A5034140386- Perovskite Materials and Applications
- Catalytic Processes in Materials Science
- Quantum Dots Synthesis And Properties
- Catalysis and Hydrodesulfurization Studies
- Catalysts for Methane Reforming
- Nuclear Physics and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Zeolite Catalysis and Synthesis
- Chalcogenide Semiconductor Thin Films
- Nuclear reactor physics and engineering
- Catalytic C–H Functionalization Methods
- Solid-state spectroscopy and crystallography
- Mesoporous Materials and Catalysis
- Innovative Microfluidic and Catalytic Techniques Innovation
- Sulfur-Based Synthesis Techniques
- Radiation Detection and Scintillator Technologies
- 3D Printing in Biomedical Research
- Polyoxometalates: Synthesis and Applications
- Magnetism in coordination complexes
- Nuclear Materials and Properties
- Microbial Community Ecology and Physiology
- Optical properties and cooling technologies in crystalline materials
- Radical Photochemical Reactions
- 2D Materials and Applications
- Cyclopropane Reaction Mechanisms
Dalian Institute of Chemical Physics
2008-2025
Chinese Academy of Sciences
2008-2025
University of Science and Technology of China
2018-2025
First Affiliated Hospital of Xi'an Jiaotong University
2025
China Institute of Atomic Energy
2023-2025
Collaborative Innovation Center of Chemistry for Energy Materials
2020-2025
University of Chinese Academy of Sciences
2008-2024
Central South University of Forestry and Technology
2022-2024
Central South University
2022-2024
Institute of Subtropical Agriculture
2021-2024
Abstract The shape-selective catalysis enabled by zeolite micropore’s molecular-sized sieving is an efficient way to reduce the cost of chemical separation in industry. Although well studied since its discovery, HZSM-5′s capability has never been fully exploited due co-existence different-sized straight channels and sinusoidal channels, which makes p -xylene production from toluene alkylation with least m o continue be one few industrial challenges Rather than modifications promote...
Abstract Flat panel displays enjoy 100 billion‐dollar markets with significant penetration in daily life, which require efficient, color‐saturated blue, green, and red light‐emitting diodes (LEDs). The recently emerged halide perovskites have demonstrated low‐cost outstanding performance for potential LED applications. However, the of blue perovskite LEDs (PeLEDs) lags far behind green cousins, particularly color coordinates approaching (0.131, 0.046) that fulfill Rec. 2020 specification...
Divalent manganese cation (Mn2+) doped perovskite materials are of great interest for their unique optical, magnetic, and electric properties. Herein, we report an excitation-dependent emission color tuning from individual Mn-doped CsPbCl3 microcrystal (MC) with a wide range, reversible continuous change, high photostability. We demonstrate that the MCs exhibit dual-color both host excitons (blue) Mn-dopants (orange) through internal energy transfer (IET) process. By simple change laser...
Layered two-dimensional (2D) hybrid perovskites are naturally formed multiple quantum well (QW) materials with promising applications in and optoelectronic devices. In principle, the transport of excitons 2D is limited by their short lifetime small mobility to a distance within few hundred nanometers. Herein, we report an observation long-distance carrier over 2 5 μm various thicknesses. Such long enabled trap-induced exciton dissociation into long-lived nonluminescent electron-hole...
Layered two-dimensional (2D) lead halide perovskites are a class of quantum well (QW) materials, holding dramatic potentials for optical and optoelectronic applications. However, the thermally activated exciton dissociation into free carriers in 2D perovskites, key property that determines their performance, was predicted to be weak due large binding energy (Eb, about 100-400 meV). Herein, contrast theoretical prediction, we discover an ultrafast (<1.4 ps) highly efficient (>80%) internal...
Three-dimensional (3D) tumor spheroids offer unprecedented capability for drug screening because of their unique features such as spatial 3D structure, relevant physiological responses, more complex intercellular network, and stroma–cancer cell interactions. Microfluidic technology provides a facile strategy to make uniform with potential high-throughput production. In this article, we develop microfluidic approach produce core–shell alginate particles, which allows the separate confinement...
A process for achieving photocatalyzed tri- and difluoromethylation/cyclizations constructing a series of or difluoromethylated indole[2,1-a]isoquinoline derivatives is described. This protocol utilized an inexpensive organic photoredox catalyst provided good yields. Moreover, the combination continuous flow photochemistry, designed to provide researchers with unique green process, was also shown be key allowing reaction proceed (product yield 83% in vs 0% batch).
