A5037362177- Perovskite Materials and Applications
- Quantum Dots Synthesis And Properties
- Chalcogenide Semiconductor Thin Films
- Advanced Photocatalysis Techniques
- Conducting polymers and applications
- Solid-state spectroscopy and crystallography
- 2D Materials and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Copper-based nanomaterials and applications
- Organic Light-Emitting Diodes Research
- Luminescence and Fluorescent Materials
- Molecular Junctions and Nanostructures
- Optical properties and cooling technologies in crystalline materials
- Organic Electronics and Photovoltaics
- ZnO doping and properties
- Porphyrin and Phthalocyanine Chemistry
- Thin-Film Transistor Technologies
- Gas Sensing Nanomaterials and Sensors
- Photochromic and Fluorescence Chemistry
- Luminescence Properties of Advanced Materials
- Ga2O3 and related materials
- Crystallization and Solubility Studies
- Graphene research and applications
- Photochemistry and Electron Transfer Studies
- Electrochemical Analysis and Applications
Dalian Institute of Chemical Physics
2016-2025
Chinese Academy of Sciences
2016-2025
Harbin Medical University
2025
Third Affiliated Hospital of Harbin Medical University
2025
State Key Laboratory of Molecular Reaction Dynamics
2021-2025
Dynamique du noyau
2025
Dalian National Laboratory for Clean Energy
2019-2023
Collaborative Innovation Center of Chemistry for Energy Materials
2016-2021
Dalian University of Technology
2021
University of Chinese Academy of Sciences
2020-2021
Given that energy (exciton) migration in natural photosynthesis primarily occurs highly ordered porphyrin-like pigments (chlorophylls), equally porphyrin-based metal-organic frameworks (MOFs) might be expected to exhibit similar behavior, thereby facilitating antenna-like light-harvesting and positioning such materials for use solar conversion schemes. Herein, we report the first example of directional, long-distance within a MOF. Two MOFs, namely F-MOF DA-MOF are composed two Zn(II)...
Two-dimensional (2D) organolead halide perovskites are promising for various optoelectronic applications. Here we report a unique spontaneous charge (electron/hole) separation property in multilayered (BA)2(MA)n-1PbnI3n+1 (BA = CH3(CH2)3NH3+, MA CH3NH3+) 2D perovskite films by studying the carrier dynamics using ultrafast transient absorption and photoluminescence spectroscopy. Surprisingly, films, although nominally prepared as "n 4", found to be mixture of multiple phases, with n 2, 3, 4 ≈...
High-quality ultrathin single-crystalline SnSe2 flakes are synthesized under atmospheric-pressure chemical vapor deposition for the first time. A high-performance photodetector based on individual flake demonstrates a high photoresponsivity of 1.1 × 103 W−1, EQE 2.61 105%, and superb detectivity 1.01 1010 Jones, combined with fast rise decay times 14.5 8.1 ms, respectively. As service to our authors readers, this journal provides supporting information supplied by authors. Such materials...
The recombination of electron–hole pairs severely detracts from the efficiency photocatalysts. This issue could be addressed in metal–organic frameworks (MOFs) through optimization charge-transfer kinetics via rational design structures at atomic level. Herein, a pyrazolyl porphyrinic Ni-MOF (PCN-601), integrating light harvesters, active catalytic sites, and high surface areas, has been demonstrated as superior durable photocatalyst for visible-light-driven overall CO2 reduction with H2O...
Because of their efficient energy-transport properties, porphyrin-based metal-organic frameworks (MOFs) are attractive compounds for solar photochemistry applications. However, absorption bands provide limited coverage in the visible spectral range light-harvesting We report here functionalization MOFs with CdSe/ZnS core/shell quantum dots (QDs) enhancement light harvesting via energy transfer from QDs to MOFs. The broad band region offers greater spectrum by QD-MOF hybrid structures. show...
We report the synthesis and characterization of two thin films (DA-MOF L2-MOF) porphyrin-based MOFs on functionalized surfaces using a layer-by-layer (LbL) approach. Profilometry measurements confirm that film thickness increases systematically with number growth cycles. Polarization excitation fluorescence indicate porphyrin units are preferentially oriented, while X-ray reflectivity scans point to periodic ordering. Ellipsometry show highly porous. Since there currently few methods capable...
Designing heterojunction photocatalysts imitating natural photosynthetic systems has been a promising approach for photocatalytic hydrogen generation. However, in the traditional Z-Scheme artificial systems, poor charge separation, and rapid recombination of photogenerated carriers remain huge bottleneck. To rationally design S-Scheme (i.e., Step scheme) heterojunctions by avoiding futile transport routes is therefore seen as an attractive to achieving high evolution rates. Herein, twin...
