The simultaneous optimization of the bulk and surface characteristics of photoelectrodes is essential to maximize their photoelectrochemical(PEC)*** report a novel one-pot hydrothermal synthesis of textured and surfac...
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The simultaneous optimization of the bulk and surface characteristics of photoelectrodes is essential to maximize their photoelectrochemical(PEC)*** report a novel one-pot hydrothermal synthesis of textured and surface-reconstructed BiVO_(4)photoanodes(ts-BVO),achieving significant improvements in PEC water *** controlling precursor molarity and ethylene glycol(EG)addition,we developed a stepwise dual reaction(SDR)mechanism,which enables simultaneous bulk texture development and surface *** optimized CoBi/ts-BVO photoanode exhibited a photocurrent density of 4.3 mA∙cm^(−2)at 1.23 V *** hydrogen electrode(RHE)with a high Faradaic efficiency of 98%under one sun *** with nontextured BiVO_(4),the charge transport efficiency increased from 8%to 70%,whereas the surface charge transfer efficiency improved from 9%to 85%.These results underscore the critical role of both bulk and surface engineering in enhancing PEC *** findings offer a streamlined approach for improving the intrinsic properties of photoanodes in solar water splitting.
The focus of this study is on investigating the vanadyl 2,9,16,23-tetraphenoxy-29H, 31H-phthalocyanine(VOPc Ph O)and its blend with o-xylenyl C60 bis-adduct(OXCBA), for use as a lateral ultraviolet organic photodetect...
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The focus of this study is on investigating the vanadyl 2,9,16,23-tetraphenoxy-29H, 31H-phthalocyanine(VOPc Ph O)and its blend with o-xylenyl C60 bis-adduct(OXCBA), for use as a lateral ultraviolet organic photodetector. The research focuses on improving dark current reduction, which is a challenge in lateral organic photodetector. By integrating the OXCBA, low dark current values of 4.83 nA·cm^(-2)(D_(shot)^(*)= 1.414 × 10^(11)Jones) have been achieved as compared to the stand-alone VoPcPhO device of 14.06 nA·cm^(-2). The major contributing factors to dark current reduction are due to the efficient charge transfer at the photoactive-electrode interface, the deep highest occupied molecular orbital(HOMO)level of OXCBA, which leads to favorable energy level alignments hindering hole injection, and the occurrence of bulk heterojunction vertical phase segregation between VOPcPhO and OXCBA. These findings shed light on the relationship between the organic photoconductor's material composition, morphology, and performance metrics and open new avenues for metal phthalocyanine-based lateral ultraviolet organic photodetectors with low dark current and enhanced performance.
Scintillator is a key material for the development of X-ray detectors, which has a promising application in medical imaging, security inspection and industrial non-injury detection. The majority of scintillators curre...
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The preformed cluster model(PCM)is applied to investigate the heavy particle radioactivity(HPR)and spontaneous fission(SF)processes for even-Z superheavy nuclear *** proximity potentials are used to calculate the deca...
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The preformed cluster model(PCM)is applied to investigate the heavy particle radioactivity(HPR)and spontaneous fission(SF)processes for even-Z superheavy nuclear *** proximity potentials are used to calculate the decay half-lives of Z=112-120 *** fragmentation potential and preformation distribution suggest that SF is the major contributor up to Z=114,and HPR starts competing for heavier *** heavy cluster emission is supported by Pb-magicity,whereas SF is reinforced owing to the deformations of fission *** heavy cluster decay half-lives(log_(10)T_(C))are calculated using the PCM and are compared with the estimates of the analytical super asymmetric fission(ASAF)*** calculated log_(10)T_(C) values agree well with the ASAF measurements when using the Prox-00 and Mod Prox-00 versions of ***,Prox-77,Prox-88,and Prox-BW-91 are not appropriate to address the log_(10)T_(C) for Z≥116 *** resolve this,we include Z-dependence in the radius ***,the half-lives match the ASAF data after the inclusion of *** branching ratios are also calculated for superheavy nuclei and compared with the estimates of unified description(UD)formula,universal curve(UNIV),universal decay law(UDL),Horoi formula,and ASAF ***,the SF half-lives(T_(SF))of ^(282) Cn,^(284)Cn,^(284)Fl,and ^(286)Fl superheavy nuclei are estimated through various proximity *** them,Prox-oo is appropriate for addressing the experimental *** this potential,the SF half-lives are estimated through the PCM for Z=116-120 isotopes at different necklength ***,the scaled total kinetic energy(TKE)values are compared with the available data.
The research on the synthesis of three-dimensional (3D) porous structures has garnered significant interest among scholars. In this study, ZnSnO3/ZnO heterostructures are prepared using butterfly wings as biotemplates...
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With the increasing use of micro-manufactured devices and the demand for low-cost fabrication techniques, this study presents a simple and scalable surface polishing method for laser etched acrylic using WELD-ON 4 acr...
