Single-crystalline ZnS nanobelts with sharp ultraviolet-light emission (∼337 nm) at room temperature have been assembled as UV Sensors. The high spectral selectivity, combined photosensitivity and fast response time, justifies the effective utilization of present "visible-light-blind" photodetectors in different areas.

The synthesis of high-quality In2Se3 nanowire arrays via thermal evaporation method and the photoconductive characteristics individual nanowires are first investigated. electrical characterization a single verifies an intrinsic n-type semiconductor behavior. These single-crystalline then assembled in visible-light sensors which demonstrate fast, reversible, stable response. high photosensitivity quick photoresponse attributed to superior single-crystal quality large surface-to-volume ratio...

High piezo-photocatalytic efficiency of degrading organic pollutants has been realized from CuS/ZnO nanowires using both solar and mechanical energy. heterostructured nanowire arrays are compactly/vertically aligned on stainless steel mesh by a simple two-step wet-chemical method. The mesh-supported nanocomposites can facilitate an efficient light harvesting due to the large surface area also be easily removed treated solution. Under ultrasonic irradiation, rapidly degrade methylene blue...

Abstract Simultaneous implementation of photodetector and neuromorphic vision sensor (NVS) on a single device faces great challenge, due to the inherent speed discrepancy in their photoresponse characteristics. In this work, trench‐bridged GaN/Ga 2 O 3 /GaN back‐to‐back double heterojunction array is fabricated enable advanced functionalities both devices device. Interestingly, shows fast persistent photoconductivity behavior at low high voltages, respectively, through modulation oxygen...

Abstract Vertically aligned ZnO nanonails and nanopencils are synthesized on a silicon substrate using modified thermal‐evaporation process, without catalyst or predeposited buffer layers. An adiabatic layer is used to provide an abrupt temperature decrease high gas concentration for the nanostructures growth. The structure morphology of as‐synthesized characterized X‐ray diffraction, scanning transmission electron microscopies. Raman photoluminescence properties also investigated at room...

Abstract Here, a facile and effective route toward full control of vertical ZnO nanorod (NR)/nanowire (NW) arrays in centimeter‐scale areas considerable improvement field‐emission (FE) performance is reported. Controlled deformation colloidal crystal monolayer templates introduced by heating near glass‐transition temperature. The NR/NW density, uniformity, tapering were all adjusted through selection template size deformation, electrolyte composition. In line with the adjustments,...

Fluorite-structured CeO2 nanotubes have been synthesized by controlled annealing of layered Ce(OH)3 nanotubes. The latter fabricated means hydrothermal treatment anhydrate cerium chloride. nanotube formation has attributed to lamellar rolling under appropriate conditions. non-layered could possess nanotubular morphology only in the presence structural defects (see Figure; tube diameter: ∼ 18 nm).

A GaN NW UV photodetector with superior wavelength selectivity exhibits significant enhancement of photocurrent, responsivity, EQE and sensitivity after Pt NPs decoration due to the strong absorption scattering incident light improvement interfacial charge separation.

The detection of UV-A rays (wavelength 320-400 nm) using functional semiconductor nanostructures is great importance in either fundamental research or technological applications. In this work, we report the catalytic synthesis peculiar bicrystalline GaN nanowires and their utilization for building high-performance optoelectronic nanodevices. as-prepared photodetector based on individual nanowire demonstrates a fast photoresponse time (144 ms), high wavelength selectivity (UV-A light response...

TiO2/ZnO nanowire arrays on stainless steel mesh for piezo-photocatalytic H2 production are synthesized via a two-step hydrothermal route. The photocatalytic efficiency under solar illumination can be enhanced by introducing mechanical vibration energy. As coutilizing the and energy (ultrasonic irradiation), nanowires show high production. also excellent recyclability stability. Additionally, this mesh-based structure retrieved easily from aqueous solution, which meet practical application...

Flexible optoelectronics is an emerging research field that has attracted a great deal of interest in recent years due to the special functions and potential applications these devices flexible image sensors, optical computing, energy conversion devices, Internet Things, other technologies. Here, we examine high-performance ultraviolet (UV) photodetectors using AZO/ZnO nanorods/PVK/PEDOT:PSS heterostructures integrated on human hair. Due precise interfacial energy-level alignment among all...

