A5100716497- Perovskite Materials and Applications
- Ferroelectric and Piezoelectric Materials
- Multiferroics and related materials
- Solid-state spectroscopy and crystallography
- 2D Materials and Applications
- Metal-Organic Frameworks: Synthesis and Applications
- Magnetism in coordination complexes
- Conducting polymers and applications
- Nonlinear Optical Materials Research
- Organic and Molecular Conductors Research
- Supercapacitor Materials and Fabrication
- Ga2O3 and related materials
- Crystal Structures and Properties
- Photorefractive and Nonlinear Optics
- Lanthanide and Transition Metal Complexes
- Metal complexes synthesis and properties
- Photonic and Optical Devices
- Advanced Sensor and Energy Harvesting Materials
- Aerogels and thermal insulation
- Advanced Condensed Matter Physics
- Acoustic Wave Resonator Technologies
- Coral and Marine Ecosystems Studies
- Surface Modification and Superhydrophobicity
- Inorganic Chemistry and Materials
- Luminescence Properties of Advanced Materials
Chinese Academy of Sciences
2008-2025
Institute of Engineering Thermophysics
2020-2025
Fujian Institute of Research on the Structure of Matter
2008-2024
University of Chinese Academy of Sciences
2020-2024
Sichuan University
2024
West China Hospital of Sichuan University
2024
Tan Kah Kee Innovation Laboratory
2021-2024
BOE Technology Group (China)
2024
Institute of Semiconductors
2023
Chongqing Emergency Medical Center
2023
Two-dimensional (2D) hybrid perovskites of Ruddlesden–Popper (RP) lattices are recently booming as a vigorous class ferroelectrics, whereas their intrinsic van der Waals gaps exert weak interactions that destabilize the layered motifs. Thus, it is an urgent challenge to reduce interlayered energy allow exploration stable RP ferroelectrics. Here, we propose hydrogen bonds 2D RP-type while ferroelectricity retained. For first time, homoconformational trans isomer has been alloyed spacing...
Phase change materials (PCMs) store and release energy in the phase processes.In recent years, PCMs have gained increasing attention due to their excellent properties such as high latent heat storage capacity, appropriate solid-liquid temperature, thermal reliability, low cost.Herein, classification, characteristics, evaluation criteria of organic/composite are systematically illustrated, some typical preparation methods introduced, in-situ polymerization, interfacial spray drying method,...
Molecular ferroelectric films (MFFs) offer a good platform for miniaturized electronic devices, which are inseparable from their multiaxial nature. Despite great studies, soft MFFs with broadband photo-electroactivity still remain huge blank as the photoexcited leakage current will severely deteriorate ferroelectricity, hindering optoelectronic applications. Here, we constructed MFF of HA2EA2Pb3I10 (1, where EA = ethylammonium and HA n-hexylammonium) in 2D multilayered perovskites. Eight...
Polarized-light detection in the deep ultraviolet solar-blind region is indispensable for optoelectronic applications. 2D hybrid perovskite ferroelectrics with inherent anisotropy and bulk photovoltaic effect (BPVE) have become a robust candidate this portfolio. We here report wide band-gap ferroelectric, (isobutylammonium)2 (methylamium)Pb2 Cl7 (1), which BPVE behaves as self-driving source polarized-light detection. It exhibits large dichroism ratio (≈15.7) superior BPVE-directed...
Broadband photodetection has shown a great promise for diverse applications, while the realization of plateau photoresponse from ultraviolet (UV) to near-infrared (NIR) spectral region is very challenging. Herein, we exploit photoexcited pyroelectric effect in chiral hybrid perovskite, (N, N-dimethylcyclohexylammonium)PbBr3 (1), serving as new pathway drive broadband photoactivities. It room-temperature with large polarization ≈6.4 μC cm-2 and high figure-of-merits (FV =1.0×10-2 cm2 μC-1 FD...
Polarization sensitivity, which shows great potential in photoelectric detection, is expected to be significantly improved by the ferroelectric anomalous photovoltaic (APV) effect. However, it challenging explore new APV-active ferroelectrics due severe polarization fatigue induced leakage current of photoexcited carriers. For first time, we report a strong APV effect 2D hybrid perovskite assembled alloying mixed organic cations, (HA)2(EA)2Pb3Br10 (1, where HA+ n-hexylammonium and EA+...
Out-of-hospital cardiac arrest (OHCA) is an important global public health issue, but its epidemiology and outcomes in low-income middle-income countries remain largely unknown. We aim to comprehensively describe the incidence, process of care, OHCA China.In prospective, multicentre, population-based Baseline Investigation Cardiac Arrest (BASIC-OHCA) registry study, participating sites were selected from both urban rural areas all seven geographical regions across China. All patients with...
Abstract Photoexcited pyroelectricity in ferroelectrics allows the direct conversion of light radiation into electric signal without external power source, thus paving an avenue to promote optoelectronic device performances. However, it is urgently demanded exploit new with this attribute covering ultraviolet (UV)‐to‐infrared (IR) region for self‐powered photodetection. Herein, broadband light‐induced pyroelectric effects a 2D perovskite‐type ferroelectric, (BBA)2(EA)2Pb3Br10 (1; BBA =...
Halide double perovskites have recently emerged as an environmentally green candidate toward electronic and optoelectronic applications owing to their non-toxicity versatile physical merits, whereas study on high-temperature antiferroelectric (AFE) with excellent anti-breakdown property remains a huge blank in this booming family. Herein, we present the first AFE of lead-free halide perovskites, (CHMA)2CsAgBiBr7 (1, where CHMA+ is cyclohexylmethylammonium), by incorporating flexible organic...
