A5031612132- Perovskite Materials and Applications
- Advanced Fiber Laser Technologies
- Quantum Dots Synthesis And Properties
- Photonic Crystal and Fiber Optics
- Laser Design and Applications
- Solid State Laser Technologies
- Ferroelectric and Piezoelectric Materials
- Chalcogenide Semiconductor Thin Films
- Photonic and Optical Devices
- Advanced Fiber Optic Sensors
- Multiferroics and related materials
- Acoustic Wave Resonator Technologies
- Functional Brain Connectivity Studies
- Satellite Communication Systems
- Advanced Photonic Communication Systems
- Spectroscopy and Laser Applications
- Optical Network Technologies
- Software-Defined Networks and 5G
- Energy Harvesting in Wireless Networks
- Advanced Sensor and Energy Harvesting Materials
- Photonic Crystals and Applications
- Innovative Energy Harvesting Technologies
- Conducting polymers and applications
- Age of Information Optimization
- Network Traffic and Congestion Control
West China Hospital of Sichuan University
2025
Zhongda Hospital Southeast University
2025
Beijing Institute of Technology
2009-2024
Chinese Academy of Sciences
2010-2024
Zhengzhou University of Light Industry
2020-2024
Institute of Microelectronics
2021-2024
Jiaozuo University
2024
Advanced Research Institute
2024
University of Chinese Academy of Sciences
2011-2023
Kunming University of Science and Technology
2023
We report a Ruddlesden–Popper/3D heterostructure combined with molecule passivation within α-phase FAPbI<sub>3</sub> films for high-performance and ambient-air-stable solar cells.
Perovskite solar cells based on two-dimensional/three-dimensional (2D/3D) hierarchical structure have attracted significant attention in recent years due to their promising photovoltaic performance and stability. However, obtaining a detailed understanding of interfacial mechanism at the 2D/3D heterojunction, for example, ligand-chemistry-dependent nature heterojunction its influence charge collection final outcome, is not yet fully developed. Here we demonstrate underlying 3D phase...
All-inorganic CsPbI3 holds promise for efficient tandem solar cells, but reported fabrication techniques are not transferrable to scalable manufacturing methods. Herein, printable cells reported, in which the charge transporting layers and photoactive layer deposited by fast blade-coating at a low temperature (≤100 °C) ambient conditions. High-quality films grown via introducing concentration of multifunctional molecular additive Zn(C6 F5 )2 , reconciles conflict between air-flow-assisted...
The electronic conductivities of ferroelectric domain walls have been extensively explored over the past decade for potential nanoelectronic applications. However, realization logic devices based on requires reliable and flexible control domain-wall configuration conduction path. Here, we demonstrate electric-field-controlled stable repeatable on-and-off switching conductive within topologically confined vertex domains naturally formed in self-assembled nano-islands. Using a combination...
Two-dimensional (2D) Ruddlesden–Popper (RP) organic–inorganic perovskites have emerged as promising candidates for solar cells with technologically relevant stability. Herein, a new RP perovskite, the fifth member (⟨n⟩ = 5) of (CH3(CH2)2NH3)2(CH3NH3)n−1PbnI3n+1 family (abbreviated PA2MA4Pb5I16), was synthesized and systematically investigated in terms photovoltaic application. The obtained pure PA2MA4Pb5I16 crystal exhibits direct band gap Eg 1.85 eV. Systematic analysis on solid film...
Abstract Metal‐free halide perovskites, as a specific category of the perovskite family, have recently emerged novel semiconductors for organic ferroelectrics and promise wide chemical diversity ABX 3 structure with mechanical flexibility, light weight, eco‐friendly processing. However, after initial discovery 17 years ago, there has been no experimental information about their charge transport properties only one brief mention optoelectronic properties. Here, growth large single crystals...
Blade coating of mixed cation, halide perovskite films is investigated using <italic>in situ</italic> X-ray scattering to investigate the role formulations and processing routes eliminate need for anti-solvent dripping.
Solomon rings, upholding the symbol of wisdom with profound historical roots, were widely used as decorations in ancient architecture and clothing. However, it was only recently discovered that such topological structures can be formed by self-organization biological/chemical molecules, liquid crystals, etc. Here, we report observation polar rings a ferroelectric nanocrystal, which consist two intertwined vortices are mathematically equivalent to [Formula: see text] link topology. By...
Thermal effects and output power characteristics of kilowatt all-fiber master-oscillator amplifier (MOPA) are investigated. Proper designs for cooling apparatus proposed demonstrated experimentally, the purpose minimizing splice heating which is critical reliability high operation. By using these optimized methods, a thermal damage-free, highly efficient ytterbium-doped double-clad fiber MOPA operating at 1080 nm with 1.17 kW was obtained. The maximum surface temperature pump light launching...
High-quality methylammonium lead iodide-based perovskite layer with large crystal grains and relaxed lattice strain is demonstrated <italic>via</italic> simple ambient blade-coating from green solvents, an efficiency of 20.21% in solar cells.
Eco-friendly printing is important for mass manufacturing of thin-film photovoltaic (PV) devices to preserve human safety and the environment reduce energy consumption capital expense. However, it challenging perovskite PVs due lack eco-friendly solvents ambient fast printing. In this study, we demonstrate first time an concept high-performance solar cells. Both charge transport layers were fabricated from via scalable blade coating under conditions. The dynamic crystallization during...
Perovskite photovoltaics have made extraordinary progress in power conversion efficiency (PCE) and stability due to process formulation development. cell performance benefits from the addition of alkali metal cations, such as cesium (Cs + ) potassium (K mixed‐ion systems, but underlying reasons are not fully understood. Herein, solidification perovskite layers is studied, incorporating 5%, 10%, 20% Cs K using situ grazing incidence wide‐angle X‐ray scattering. It found that ‐doped solutions...
We report the passive phase locking of four high power Yb-doped fiber amplifiers with ring cavity. The interference patterns at different output are observed and Strehl ratios measured. maximum coherent array is up to 1062 W by multi-stage amplification. stable beam profiles various relationships controlling position feedback fiber, in good agreement calculated results. By using master oscillator power-amplifier (MOPA) architecture broadband operation passively phased systems, higher scaling...
Online reviews on E-commerce platforms contain users' opinions and emotions about the purchased products. How to enable machines understand semantics of review texts judge their emotional tendencies has become a hot topic common concern in academia industry. However, often come from various domains practical applications, thus there are differences description vocabulary. In this case, traditional classification models trained single domain have poor results. This paper proposes cross-domain...
Recent studies have shown that multivariate pattern analysis (MVPA) can be useful for distinguishing brain disorders into categories. Such analyses substantially enrich and facilitate clinical diagnoses. Using MPVA methods, whole functional networks, especially those derived using different frequency windows, applied to detect states. We constructed networks groups of vascular dementia (VaD) patients controls resting state BOLD-fMRI (rsfMRI) data from three bands - slow-5 (0.01∼0.027 Hz),...
The ability to control or prevent phase segregation in perovskites is crucial realizing stable and tunable mixed-halide optoelectronic devices. In this work, we systematically examine the impact of alkali-metal-cation (Cs+ K+) concentration on band structure, chemical composition, segregation, polycrystalline microstructure formamidinium-dominated mixed-cation perovskite films. It was found that incorporation Cs+ K+ cations decreases work function core levels all components shift toward...