Two-dimensional (2D) halide perovskites represent the natural semiconductor quantum wells (QWs), which hold great promise for optoelectronics. However, due to hybrid structure of Ruddlesden-Popper 2D perovskites, intrinsic nature hot-carrier kinetics remains shielded within. Herein, we adopt CsPbBr3 nanoplates as a model system reveal carrier dynamics in inorganic perovskite QWs. Interestingly, revealed an ultrafast and hot-phonon-bottleneck (HPB)-free cooling monodisperse QWs, is sharp...
Optical gain in solution-processable quantum dots (QDs) has attracted intense interest toward next-generation optoelectronics; however, the development of optical heavy-metal-free QDs remains challenging. Herein, we reveal that ZnSe1-xTex-based show excellent covering violet to near-red regime. A new mechanism is established alloy QDs, which promotes a theoretically threshold-less thanks ultrafast carrier localization and suppression ground-state absorption by Te-derived isoelectronic state....
Abstract With the development of optofluidic technology, liquid lasers have attracted intense interest but still face a formidable challenge due to lack qualified gain media and creative device design. Compared organic fluorescent dyes traditional CdSe‐based nanocrystals (NCs), lead‐halide perovskite (LHP) NCs feature larger coefficient higher robustness, which renders LHP promising unexploited medium. Herein, for first time, hidden principle governing solution‐based light amplification in...
Metal-halide perovskites are promising optical gain materials because of their excellent photophysical properties. Recently, large perovskite single crystals with phase purity, less defects, and over millimeter dimensions have been successfully synthesized. However, the effect from these large-size has not yet realized. Herein, we for first time report efficient two-photon pumped amplified spontaneous emission (ASE) millimeter-sized CsPbBr3 (SCs) a low threshold 0.65 mJ cm-2 an 38 cm-1....
Two-dimensional (2D) and quasi-2D Ruddlesden-Popper (RP) phase organolead halide perovskites are promising materials for both photovoltaic optoelectronic devices. Although they known to be more stable when exposed moisture than their 3D counterpart, chemical degradation of these under moisture, which not only leads a significant drop in device performance but also lead leakage, yet remains one the most serious hurdles practical applications. To gain insight into mechanism 2D/quasi-2D...
High pressure treatment has become an effective way to tune the optical properties of halide perovskites. However, how compression can affect carrier transport in perovskites remains unknown. Herein, by combining time-resolved imaging microscopy with a diamond anvil cell, we report situ measurement CH3NH3PbI3 perovskite microcrystals (MCs) under high pressure. From ambient 5.7 GPa, induces phase transition at 0.3–0.4 GPa and isostructural about 3 GPa. The diffusivity is found increase least...
Abstract The heavy‐metal‐free ZnSeTe quantum dots (QDs) hold great promise for the development of modern optoelectronic devices, yet, nature emissive state within remains elusive. Herein, different emission origins are clarified QDs with dilute and heavy Te contents based on multiple spectroscopic characterizations first‐principles calculation. In case incorporation (Te/Se < 20%), low‐energy tail asymmetric is ascribed to recombination from localized induced by clusters, hot carrier...
Lead halide perovskites have emerged as one of the most promising candidates for photovoltaic and photonic devices in decades. Motivated by aim to further improve their optical or optoelectronic performance, revealing carrier kinetics (e.g., diffusion, directional transport charge separation) within becomes an essential subject explore. For carriers perovskite semiconductors, time-resolved spectroscopy serves a sharp "eye" researchers observe underlying behaviors. In this Review, we focus on...
Photoresponsive MOFs with precise and adjustable reticular structures are attractive for light conversion applications. Uncovering the photoinduced carrier dynamics lays essential foundation further development optimization of MOF material. With application time-resolved spectroscopy, photophysical processes including excimer formation, energy transfer/migration, charge transfer/separation have been widely investigated. However, identification distinct in real experimental spectra still...
To fulfill the needs of neutron capture reaction cross-section measurement in keV energy region field nuclear astrophysics and advanced system development, 4π BaF_2 Gamma-Ray Total Absorption Facility (GTAF) developed by Key Laboratory Nuclear Data China Institute Atomic Energy (CIAE) was transplanted installed at Back-streaming White Neutron Source (Back-n) Spallation (CSNS) 2019. A series results has been achieved published based on GTAF since then, it identified that need reducing...