We report on the simple fabrication of monolayer graphene (MLG)/germanium (Ge) heterojunction for infrared (IR) light sensing. It is found that as-fabricated Schottky junction detector exhibits obvious photovoltaic characteristics, and sensitive to IR with high Ilight/Idark ratio 2 × 10(4) at zero bias voltage. The responsivity detectivity are as 51.8 mA W(-1) 1.38 10(10) cm Hz(1/2) W(-1), respectively. Further photoresponse study reveals displays excellent spectral selectivity peak...

Silicon nanostructure-based solar cells have lately intrigued intensive interest because of their promising potential in next-generation energy conversion devices. Herein, we report a silicon nanowire (SiNW) array/carbon quantum dot (CQD) core-shell heterojunction photovoltaic device by directly coating Ag-assisted chemical-etched SiNW arrays with CQDs. The barrier height 0.75 eV exhibited excellent rectifying behavior rectification ratio 10(3) at ±0.8 V the dark and power efficiency (PCE)...

Near infrared light photodiodes have been attracting increasing research interest due to their wide application in various fields. In this study, the fabrication of a new n ‐type GaAs nanocone (GaAsNCs) array/monolayer graphene (MLG) Schottky junction is reported for NIR detection. The photodetector (NIRPD) shows obvious rectifying behavior with turn‐on voltage 0.6 V. Further device analysis reveals that photovoltaic NIRPDs are highly sensitive 850 nm illumination, fast response speed and...

Earthquakes have always attracted civil and geotechnical engineers' attention, especially when it comes to the liquefaction potential of soil. This paper investigates feasibility classifier based on stochastic gradient boosting (SGB) explore from actual cone penetration test (CPT) standard (SPT) field data. SGB is composed many classification regression trees which meet mechanism ensemble learning show strong predictive power compared with conventional statistical models in several...

Coal burst is a severe hazard that can result in fatalities and damage of facilities underground coal mines. To address this issue, robust unascertained combination model proposed to study the based on an updated database. Four assessment indexes are used model, which dynamic failure duration (DT), elastic energy index (WET), impact (KE) uniaxial compressive strength (RC). membership functions, including linear (L), parabolic (P), S Weibull (W) measure uncertainty level individual index. The...

Antibiotics that are most used to cure bacterial infections in the clinic result imbalance of intestinal microflora, destroy barrier, and induce resistance. There is an urgent need for antibacterial agent therapy does not microflora. Herein, we applied 4,6-diamino-2-pyrimidinethiol (DAPT)-coated Au nanoparticles (D-Au NPs) infection induced by Escherichia coli (E. coli) gut. We cultured D-Au NPs E. anaerobic atmosphere evaluate their bactericidal effect. studied distribution Au, biomarkers...

Hyperbolic materials, characterized by their hyperbolic dispersion relations of waves, have attracted significant attention due to distinct equifrequency contours. This study establishes a correlation between electron hyperbolicity and light hyperbolicity, unveiling fascinating scenarios resulting from interplay. The transition type-I type-II, induced varying the chemical potential electrons, also triggers similar in hyperbolicity. Through first-principles calculations, <a:math...

Transition-metal ion activated solid-state phosphors are of particular interest for the development LED-based white light sources.

Brown-colored TiO₂ with the absorption edge in red light was fabricated using a facile one-step treatment NaH solutions.

Purpose The purpose of this paper is to emphasize the underlying mechanism through which firms can achieve supply chain agility and augment business performance from vendor’s perspective. Design/methodology/approach Drawing on dynamic capability view contingency theory, study conceptualizes a moderated mediation model investigate influence process integration (PI), flexibility product-related complexity subsequent effect firm’s performance. Survey data sample 148 firms, in garment...

Abstract Titanium sesquioxide (Ti 2 O 3 ) is drawing broad attention due to its fascinating physical properties and promising applications in the fields of energy, biomedicine, electronics, among others. Its richness mainly strongly correlated d 1 electrons on Ti 3+ sites. In stark contrast titanium dioxide (TiO ), has an ultra‐narrow bandgap (≈0.1 eV) at room temperature, resulting from strong correlation electrons. Distinct electrical optical are introduced , accompanied with varied...

We report the construction of Schottky solar cells based on graphene nanoribbon/multiple silicon nanowires (SiNWs) junctions. Only a few (∼10) SiNWs were involved to miniaturize cell for nanoscale power source applications. It was found that doping level played an important role in determining device performance. By increasing level, with open circuit voltage 0.59 V and energy conversion efficiency 1.47% achieved under AM 1.5G illumination. The large effective junction area radial responsible high

Schottky junctions made from a titanium dioxide nanotube (TiO 2 NT) array in contact with monolayer graphene (MLG) film are fabricated and utilized for UV light detection. The TiO NT is synthesized by the anodization MLG through simple chemical vapor deposition process. Photoconductive analysis shows that junction photodetector (PD) sensitive to illumination good stability reproducibility. corresponding responsivity ( R ), photoconductive gain G detectivity D* ) calculated be 15 A W −1 , 51,...

The copper-catalyzed arylation of nucleophiles has been established as an efficient methodology for the formation C–C and C–heteroatom bonds. Considering advances during last two decades, ligand choice plays a key role in such transformations can strongly influence catalytic efficiency. applicability these Ullmann-type coupling reactions regarding orthogonal selectivity different functional groups constitutes challenging subject current synthetic strategies. Herein, we report useful toolkit...

In this paper, we analyze how carbon emissions affect the selection of transportation modes and social welfare by using a two-stage Stackelberg gaming model. Based on model, government's optimal carbon-emission tax scheme company's mode production decisions are explored. We find that: 1) whether or not transport can increase depends relationships among cost (SCC), shifting threshold (TMST), biggest that company afford (BCRA); 2) greater SCC implies higher probability improving via imposing...

The concept of seismic resilience is defined as the capability a system to maintain level functionality or performance in aftermath an earthquake event. In research reported this paper, methodology for assessment existing braced-frame office buildings was developed. context, damage levels were function associated intensity. Furthermore, fragility curves derived from incremental dynamic analysis (IDA) obtained time–history analyses using computer software and both aleatoric epistemic...

In this work, a simple strategy is proposed to improve the device performance of photodetector by modifying plasmonic nanoparticles onto surface semiconductors nanostructure. Both experimental analysis and theoretical simulation show that metal (AuNPs) exhibits obvious localized plasmon resonance (LSPR) which can trap incident light efficiently, leading enhanced photocurrents improved photoelectronic devices. It also observed AuNPs modified CdTeNW exhibit apparent sensitivity 510 nm light,...