A5100709617- Perovskite Materials and Applications
- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Solid-state spectroscopy and crystallography
- Conducting polymers and applications
- Organic Light-Emitting Diodes Research
- Mechanical Engineering and Vibrations Research
- Cancer survivorship and care
- Semiconductor Lasers and Optical Devices
- Gastrointestinal disorders and treatments
- nanoparticles nucleation surface interactions
- Gold and Silver Nanoparticles Synthesis and Applications
- Iron oxide chemistry and applications
- Spinal Cord Injury Research
- Fiber-reinforced polymer composites
- Material Properties and Applications
- Fibromyalgia and Chronic Fatigue Syndrome Research
- Microwave Engineering and Waveguides
- Geophysics and Sensor Technology
- Transportation Safety and Impact Analysis
- Process Optimization and Integration
- Millimeter-Wave Propagation and Modeling
- Neurogenetic and Muscular Disorders Research
- Peroxisome Proliferator-Activated Receptors
- Cancer-related cognitive impairment studies
Beijing National Laboratory for Molecular Sciences
2019-2025
Peking University
2016-2025
University of Hong Kong
2019-2025
State Key Laboratory of Rare Earth Materials Chemistry and Application
2019-2025
KTH Royal Institute of Technology
2025
University of Cambridge
2025
CRRC (China)
2024
Zhongshan Hospital of Xiamen University
2024
Zhejiang Provincial People's Hospital
2021
Battery Park
2020
A redox road to recovery Device longevity is a key issue for organic-inorganic perovskite solar cells. Encapsulation can limit degradation arising from reactions with oxygen and water, but light, electric-field, thermal stresses lead metastable elemental halide atom defects. Wang et al. show that the lead-iodine system, introduction of rare earth europium ion pair Eu 3+ -Eu 2+ shuttle electrons recover iodine ions (Pb I − ). Devices incorporating this maintained more than 90% their initial...
Abstract Further minimizing the defect state density in semiconducting absorber is vital to boost power conversion efficiency of solar cells approaching Shockley-Queisser limit. However, it lacks a general strategy control precursor chemistry for defects reduction family iodine based perovskite. Here alkaline environment solution carefully investigated as an effective parameter suppress incident and affects crystallization kinetics during film fabrication, via rationale adjustment alkalinity...
Organic–inorganic halide perovskite has received extensive attention as a light harvester for next‐generation low‐cost and high‐performance photovoltaics. Its superior optoelectronic properties are attractive among most thin film absorber materials, such an extremely high absorption coefficient, optimal band gap, ambipolar carrier transport property, defects tolerance. However, it requires suitable electrodes materials to fulfill efficient photovoltaic process within entire device. Thus, the...
Crystal orientation has a great impact on the properties of perovskite films and resultant device performance. Up to now, exquisite control crystal (the preferred crystallographic planes stacking mode with respect particular planes) in mixed-cation perovskites received limited success, underlying mechanism that governs performance is still not clear. Here, thermodynamically favored formamidinium/methylammonium (FA/MA) finely tuned by composition engineering. Density functional theory...
Tailored Au@TiO<sub>2</sub> nanostructures successfully enhance the efficiency of planar perovskite solar cells.
The construction of hybrid perovskites (both two-dimensional (2D) and three-dimensional (3D)) has attracted intensive research interest recently. Here, a facile, two-step consecutive deposition method was developed for the first time to grow hierarchical quasi-2D/3D perovskite superstructure, with an oriented quasi-2D ((BA)2(MA)n−1PbnI3n+1) nanosheet (NS) perpendicularly aligned on 3D perovskites. superstructures are found be mixtures multiple phases, n = 2, 3, 4 perovskite; however, value...
Mixed anion/cation perovskites absorber has been recently implemented to construct highly efficient single junction solar cells and tandem devices. However, considerable efforts are still required map the composition-property relationship of mixed absorber, which is essential facilitate device design. Here we report intensive exploration mixed-cation in their compositional space with assistance a rational mixture design (MD) methods. Different from previous linear search cation ratios, it...