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Oxide materials with a non-centrosymmetric structure exhibit bulk photovoltaic effect(BPVE)but with a low cell *** the past few years,relatively larger BPVE coefficients have been reported for two-dimensional(2D)layer...
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Oxide materials with a non-centrosymmetric structure exhibit bulk photovoltaic effect(BPVE)but with a low cell *** the past few years,relatively larger BPVE coefficients have been reported for two-dimensional(2D)layers and stacks with asymmety-induced spontaneous ***,we report a crucial breakthrough in boosting the BPVE in 3R-MoS2 by adopting edge contact(EC)geometry using bismuth semimetal *** clear contrast to the typically used top contact(TC)geometry,the EC metal which strongly adheres to the edges and the subtrates can induce a pronounced tensile strain to the 3R-MoS2,and the lateral contact geometry allows to completely access to in-plane polarization from underneath layers reachable by light,leading to>100 times of BPVE enhancement in *** further design a 3R-MoS2/WSe2 heterojunction to demonstrate constructive coupling of BPVE with the conventional photovoltaic effect,indicating their potential in photodetectors and photovoltaic devices.
Two-dimensional(2D)transition metal nitrides(TMNs)have garnered significant attention in fields such as energy storage and nanoelectronics due to their unique electrical properties,high chemical stability,and excellen...
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Two-dimensional(2D)transition metal nitrides(TMNs)have garnered significant attention in fields such as energy storage and nanoelectronics due to their unique electrical properties,high chemical stability,and excellent mechanical *** polycrystalline 2D TMNs films,grain boundaries(GBs)are inevitable structural defects that could play a crucial role in determining the material's *** rapid optical visualization methods is essential for obtaining large-scale information on the distribution of ***,the rapid visualization of GBs in 2D TMNs,as well as the impact of GBs on the material's electrical properties,has never been previously *** this study,we demonstrate the growth of monolayer tungsten nitride crystals on SiO_(2)/Si substrates by chemical vapor deposition(CVD).High-resolution transmission electron microscopy reveals the presence of GBs at the junctions of twisted grains.A wet-etch process utilizing buffered oxide etchant(BOE)enables rapid and effective visualization of these GBs with optical *** analyzing grains with different twist angles,we find that GBs at specific angles demonstrate increased stability during *** measurements revealed that tilted GBs hinder electrical transport,with GBs of a 62°twist angle showing sheet conductance nearly half that within the monolayer *** work not only provides insights into GBs in monolayer tungsten nitride but also lays the groundwork for exploring GBs-related properties in other 2D TMNs.
Lithium-sulfur(Li-S)batteries are considered as strong competitors for next-generation energy storage because of their high theoretical energy ***,some challenges,such as shuttle effect of lithium polysulfides(LiPSs),...
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Lithium-sulfur(Li-S)batteries are considered as strong competitors for next-generation energy storage because of their high theoretical energy ***,some challenges,such as shuttle effect of lithium polysulfides(LiPSs),volume expansion of sulfur during charge/discharge process and poor conductivity of the cathode,hindered their commercial *** this paper,an excellent sulfur host material,the titanium single atom(TiSA)-anchored mesoporous N-incorporated carbon(TiSA-NC)was successfully *** introduction of TiSAs onto the NC textures optimized their electronic structures including the charge distribution between the constituent atoms and the total density of states(TDOS)near the Fermi ***,the button battery constructed by TiSA-NC delivered impressive energy storage performance:a high reversible capacity of 1077 mAh·g^(-1) at 0.1 C;an outstanding rate capacity of 541 mAh·g^(-1) at 3 C;a superior long-term stability with a capacity fading rate of 0.053%per cycle for 500 cycles at 0.5 *** work provided an effective strategy for manufacturing high performance Li-s batteries by designing and constructing single atom catalysts.
Superconducting critical temperature is the most attractive material property due to its impact on the applications of electricity transmission,railway transportation,strong magnetic fields for nuclear fusion and medi...
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Superconducting critical temperature is the most attractive material property due to its impact on the applications of electricity transmission,railway transportation,strong magnetic fields for nuclear fusion and medical imaging,quantum computing,*** ability to predict its value is a constant pursuit for condensed matter *** developed a new hierarchical neural network(HNN)AI algorithm to resolve the contradiction between the large number of descriptors and the small number of datasets always faced by neural network AI approaches to materials *** this new HNN-based AI model,a much-increased number of 909 universal descriptors for inorganic compounds,and a dramatically cleaned database for conventional superconductors,we achieved high prediction accuracy with a test R^(2)score of 95.6%.The newly developed HNN model accurately predicted T_(c)of 45 new high-entropy alloy superconductors with a mean absolute percent error below 6%compared to the experimental *** demonstrated a significant potential for predicting other properties of inorganic materials.
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