The photopyroelectric effect in ferroelectrics has shown great potential for application infrared detection and imaging. One particular subclass is broadband with dielectric bistability, which allows large pyroelectric figures-of-merit (FOMs). Herein, an improper high-Tc perovskite ferroelectric, (IA)2 (EA)2 Pb3 Cl10 (1, where IA isoamylammonium EA ethylammonium) presented, spontaneous polarization (Ps ) stems from the dynamic ordering of organic cations tilting distorted PbCl6 octahedra....
X-ray detection plays a significant role in industry and medicine, while it remains challenging to implement highly sensitive without an external source. Here, we have successfully achieved strong X-ray-induced pyroelectric–photovoltaic coupling layered perovskite, (DFBZA)2PbCl4 (DFBZA = 2,4-difluorobenzylamine), serving as effective self-powered pathway. is room-temperature pyroelectric with photoexcited pyroelectricity, of which the detecting capacity (FD) reaches up ∼3.32 × 10–5 Pa–0.5...
Antiferroelectric materials with an electrocaloric effect (ECE) have been developed as promising candidates for solid-state refrigeration. Despite the great advances in positive ECE, reports on negative ECE remain quite scarce because of its elusive physical mechanism. Here, a giant (maximum ΔS ∼ −33.3 J kg–1 K–1 ΔT −11.7 K) is demonstrated near room temperature organometallic perovskite, iBA2EA2Pb3I10 (1, where iBA = isobutylammonium and EA ethylammonium), which comparable to greatest...
In this study, using tert-butanol/water co-solvent as the freeze-drying solvent, we successfully prepared high-quality monolithic carbon nanotubes (CNTs) reinforced silica aerogel composites.The effects of CNTs on pore structures, thermal performance and mechanical properties CNTs/silica composites were investigated.Generally, when content is below 4 wt.%, are uniformly distributed in matrix due to effective ultrasonic dispersion process.In addition, form a good interface combination with...
A series of transition metal coordination polymers with azide and flexible zwitterionic dicarboxylate ligands was synthesized structurally magnetically characterized. These compounds are formulated as [M(2)(L(1))(N(3))(4)] (L(1) = 4,4'-trimethylenedipyridinio-N,N'-diacetate M Mn, 1; Co, 2; Ni, 3) [ML(2)(N(3))(6)(H(2)O)(2)] (L(2) 4,4'-dipyridinio-N,N'-diacetate 4; 5). The isomorphous 1-3 consist two-dimensional layers in which the anionic uniform chains mixed triple bridges (two end-on (EO)...
Abstract 2D organometallic halide perovskites are recently emerging as a robust family of ferroelectrics, which their inherent spontaneous polarization ( P s ) endows fascinating quadratic nonlinear optical properties. However, up to date, few studies reported tune and control the second harmonic generation (SHG) effect in this ferroelectric branch. Herein, first improper multilayered hybrid perovskites, (IA) 2 (EA) Pb 3 Br 10 1 , where IA is isoamylammonium EA ethylammonium), exhibits high...
Antiferroelectric (AFE) materials, featuring an antiparallel alignment of electric dipoles in the adjacent sublattices, are keeping a great promise toward solid-state refrigeration applications on account their electrocaloric (EC) effects. Although extensive studies have been performed inorganic oxide counterparts (e.g., PbZrO3 and AgNbO3), metal-free molecular AFE alternatives with above-room-temperature EC activities quite scarce but urgently demanded terms environmental issues. Herein, we...
2D Dion-Jacobson (DJ) phase hybrid perovskites have shown great promise in the photoelectronic field owing to their outstanding optoelectronic performance and superior structural rigidity. However, DJ lead-free double are still a virgin land with direct X-ray detection. Herein, we designed synthesized new layered perovskite of (HIS)2 AgSbBr8 (1, HIS2+ = histammonium). Centimeter-sized (18 × 10 5 mm3 ) single crystals 1 successfully grown via temperature cooling technique, exhibiting...
We herein report a mixed organic cationic hybrid nitrate, namely, [C(NH2)2NHNO2][C(NH2)3](NO3)2 (1). It was successfully achieved via combining three different planar groups: [(C(NH2)2NHNO2]+, C(NH2)3+, and NO3-. First-principles calculations confirm that the [(C(NH2)2NHNO2]+ group is an excellent nonlinear-optical (NLO)-active unit. The title compound exhibits moderate second-harmonic-generation (SHG) response (1.5 × KDP), wide band gap (3.58 eV), suitable birefringence of 0.071 at 550 nm....
The bulk anomalous photovoltaic (BAPV) effect of acentric materials refers to a distinct concept from traditional semiconductor-based devices, which the above-bandgap photovoltage hints at promise for solar-energy conversion. However, it is still challenge exploit new BAPV-active systems due lacking knowledge on structural origin this concept. BAPV effects in single crystals 2D lead-free double perovskite, (BBA)2 CsAgBiBr7 (1, BBA = 4-bromobenzylammonium), tailored by mixing aromatic and...
Abstract Ferroelectric semiconductors represent an exciting branch of new‐generation optoelectronic devices. However, regarding severe polarization deterioration caused by leakage current, it is challenging to couple ferroelectricity and semiconductive properties in a single‐phase material. The first quadrilayered ferroelectric semiconductor 2D homologous perovskites, IA 2 Cs 3 Pb 4 Br 13 (IA = isoamylammonium), showing distinctive characteristics symmetry breaking at 351 K large 4.2 µC cm...
Metal-free antiferroelectric materials are holding a promise for energy storage application, owing to their unique merits of wearability, environmental friendliness, and structure tunability. Despite receiving great interests, metal-free antiferroelectrics quite limited it is challenge acquire new soft candidates. Here, we have successfully exploited binary CMBrxI1-x CMBrxCl1-x solid solution as single crystals (0 ≤ x 1, where CM cyclohexylmethylammonium). A molecule-level modification can...