Colloidal quantum dots (QDs) have illuminated computer monitors and television screens due to their fascinating color-tunable properties depending on the size. Here, electroluminescence (EL) wavelength of perovskite LEDs was tuned via atomic layer number (ALN) nanoplates (NPs) instead "size" in conventional QDs. We demonstrated efficient with controllably tailored emission from n = 3, 4, 5, ≥7 ALN NPs specific discrete major peaks at 607, 638, 669, 728 nanometers. These peak external...
In this work, we propose the application of liquid crystalline acceptors as a potential means to improve performances bulk heterojunction (BHJ) organic solar cells. LC-1, structurally-simple perylene diimide (PDI), has been adopted model for thorough investigation. It exhibits broad temperature range (LC) phase from 41 °C 158 °C, and its LC properties have characterized by differental scanning calorimetry (DSC), polarization optical microscopy (POM), X-ray diffraction (XRD). The BHJ devices,...
A small molecule/polymer transport composite was proposed for stable, efficient perovskite solar cells (PSCs). Planar n-i-p PSCs prepared <italic>via</italic> a low temperature process achieved stable efficiency of ∼22.9%, and retained ∼92% the original stabilized 560 h.
Among the various building blocks beyond polycrystalline thin films, perovskite wires have attracted extensive attention for potential applications including nanolasers, waveguides, field-effect transistors, and more. In this work, millimeter-scale lead iodine-based employing A-site substitutions, namely, Cs, methylammonium (MA), formamidinium (FA), been synthesized via a new type solution method with nearly 100% yield. All of three millimeter scale (MPWs) compositions exhibit relatively...
The present study was designed to identify key genes or significant signaling pathways associated with spinal cord injury (SCI), and clarify the underlying molecular mechanisms of SCI. Data from GSE45550 array were downloaded Gene Expression Omnibus database. A total 6 control samples, samples at 3 days post‑SCI (SCI3d), 8 (SCI8d) 14 (SCI14d) included. microarray data preprocessed by robust multi‑array average algorithm. differentially expressed (DEGs) identified using limma package....
Here, we introduced acetamidine (C2H3N2H3, Aa)-based salt as an additive in the fabrication of perovskite (CH3NH3PbI3) layer for solar cells. It was found that amidine-based salt, this successfully enhanced crystallinity CH3NH3PbI3 and helped to form smooth uniform films with comparable grain size full coverage. Besides, film showed a much longer carrier lifetime obviously open-circuit voltage corresponding devices, indicating acetamidine-based can reduce recombination both device. We...
A design of space using L-band T/R module was introduced. GaN amplifier used to improve the module's performance. The multilayer boards were replace LTCC lower cost module. And cavity structures modified working reliability. fabricated tested in different temperatures.
γ-CsPbI<sub>3</sub> nanowires crystallized inside channels of mesoporous SBA-15 template, exhibit improved phase stability from the Pb and O anchoring.
The design of electron transport layers (ETLs) is crucial to the performance optoelectronic devices. A composite ETL was constructed overcome poor carrier extraction issue in perovskite solar cells, resulting a maximum PCE 19.14% with reduced hysteresis. similar enhancement phenomenon observed both devices based on TiO2 and SnO2 ETLs.
Carbon fiber-reinforced polymers (CFRPs) are widely applied in lightweight automotive design due to their high specific stiffness and strength. However, it is difficult achieve an ideal performance defects from manufacturing process. For example, fiber waviness cluster two typical manufacture the process of Liquid Composite Molding (LCM). The effective elastic modulus CFRPs with studied by finite element method, stress-transfer mechanisms between fibers matrix explained theoretically,...
Autoimmune pancreatitis (AIP) is a rare disease that manifests as pancreatic involvement in systemic IgG4-related (IgG4-RD), special type of chronic caused by autoimmune abnormalities. The main imaging manifestations AIP consist diffuse or localized enlargement and irregular duct narrowing. diagnosis challenging because it can present with focal lesions, similar to radiologically bile cancer cancer.A 55-year-old male patient was admitted painless jaundice multiple radiographic findings head...