A5040389294- Laser-Matter Interactions and Applications
- Mass Spectrometry Techniques and Applications
- Advanced Chemical Physics Studies
- Advanced Fiber Laser Technologies
- Spectroscopy and Quantum Chemical Studies
- Atomic and Molecular Physics
- Laser-Plasma Interactions and Diagnostics
- Advanced Electron Microscopy Techniques and Applications
- Metamaterials and Metasurfaces Applications
- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Gas Sensing Nanomaterials and Sensors
- Analytical Chemistry and Sensors
- Laser-induced spectroscopy and plasma
- Radiation Detection and Scintillator Technologies
- Quantum optics and atomic interactions
- Conducting polymers and applications
- Ideological and Political Education
- Particle physics theoretical and experimental studies
- Advanced Antenna and Metasurface Technologies
- Photonic and Optical Devices
- Particle Detector Development and Performance
- Advanced X-ray Imaging Techniques
- ZnO doping and properties
- Plasmonic and Surface Plasmon Research
Huazhong University of Science and Technology
2016-2025
Sichuan University
2018-2025
South China Agricultural University
2025
Wuhan National Laboratory for Optoelectronics
2015-2024
Alibaba Group (China)
2024
Union Hospital
2016-2024
University of Shanghai for Science and Technology
2023
Chinese Academy of Sciences
2010-2023
Zhongshan Hospital of Xiamen University
2023
Fudan University
2023
Metal oxide/graphene nanocomposites are emerging as one of the promising candidate materials for developing high-performance gas sensors. Here, we demonstrate sensitive room-temperature H2S sensors based on SnO2 quantum wires that anchored reduced graphene oxide (rGO) nanosheets. Using a one-step colloidal synthesis strategy, morphology-related confinement can be well-controlled by tuning reaction time, because steric hindrance effect rGO. The as-synthesized wire/rGO spin-coated onto...
Abstract Perovskite solar cells (PSCs) have rapidly developed and achieved power conversion efficiencies of over 20% with diverse technical routes. Particularly, planar‐structured PSCs can be fabricated low‐temperature (≤150 °C) solution‐based processes, which is energy efficient compatible flexible substrates. Here, the efficiency stability planar are enhanced by improving interface contact between SnO 2 electron‐transport layer (ETL) perovskite layer. A biological polymer (heparin...
We measure high resolution photoelectron angular distributions (PADs) for above-threshold ionization of xenon atoms in infrared laser fields. Based on the Ammosov-Delone-Krainov theory, we develop an intuitive quantum-trajectory Monte Carlo model encoded with Feynman's path-integral approach, which Coulomb effect electron trajectories and interference patterns are fully considered. achieve a good agreement measured PADs ionization. The theory sheds light role ionic potential along...
Abstract The self‐assembled hole transporting molecules (SAHTMs) bearing anchoring groups have been established as the layers (HTLs) for highly efficient p–i–n perovskite solar cells (PSCs), yet their stability and engineering at molecular level remain challenging. A topological design of anisotropic aligned SAHTM‐based HTLs operationally stable PSCs that exhibit exceptional solar‐to‐electric power conversion efficiencies (PCEs) is demonstrated. judiciously designed multifunctional comprise...
We report attosecond-scale probing of the laser-induced dynamics in molecules. apply method high-harmonic spectroscopy, where laser-driven recolliding electrons on various trajectories record motion their parent ion. Based transient phase-matching mechanism high-order harmonic generation, short and long contributing to same order are distinguishable both spatial frequency domains, giving rise a one-to-one map between time photon energy for each trajectory. The H_{2} D_{2} used simultaneously...
We investigate electron momentum distributions from single ionization of Ar by two orthogonally polarized laser pulses different color. The two-color scheme is used to experimentally control the interference between wave packets released at times within one cycle. This intracycle pattern typically hard resolve in an experiment. With scheme, these features become dominant contribution distribution. Furthermore, second color can be for streaking otherwise interfering establishing a which-way...
We experimentally studied the three-body fragmentation dynamics of ${\mathrm{CO}}_{2}$ initiated by intense femtosecond laser pulses. Sequential and nonsequential fragmentations were precisely separated identified for $\mathrm{CO}_{2}{}^{3+}$ to break up into ${\mathrm{O}}^{+}+{\mathrm{C}}^{+}+{\mathrm{O}}^{+}$ ions. With accurate measurements three-dimensional momentum vectors correlated atomic ions calculations high-level ab initio potential $\mathrm{CO}_{2}{}^{3+}$, we reconstructed...
Watching the valence electron move in molecules on its intrinsic timescale has been one of central goals attosecond science and it requires measurements with subatomic spatial temporal resolutions. The time-resolved photoelectron holography strong-field tunneling ionization holds promise to access this realm. However, remains be a challenging task hitherto. Here we reveal how information motion is encoded hologram momentum distribution (PEMD) develop novel approach retrieval. As...
