A5046541694- Perovskite Materials and Applications
- Conducting polymers and applications
- Advanced Memory and Neural Computing
- Quantum Dots Synthesis And Properties
- Electronic and Structural Properties of Oxides
- Power Transformer Diagnostics and Insulation
- Magnetic properties of thin films
- Chalcogenide Semiconductor Thin Films
- Physics of Superconductivity and Magnetism
- Semiconductor materials and devices
- ZnO doping and properties
- GaN-based semiconductor devices and materials
- Ga2O3 and related materials
- Phase-change materials and chalcogenides
- Transition Metal Oxide Nanomaterials
- High voltage insulation and dielectric phenomena
- Magnetic Properties and Applications
- Water Quality Monitoring and Analysis
- Organic Electronics and Photovoltaics
- Sensorless Control of Electric Motors
- EEG and Brain-Computer Interfaces
- Advanced Photocatalysis Techniques
- Petroleum Processing and Analysis
- Wireless Power Transfer Systems
- Iterative Learning Control Systems
Nanyang Technological University
2024
Tianjin Chengjian University
2024
China University of Geosciences (Beijing)
2018-2023
Hohai University
2023
Guangxi Normal University
2020-2023
China University of Geosciences
2022
State Grid Hebei Electric Power Company
2022
First People’s Hospital of Jingmen
2022
Jiangsu University
2017-2020
China Three Gorges University
2018
In this contribution, the efficiencies of perovskite solar cells have been further enhanced, based on optical optimization studies. The photovoltaic devices with textured film can be obtained and a power conversion efficiency (PCE) fluorine-doped tin oxide (FTO)/Ag nanoparticles (NPs) embedded in c-TiO2/m-TiO2/CH3NH3PbI3/Spiro-OMeTAD/Au showed 33.7% enhancement, maximum up to 14.01% was achieved. enhancement attributed light trapping effect caused by FTO incorporated Ag NPs, which enhance...
Light-modulated lead-free perovskites-based memristors, combining photoresponse and memory, are promising as multifunctional devices. In this work, double perovskite Cs2AgBiBr6 films with dense surfaces uniform grains were prepared by the low-temperature sol-gel method on indium tin oxide (ITO) substrates. A memory device based a film, Pt/Cs2AgBiBr6/ITO/glass, presents obvious bipolar resistive switching behavior. The ROFF/RON ratio under 445 nm wavelength light illumination is ~100 times...
High-density Cs2AgBiBr6 films with uniform grains were prepared by a simple one-step and low-temperature sol-gel method on indium tin oxide (ITO) substrates. An explicit tristate bipolar resistance switching behavior was observed in the Pt/Cs2 AgBiBr6/ITO/glass devices under irradiation of 10 mW/cm2 (445 nm). This stable over 1200 s. The maximum ratio high low states about 500. Based analysis electric properties, valence variation absorption spectra, resistive characteristics attributed to...
Lead-free, bismuth-based perovskite solar cells (PSCs) are promising, non-toxic, and stable alternatives to lead-based PSCs, which environmentally harmful highly unstable under deprived air conditions. However, PSCs still suffer from low-power-conversion efficiency (PCE) due their large bandgap poor film morphology. Their film-forming ability is the greatest obstacle Cs₃Bi₂I₉ progress in thin-film cell technology. This study synthesizes novel, lead-free perovskites with a small bandgap,...
In order to further promote the commercial application of perovskite solar cells (PSCs), it is particularly important fabricate devices in ambient air condition. Herein, we explore a simple method reproduce high-efficiency and stable PSCs using one-step anti-solvent deposition conducted full air. NH4Ac (ammonium acetate), which green environmentally friendly, first introduced into an (ethyl acetate) enhance photovoltaic performance stability devices. NH4+ causes intermediate phase undergo...
Intermediate phase is considered an important aspect to deeply understand the crystallization procedure in growth of high-quality perovskite layers by anti-solvent technique. However, moisture influence on intermediate formation not clear air conditions as yet. In this work, pure (FA0.2MA1.8)Pb3X8(DMSO·DMF) was obtained as-prepared film spin-coating precursor co-solvent (DMSO and DMF) ambient (RH20-30%). Moreover, appropriate quantity ethyl acetate (C4H8O2, EA) also controls phase. The...
High-quality CH3NH3PbI 3-xClx (MAPIC) films were prepared using potassium chloride (KCl) as an additive on indium tin oxide (ITO)-coated glass substrates a simple one-step and low-temperature solution reaction. The Au/KCl-MAPIC/ITO/glass devices exhibited obvious multilevel resistive switching behavior, moderate endurance, good retention performance. Electrical conduction analysis indicated that the behavior of KCl-doped MAPIC was primarily attributed to trap-controlled space-charge-limited...