Photocatalytic reduction of CO2 is a promising approach to achieve solar-to-chemical energy conversion. However, traditional catalysts usually suffer from low efficiency, poor stability, and selectivity. Here we demonstrate that large porous stable metal-organic framework featuring dinuclear Eu(III)2 clusters as connecting nodes Ru(phen)3-derived ligands linkers constructed catalyze visible-light-driven reduction. Photo-excitation the metalloligands initiates electron injection into generate...
Self-trapped excitons (STEs) in metal halide materials are attracting an increasing level of interest due to their unique light emission properties. Light from STEs halides is usually associated with excited-state structural deformation, which lowers the symmetry local structures, as seen for a wide range systems. Here, we reveal prototypic STE-associated "distortion" that, however, enhances series all-inorganic copper(I)-based Cs3Cu2X5 (X = Cl, Br, or I). We further find that peaks...
Single-crystal CH3NH3PbX3 (X = I–, Cl–, Br–) perovskite nanowires (NWs) and nanoplates (NPs), which demonstrate ultracompact sizes exceptional photophysical properties, offer promises for applications in nanoscale photonics optoelectronics. However, traditional electronic transient techniques are limited by the dimensions of samples, characterizations carrier behavior (diffusion coefficient, charge mobility diffusion length) these NWs NPs extremely difficult. Herein, we report direct...
Crystal organometal halide perovskites with specific morphologies and unique optoelectronic properties have extended their applications into the whole field.
The two-dimensional (2D) perovskites stabilized by alternating cations in the interlayer space (ACI) define a new type of structure with different physical properties than more common Ruddlesden–Popper counterparts. However, there is lack understanding material crystallization films and its influence on morphological/optoelectronic final photovoltaic devices. Herein, we undertake situ studies solidification process for ACI 2D perovskite (GA)(MA)nPbnI3n+1 (⟨n⟩ = 3) from ink to solid-state...
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...
Abstract 2D perovskites stabilized by alternating cations in the interlayer space (ACI) represent a very new entry as highly efficient semiconductors for solar cells approaching 15% power conversion efficiency (PCE). However, further improvements will require understanding of nature films, e.g., thickness distribution and charge‐transfer characteristics ACI quantum wells (QWs), which are currently unknown. Here, control film quality perovskite (GA)(MA) n Pb I 3 +1 (〈 〉 = 3) QWs via...
Powder samples of mixed halide perovskite MAPbBr3–xIx (MA = methylammonium ion, CH3NH3+) were prepared by employing a facile light-assisted halide-exchange method in aqueous solution at room temperature. It is found that the distribution iodide ions particles tends to be largest on surface and becomes lower going into interior so they have correct bandgap funnel structure needed for transferring photogenerated charge carriers from surface. Consequently, MAPbBr3–xIx/Pt powder sample (250 mg)...
Development of water-stable metal-organic frameworks (MOFs) for promising visible-light-driven photocatalytic water splitting is highly desirable but still challenging. Here we report a novel p-type nickel-based MOF single crystal (Ni-TBAPy-SC) and its exfoliated nanobelts (Ni-TBAPy-NB) that can bear wide range pH environment in aqueous solution. Both experimental theoretical results indicate feasible electron transfer from the H4TBAPy ligand (light-harvesting center) to Ni-O cluster node...
Abstract Lead‐free inorganic halide perovskites have triggered appealing interests in various energy‐related applications including solar cells and photocatalysis. However, why perovskite‐structured materials exhibit excellent photoelectric properties how the unique crystalline structures affect charge behaviors are still not well elucidated but essentially desired. Herein, taking perovskite Cs 3 Bi 2 Br 9 as a prototype, significant derivation process of silver atoms incorporation to induce...
Conversion of CO2 into fuels via solar energy would be a promising strategy to reduce emissions and produce value-added carbon compounds. However, the development efficient light-harvesting photocatalytic systems remains significant challenge because scarcity low-cost high-efficiency catalysts in conversion. Herein, tunable selectivity photothermal conversion was demonstrated over series Fe-based developed through simple hydrogenation/carbonization treatment with commercial Fe3O4 as...
Developing the technology for high yielding photocatalytic hydrogen evolution reactions is an important challenge. Development and optimization of junctions a likely route achieving this if heterojunctions with suitable band alignments can be achieved in sufficiently high-density form. Here, novel anatase-TiO2/H-rutile-TiO2 heterophase homojunction system near optimum energy alignment reported. The resulting as-prepared catalyst exhibits excellent rate 29.63 mmol g–1 h–1 under UV–vis light...
Abstract Suffering from sluggish charge transfer kinetics, carbon‐based perovskite solar cells (C‐PSCs) lag far behind the Ag/Au‐based normal PSCs in power conversion efficiency (PCE). Herein, use of defective multi‐walled CNT (D‐MWCNT) is demonstrated to tune kinetics regarding hole transport layer (HTL) and interface between HTL carbon electrode. Benefiting electrostatic dipole moment interaction terminal oxygen‐containing groups D‐MWCNT 2,2′,7,7′‐tetrakis( N ,...