We measure photoelectron angular distributions of noble gases in intense elliptically polarized laser fields, which indicate strong structure-dependent Coulomb asymmetry. Using a dedicated semiclassical model, we have disentangled the contribution direct ionization and multiple forward scattering on asymmetry elliptical fields. Our theory quantifies roles ionic potential initial transverse momentum asymmetry, proving that small lobes are induced by is potential. Both processes distorted...
Solution-processed SnO2 colloidal quantum dots (CQDs) have emerged as an important new class of gas-sensing materials due to their potential for low-cost and high-throughput fabrication. Here we employed the design strategy based on synergetic effect from highly sensitive CQDs excellent conductive properties multiwalled carbon nanotubes (MWCNTs) overcome transport barrier in CQD gas sensors. The attachment coverage MWCNT surfaces were achieved by simply mixing presynthesized MWCNTs at room...
We present a subcycle nonadiabatic strong-field tunneling theory and derive the position of tunnel exit, transverse longitudinal momentum distributions at ionization rate in an instantaneous laser field. These coordinates are shown to nonadiabatically couple with each other field when electron tunnels through barrier. have further incorporated quantum-trajectory Monte Carlo approach investigate effect on photoelectron angular distributions. The simulated corrections been validated by...
Traditional photoconductive photodetectors (PDs) commonly respond to higher energy photons compared with the bandgaps of PD active materials. Different from wide detection spectra traditional PDs, present reported PbS quantum dot (QD) PDs can detect spectra-selective light source. Spectra-selective (ss-PDs) perovskite/QDs and QD/QDs were respectively implemented by integrating two functional layers. The top layer (facing light) was utilized filter non-target bottom used for detection....
Laser-induced electron tunneling ionization from atoms and molecules plays as the trigger for a broad class of interesting strong-field phenomena in attosecond community. Understanding time is vital to achieving ultimate accuracy metrology. We propose novel photoelectron interferometer, which based on interference direct near-forward rescattering wave packets, determine information characterizing process. Adding weak perturbation orthogonal strong fundamental field, phases packets are...
We study the phase structure of tunneling wave packets from strong-field ionization molecules and present a molecular quantum-trajectory Monte Carlo model to describe laser-driven dynamics photoelectron momentum distributions molecules. Using our model, we reproduce explain alignment-dependent frame spectra ${\mathrm{N}}_{2}$ reported by M. Meckel et al. [Nat. Phys. 10, 594 (2014)]. In addition modeling low-energy angular quantitatively, extract packets, shedding light on its physical...
Laser-induced electron tunneling underlies numerous emerging spectroscopic techniques to probe attosecond dynamics in atoms and molecules. The improvement of those requires an accurate knowledge the exit momentum for wave packet. Here we demonstrate a photoelectron interferometric scheme longitudinal tunnel direction at by measuring holographic pattern orthogonally polarized two-color laser pulse. In this scheme, use perturbative 400-nm field modulate fringes generated strong 800-nm fringe...
A multifunctional interface modulator GO/(CsPbBr 3 QD) composite decreases resistive losses of perovskite solar modules by enhanced charge transport and decreased carrier recombination, as well inhibiting ion/molecule diffusion.
Tunneling is one of the most fundamental and ubiquitous processes in quantum world. The question how long a particle takes to tunnel through potential barrier has sparked long-standing debate since early days mechanics. Here, we propose demonstrate novel scheme accurately determine tunneling time an electron. In this scheme, weak laser field used streak current produced by strong elliptically polarized attoclock configuration, allowing us retrieve ionization relative maximum with precision...
For fabricating high-performance perovskite solar cells (PSCs) and modules, it is crucial to obtain high-quality (PVSK) films efficient interfacial charge transport. Here, we introduce a synergistic strategy combining [6,6]-4-fluorophenyl-C61-butyric acid (FPAC60) self-assembled monolayer (SAM) bis-adduct 2,5-(dimethyl ester) C60 fulleropyrrolidine (bis-DMEC60) additive an device. The FPAC60 SAM can not only promote transport passivate defects at the SnO2/PVSK buried interface but also serve...
We perform a triple coincidence study on differential momentum distributions of strong-field double ionization Ar atoms in linearly polarized fields (795 nm, 45 fs, 7×10(13) W/cm2). Using three-dimensional two-electron atomic-ensemble semiclassical model including the tunneling effect for both electrons, we retrieve and achieve good agreement with measurement. Ionization dynamics correlated electrons side-by-side back-to-back emission is analyzed separately. According to model, find that...
High-resolution photoelectron momentum distributions of Xe atoms ionized by 800-nm linearly polarized laser fields have been traced at intensities from 1.1*1013 to 3.5*1013W/cm2 using velocity-map imaging techniques. At certain intensities, the spectrum exhibits a distinct double-ring structure for low-order above-threshold ionization, which appears be absent lower or higher intensities. By investigating intensity-resolved energy spectrum, we find that this originates resonant multiphoton...