piezoelectric sensors requires high‐performance materials with high Curie temperatures, wherein charge signals can be efficiently collected at elevated temperatures. The bismuth layer‐structured ferroelectric (BLSF) titanate‐ferrite (Bi 5 Ti 3 FeO 15 , BTF) has recently attracted considerable attention because its temperature ( T C ) ∼761°C. However, properties BTF‐based compounds have not been extensively investigated their extremely...
Abstract The piezoelectric, dielectric, and electromechanical properties of the (KCe) co‐substituted calcium bismuth niobate (CaBi 2 Nb O 9 , CBN) were investigated. piezoelectric activities CBN ceramics significantly enhanced dielectric loss tan δ decreased by substitution. Ca 0.9 0.05 Bi possess optimal properties, coefficient ( d 33 ), Curie temperature T C coupling factors k p t ) found to be 16 pC/N, 868 °C, 8.6%, 23.8%, respectively. excellent spectra, together with high ultrahigh...
Abstract Bismuth layer–structured ferroelectric calcium bismuth niobate (CaBi 2 Nb O 9 , CBN) is considered to be one of the most potential high‐temperature piezoelectric materials due its high Curie temperature T c ∼940°C, but drawbacks low electrical resistivity at elevated and performance limit applications as key electronic components (HT). Herein, we report significantly enhanced dc properties CBN ceramics through rare‐earth element Tb ions compositional adjustment. The nominal...
The piezoelectric properties of the lithium and cerium modified A-site vacancies sodium-potassium bismuth titanate (NKBT) lead-free piezoceramics are investigated. activity NKBT ceramics is significantly improved by modification cerium. Curie temperature TC, coefficient d33, mechanical quality factor Qm for with 0.10mol% (LiCe) found to be 660°C, 25pC∕N, 3135, respectively. gradually decreases from 675to650°C increase modification. dielectric spectroscopy shows that all samples possess...
An Aurivillius phase bismuth layer‐structured compound potassium titanate is synthesized using conventional solid‐state processing. It was found that the range of sintering temperature for very narrow. Phase analysis performed by X‐ray diffraction, and microstructural morphology assessed scanning electron microscopy. The Curie T C , piezoelectric coefficient d 33 mechanical quality factor Q m ( k p mode) dense were to be 555°C, 21.2 pC/N, 1602, respectively. Dielectric spectroscopy showed...
There is a growing requirement for high‐temperature piezoelectric materials in the petrochemical, automotive, and aerospace industries. Here, of Fe Mn comodified 0.36 BiScO 3 –0.64 PbTiO (BS‐PTFMn) ceramics with high Curie temperature ( T c ), large mechanical quality factor Q m reduced strain hysteresis were presented. XRD results revealed that all BS ‐ PTFMn have pure perovskite structure tetragonal symmetry, ratio c/a insensitive to contents . With modifications Fe, dielectric loss tanδ...
Abstract In this paper, we report on our progress developing heavy metal free (or Cd‐free) QD‐LEDs for all three colors. With improvement in synthesis, have developed high quantum yield dots (more than 95% red and green more 80% blue), with peak wavelengths suitable BT.2020. Building upon these high‐performance through novel device structure design optimization demonstrated efficiency EQE = 16.9%, 13%, 9% red, green, blue, respectively. Specifically, a systematic study the impact of shell...
Abstract CaBi 2 Nb O 9 thin film capacitors were fabricated on SrRuO 3 -buffered Pt(111)/Ti/Si(100) substrates by adopting a two-step fabrication process. This process combines low-temperature sputtering deposition with rapid thermal annealing (RTA) to inhibit the grain growth, for purposes of delaying polarization saturation and reducing ferroelectric hysteresis. By using this method, films uniformly distributed nanograins obtained, which display large recyclable energy density W rec ≈ 69...
In this paper, a multi-folded-beam piezoelectric energy harvester (MFB-PEH) was proposed for low-power harvesting applications in wide frequency band, low frequency, and amplitude vibration environments. The MFB-PEH consists of one traditional main beam two new additional L-shaped wing beams, which are designed to improve the bandwidth harvest ambient energy. Firstly, finite element method (FEM) used search optimal design that can make operational broader yield maximum power output....