Highly efficient blue-emitting three-dimensional (3D) lead–free halide perovskites with excellent stability have attracted worldwide attention. Herein, a doping route was adopted to incorporate Sb3+ ions into the Cs2NaInCl6 for decorating electronic band structure. Due moderate electron–phonon coupling, Sb3+-doped double showed narrow and relatively unusual blue emission of self-trapped excitons (STEs). Density functional theory (DFT) calculation indicated that doped could break...

Hydrogels are investigated broadly in flexible sensors which have been applied into wearable electronics. However, further application of hydrogels is restricted by the ambiguity sensing mechanisms, and multi-functionalization systems based on terms cost, difficulty integration, device fabrication remains a challenge, obstructing specific scenarios. Herein, cost-effective, structure-specialized scenario-applicable 3D printing direct ink writing (DIW) technology fabricated two-dimensional...

Abstract The key dilemma for green hydrogen production via electrocatalytic water splitting is the high overpotential required anodic oxygen evolution reaction (OER). Co/Fe‐based materials show superior catalytic OER activity to noble metal‐based catalysts, but still lag far behind state‐of‐the‐art Ni/Fe‐based catalysts probably due undesirable side segregation of FeOOH with poor conductivity and unsatisfied structural durability under large current density. Here, a robust durable catalyst...

The mRNA vaccine, a groundbreaking advancement in the field of immunology, has garnered international recognition by being awarded prestigious Nobel Prize, which emerged as promising prophylactic and therapeutic modality for various diseases, especially cancer, rare disease, infectious disease such COVID-19, wherein successful treatment can be achieved improving stability introducing safe effective delivery system. Nanotechnology-based systems, lipid nanoparticles, lipoplexes, polyplexes,...

By controlling local substrate temperature in a chemical vapor deposition system, we have successfully achieved spatial composition grading covering the complete range of ternary alloy CdSSe nanowires on single 1.2 cm length. Spatial photoluminescence scan along length shows peak wavelength changes continuously from approximately 500 to 700 nm. Furthermore, show that under strong optical pumping, every spot displays lasing behavior. Thus our nanowire chip provides spatially tunable laser...

Double perovskites exhibit low toxicity, intrinsic thermodynamic stability, and small carrier effective mass. Herein, a novel doping route was adopted to incorporate Mn ions into Cs2Na1-xAgxBiCl6 double for engineering the band gap tailoring energy transfer. The as-prepared (0 < x 1) exhibited excellent photoluminescence broad self-trapped exciton (STE) from 500 900 nm, which an abnormal emission peak blue shift with increasing temperature. For Mn-doped Cs2Na1-xAgxBiCl6, two (PL) bands d-d...

Abstract Developing efficient non‐noble and earth‐abundant hydrogen‐evolving electrocatalysts is highly desirable for improving the energy efficiency of water splitting in base. Molybdenum disulfide (MoS 2 ) a promising candidate, but its catalytic activity kinetically retarded alkaline media due to unfavorable adsorption dissociation feature. A heterogeneous electrocatalyst reported that constructed by selenium‐doped MoS (Se‐MoS particles on 3D interwoven cobalt diselenide (CoSe nanowire...

Abstract Lead halide perovskites have demonstrated promising emission tunability achieved by composition engineering, which makes them viable in several potential applications. Determining how to effectively control the crystalline structural transformation and lead‐free is of great importance. Herein, a controllable synthetic method reported obtain 0D metal perovskite derivatives (Cs 1− x Rb ) 2 InCl 5 ∙H O 3 6 , through synergistic regulation Cs/Rb feed ratios reaction solvent. When...

CsPbX3 perovskites have attracted tremendous attention recently due to their excellent optical properties and potential applications. However, this seemingly counterintuitive fact that can act as both extraordinary photovoltaic materials superior emission mediums has not yet been well understood. In work, the absorption spectrum, temperature-dependent Raman spectra, temperature- excitation power-dependent steady-state micro-photoluminescence along with lifetime dynamics were used...

One-dimensional nanostructures of direct-forbidden semiconductor SnO2 crystallite have been prepared in large scale via thermal evaporation tin monoxide at 1100 °C. The anomalous optical emission even lasing phenomena are observed below the band edge under pulsed laser excitation, which usually does not occur for a semiconductor. Scanning electron microscopy, X-ray powder diffraction, transmission UV−vis reflectance spectroscopy, and Raman scattering spectra were used to characterize...

Exploration and development of new two-dimensional (2D) materials with good stability remarkable physical properties have become the research hotspots. We report for first time monodispersity ultrathin MoO2 nanosheets been synthesized through an improved chemical vapor deposition (CVD) method using only molybdenum trioxide as precursor. The grown average thickness ∼ 5 to 10 nm exhibit crystal-quality. Temperature-dependent Raman spectra show that high thermal up 503 K. In addition, order...