Crystalline GaN nanosheets hold great challenge in growth and promising application optoelectronic nanodevices. In this work, we reported an accessible template approach toward the rational synthesis of through nitridation metastable γ-Ga2O3 synthesized from a hydrothermal reaction. The cubic with smooth surface decent crystallinity can be directly converted into hexagonal similar morphology framework comparable crystal quality NH3 at 850 °C. UV–vis spectrum measurement reveals that show...

The development of cheap and highly active electrocatalysts for efficient water splitting is crucial the production green hydrogen at a low cost. In this work, we proposed two-step method including hydrothermal nitridation reactions to in situ synthesize NiMoN nanorod arrays with abundant sites fast electron transfer rate on nickel foam substrate. optimal tailoring Ni/Mo ratio leads high concentration Mo3+ species suitable Ni doping content catalyst, which shows superior evolution reaction...

Quaternary Heusler alloy Ni2(Mn,Fe)Ga has been studied systematically for the structure, martensitic transformation, and magnetic properties in two systems of Ni50.5Mn25−xFexGa24.5 Ni50.4Mn28−xFexGa21.6. Substituting Fe Mn up to about 70%, pure L21 phase thermoelastic transformation still can be observed these quaternary systems. Iron doping dropped temperature from 220 140 K, increased Curie 351 429 broadened thermal hysteresis 7 18 K. Magnetic analysis revealed that atoms contribute net...

Single-crystalline bamboo-like β-SiC nanowires with hexagonal cross-sections were synthesized by thermal evaporation of mixed SiO+C+GaN powders in an Ar atmosphere. The as-synthesized studied x-ray diffraction, scanning electron microscopy and transmission microscopy. Studies found that the SiC are composed stems decorated larger diameter knots along their whole length growth direction. is governed vapour–liquid–solid mechanism. Field-emission properties peculiar nanostructures also...

Abstract High‐quality, uniform one‐dimensional CdS micro/nanostructures with different morphologies—microrods, sub‐microwires and nanotips—are fabricated through an easy effective thermal evaporation process. Their structural, cathodoluminescence field‐emission properties are systematically investigated. Microrods nanotips exhibit sharp near‐band‐edge emission broad deep‐level emission, whereas show only the emission. A significant decrease in a deep‐level/near‐band‐edge intensity ratio is...

Large-yield and crystalline GaN nanowires have been synthesized on a Si substrate via simple thermal evaporation process. The majority of the has bicrystalline structures with needlelike shape, triangular prism morphology, uniform diameter ∼100 nm. Field-emission measurements show that sharp tips lower turn-on field ∼7.5 V/μm are good candidates for low-cost large-area electron emitters. It is believed excellent filed emission property attributed to structure defects tips.

Self-organized, freestanding TiO2 nanotube arrays that exhibit tube-in-tube morphology are fabricated using a one-step anodic method. These uniform and compact. The tubes within the several micrometers long with 200 nm outer diameter. They have coarse lateral profile leads to large aspect ratio guarantees good photocatalytic properties.

Ultrafast degradation of organic pollutions has been realized by the piezo-photocatalytic activity Ag₂O/tetrapod-ZnO nanostructures under ultrasonic/UV irradiation.

The ultra-sensitive photodetection of different wavelengths holds promising applications in high-performance optoelectronic devices and it requires an efficient suitable semiconductor unit. Herein, we demonstrated the designable synthesis 3D-branched hierarchical 3C-SiC/ZnO heterostructures by a three-step process their assembling into ultrasensitive photodetector. Microstructure analyses using high-resolution transmission electron microscopy reveal that heterostructure is composed...

Molybdenum disulfide (MoS2) as a typical two-dimensional (2D) transition-metal dichalcogenide exhibits great potential applications for the next-generation nanoelectronics such photodetectors. However, most MoS2-based photodetectors hold obvious disadvantages including narrow spectral response in visible region, poor photoresponsivity, and slow speed. Here, first time, we report design of MoS2/GaN van der Waals (vdWs) heterostructure photodetector consisting few-layer p-type MoS2 very thin...