By using the density functional theory of quantum chemistry, gas reaction mechanism in AlN MOVPE process has been investigated, especially after amide DMAlNH2 formation. Two paths are distinguished formation and oligomerization: intramolecular path intermolecular path, both involved with methane elimination. inspections changes Gibbs energy ΔG between products reactants, as well activation divided by RT, ΔG*/RT, to account for thermal at different temperatures, most probable paths, thin film...
Molecular simulation technology is a new emerging with the rapid development of computer technology. It has advantages clear microscopic models, in-depth and precise calculation etc., it been widely used in oil–paper insulation system transformer recent years. Based on application molecular transformers this study, current research status progress these area are elaborated detail from aspects insulating oil paper according to domestic foreign literature, plant nano-modified emphatically...
<sec>In recent years, organic-inorganic hybrid perovskite solar cells have become a research hotspot in the photovoltaic field because of their excellent power conversion efficiency. However, this material's intrinsic instability and harsh preparation environment limit its further commercial application. All-inorganic CsPbBr<sub>3</sub> materials attracted much attention good stability, low cost can be prepared an atmospheric environment, showing great application...
α‐Fe 2 O 3 /NiCoFe–OH photoelectrode with high hydrophilicity is obtained by hot alkali etching on the surface of /NiCoFe–LDH. Compared /NiCoFe–LDH (CO (OH) 16 ·4H O), /NiCoFe‐OH photoelectrodes show better photocurrent performance. This improvement attributed to highly hydrophilic NiCoFe–OH promoting effective contact between and electrolyte, thus enhancing carrier separation migration electrode. In these findings, an way provided improve photoelectrochemical properties .
The new all-inorganic CsPbX<sub>3</sub> perovskite material is expected to be used as an absorbing layer prepare solar cells for efficient and stable commercial devices. However, the problems of high cost poor stability, caused by precious metal electrodes hole transport materials, urgently need solving. Therefore, carbon-based (C-PSCs) based on HTL-free system have attracted widespread attention. This work adopts a strategy finely regulating ratio I Br in X-site perovskite....
Spin Transfer Torque Magnetic Random Access Memories (STT-MRAM) are based on Tunnel Junctions (MTJs) made out of two ferromagnetic electrodes separated by a MgO tunnel barrier. Here we report experimental data the STT-induced dynamics SAF RL in perpendicularly magnetized STT-MRAM devices. We show evidence different dynamical modes depending properties. also develop an analytical model 3-layer macrospin model, which allows us to reproduce main feature and derive phase diagram dynamics....
<sec> ZnO is a promising electron transport material. It has not only similar energy level position and physical properties to traditional TiO<sub>2</sub>, but also excellent light transmittance, conductivity, stability, low cost temperature preparation. Studies have shown that the one-dimensional nanostructured layer higher rate, provides direct channel avoids its being recombined at grain boundaries, thereby improving carrier collection efficiency. been reported rate of...
Dense and flat La[Formula: see text]NiFeO[Formula: text] (LNFO) films were fabricated on the indium tin oxide-coated glass (ITO/glass) substrate by sol-gel method. The bipolar resistive switching behavior (BRS) could be maintained in 100 cycles remained after 30 days, indicating that LNFO-based RS device owned good memory stability. Surprisingly, multilevel characteristics firstly observed Au/LNFO/ITO/glass device. high resistance states (HRSs) low state (LRS) with maximum ratio of [Formula:...
Spin Transfer Torque Magnetic Random Access Memory (STT-MRAM) is the leading technology for next generation non-volatile embedded memories. In this presentation, we use Spin-Torque Ferromagnetic Resonance (ST-FMR) to measure anisotropy field of perpendicularly magnetized devices down 25 nm in size. We show that effective HK <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">eff</sub> , including demagnetizing field, exceeds 10 kOe at room...
Abstract High-quality CH3NH3PbI3-xClx (MAPIC) films were prepared using potassium chloride (KCl) as an additive on indium tin oxide(ITO)-coated glass substrates a simple one-step and low-temperature solution reaction. The Au/KCl-MAPIC/ITO/Glass devices exhibited obvious multilevel resistive switching behavior, moderate endurance, good retention performance. Electrical conduction analysis indicated that the behavior of KCl-doped MAPIC was primarily attributed to trap-controlled...
Abstract Bismuth-based lead-free perovskite solar cells (PSCs) are a non-toxic alternative to lead-based organic-inorganic hybrid PSCs. However, bismuth-based halides PSCs exhibit low power conversion efficiency (PCE) due the grain boundaries and interfacial defects in crystalline film. This discouragingly poor PCE has limited continued development of Herein, for first time on record, this work fabricated blended, heterojunction, all-inorganic consisting Cs 3 Bi 2 I 9 Ag BiI 5 absorber layer...