Near-infrared photodetectors with polarization-sensitive capabilities have garnered significant attention in modern optoelectronic devices. SbSeI, one of the quasi-1D ternary V–VI–VII compounds, exhibits enormous advantages near-infrared polarization detection due to its suitable bandgap and pronounced anisotropy. Here, SbSeI nanowires were obtained by a mechanical exfoliation method from bulk crystals, photoelectric properties anisotropy systematically investigated. The as-fabricated...

The delicate interplay among the complex intra/inter-layer electron–electron and electron–lattice interactions is fundamental prerequisite of these exotic quantum states, such as superconductivity, nematic order, checkerboard charge order. Here, we explore filling-dependent multiple stable intertwined electronic atomic orders flat-band state 1T-TaS2 encompassing hole phase orders, coexisting left- right-chiral mixed phase/chiral via scanning tunneling microscopy (STM). Combining...

High purity and tin-doped 1D CdS micro/nano-structures were synthesized by a convenient thermal evaporation method. SEM, EDS, XRD TEM used to examine the morphology, composition, phase structure crystallinity of as-prepared samples. Raman spectrum was confirm tin doped into effectively. The effect impurity on photoresponse properties photodetectors made from these pure under excitation light with different wavelength investigated. Various photoconductive parameters such as responsivity,...

For their spintronic applications the magnetic and optical properties of diluted semiconductors (DMS) have been studied widely. However, exact relationships between interactions emission behaviors in DMS are not well understood yet due to complicated microstructural compositional characters from different growth preparation techniques. Manganese (Mn) doped ZnSe nanoribbons with high quality were obtained by using chemical vapor deposition (CVD) method. Successful Mn ion doping a single...

The monoclinic m-MoO2 shows strong in-plane anisotropy that is essential to design anisotropic nanodevices. However, there not yet detailed study on the of nanostructures. Here, Raman spectra and electrical conductivity single-crystal nanosheets were investigated systematically for first time. Angle-resolved polarized spectroscopy (ARPRS) distinct dependence excitation laser wavelength sample thickness, demonstrating robust wavelength-dependent optical absorption,...

Tungsten trioxide (WO3) is always oxygen-deficient or non-stoichiometric under atmospheric conditions. Positively charged oxygen vacancies prefer to drift as well electrons when the electric field strong enough, which will alter distribution of and then endow WO3 with memristive properties. In Au/WO3 nanowire/Au sandwich structures two ohmic contacts, axial electrical transport properties can be more easily modulated by bias voltage. The threshold for vacancy drifting in single-crystal...

Abstract Herein, composites of tin‐assisted antimony sulfide decorated on reduced graphene oxide (Sn@Sb 2 S 3 ‐rGO) were prepared by using a simple hydrothermal method. As an anode material sodium‐ion batteries, the Sn@Sb ‐rGO exhibited good electrochemical performance with initial discharge (sodiation) specific capacity 1002.0 mAh g −1 , and they maintained approximately 600 at current density 200 mA after 60 cycles. The performances could be explained composite bimetallic synergistic...

Absolute 6-fold symmetrically branched CdS nanostructures were heteroepitaxially grown with a simple two-step evaporation method. The ZnS nanowires synthesized in first step and then used as templates for the following growth of symmetrical nanobelts or nanowire at varied temperature second step. orientation relationship between was investigated to confirm effect crystalline substrates on epitaxial (1D directional) process branch nanostructures. photoluminescence spectra as-synthesized...

High-purity and doped ZnTe microstructures were synthesized with a single thermal evaporation method. The morphology of shows multilayered periodical structure, which is due to the incorporation In elements. PL investigation demonstrated that pure emit only green light (close bandedge) while varied concentrations red or infrared without band-edge emission. These emission changes reflected Donor−Acceptor pair state transition can be tuned in semiconductor for future applications.

One-dimensional Mn–ZnSe nanostructures with high crystallite quality were synthesized by the CVD method. Transmission electron microscopy was used to study defect state, crystal lattice and growth direction of as-prepared nanostructures. Raman spectra under varied excitation wavelengths confirmed dopant modes Mn(II) inhomogeneity. The micro-photoluminescence (PL) individual CW laser different powers showed dominant trapped state emission periodic multi-peaks. selected peak mapping indicated...

As a topological material, bismuth (Bi) shows unique physical properties when its thickness is reduced to two dimensions. Here, single crystal, high stability, and continuous Bi thin films are successfully synthesized through vapor deposition method. We further investigate temperature-dependent Raman spectroscopy behavior ranging from 80 513 K. The first-order temperature coefficients of Eg A1g modes estimated be −0.0133 −0.0253 cm–1/K, respectively. A model used analyze the observed...

Converting solar energy into sustainable hydrogen fuel by photoelectrochemical (PEC) water splitting is a promising technology to solve increasingly serious global supply and environmental issues. However, the PEC performance based on TiO2 nanomaterials hindered limited sunlight-harvesting ability its high recombination rate of photogenerated charge carriers. In this work, layered SnS2 absorbers CoOx nanoparticles decorated two-dimensional (2D) nanosheet array photoelectrode have been...