Direct X-ray detectors based on metal halide perovskites and their derivatives exhibit high sensitivity low limit of detection (LoD). Compared with three-dimensional (3D) hybrid lead perovskites, low-dimensional A3Bi2I9 perovskite (A = Cs, Rb, NH4, CH3NH3(MA)) present better stability, greater environmental friendliness, comparable performance. Here, we report FA3Bi2I9 (FA= CH(NH2)2) single crystals (SCs) as a new member the series for detection, which were prepared by nucleation-controlled...

Progress towards high performance X-ray detection and dynamic imaging applications, including nondestructive inspection, homeland security, medical diagnostics, requires scintillators with a light yield, reasonable decay time, low cost, eco-friendliness. Recently, copper halide have drawn tremendous attention due to their outstanding radioluminescence performance. Here, we first employed β-Cs3Cu2Cl5 as high-performance scintillator, photoluminescence quantum yield (PLQY) of 94.6%, 34 000 ±...

The two-dimensional (2D) perovskites have drawn intensive attention due to their unique stability and outstanding optoelectronic properties. However, the debate surrounding spatial phase distribution band alignment among different 2D phases in quasi-2D perovskite has created complexities understanding carrier dynamics, hindering material device development. In this study, we employed highly sensitive transient absorption spectroscopy investigate dynamics of (BA)2(MA)n−1PbnI3n+1...

Numerous trap states and low conductivity of compact TiO2 layers are major obstacles for achieving high power conversion efficiency high-stability perovskite solar cells. Here we report an effective Na2S-doped layer, which can improve the layers, contact TiO2/perovskite interface, crystallinity layers. Comprehensive investigations demonstrate that Na cations increase while S anions change wettability thus improving passivate defects at TiO2/PVK interface. The synergetic effects dopants lead...

Understanding the nature of photogenerated carriers and their subsequent dynamics in semiconducting perovskites is important for development solar cell materials devices. However, most ultrafast dynamic measurements on perovskite were conducted under high carrier densities, which likely obscures genuine low densities illumination conditions. In this study, we presented a detailed experimental study density-dependent hybrid lead iodide from femtosecond to microsecond using highly sensitive...

Metal halide perovskite and its derivatives show great promise in X-ray detection. However, large-scale fabrication of high-quality thick films is still full challenges due to the complicated crystal nucleation process that always introduces lots cracks or pinholes final film. Here, a MA3Bi2I9 film was fabricated by cost-effective, scalable spraying process, MACl used as an additive effectively tune crystallization process. As result, dense constituted large grains obtained, which has high...

WRKY transcription factors (TFs) play an important role in regulating the mechanism of plant self-defense. However, function most TFs upland cotton (Gossypium hirsutum) is still unknown. Hence, studying molecular resistance to Verticillium dahliae great significance enhancing disease and improving its fiber quality. In this study, Bioinformatics has been used characterize WRKY53 gene family. we analyzed GhWRKY53 expression patterns different resistant cultivars treated with salicylic acid...

Organometal halide perovskite single crystals are one of the most promising radiation detection materials due to their unique advantages high absorption coefficient, long carrier diffusion length, and low defect density. However, severe ion migration in perovskites deteriorates X-ray performance under longtime high-field operating conditions. This work reports an effective additive chenodeoxycholic acid (CDCA), which can suppress improve operational stability FAPbBr3 (SCs) significantl. The...

The crystal quality limits the mobility-lifetime (μτ) product and further applications of perovskite single crystals (PSC) in high energy radiation detections regardless their attenuation coefficient. In this paper, high-quality controllable growth MAPbX3 PSCs is demonstrated using liquid-diffusion induced crystallization (LDSC) method. kinetics are modeled to demonstrate feasibility via keeping mass-transport-limited regime. rate confirmed theoretically experimentally be constant solely...

The ultrafast synthesis process combined with Ag doping gives rise to the formation of 2 Se nanofibers and multi-sized pores. Subsequently, high thermoelectric performance in Ag-doped PbSe can be achieved by morphology engineering.

With superior thermoelectric transport properties, chalcogenide-based materials are considered to be promising candidates for energy conversion. As compared the strategies enhancing performance, related research works focusing on endurance mechanisms during long-term working, however, insufficient and should systematically evaluated making broad applications. Specifically, systematic issues divided into mechanic, thermodynamic, kinetic sections could play a predominated role in challenging...

Substrate temperature affects the volatilization rate of solvents, and thus changes morphology crystallization process perovskite layers.

Fabricating perovskite single-crystal thin films (SCTFs) in controllable manner is the major challenge for promising potential applications optoelectronic devices. Although modifying substrate surface frequently used to realize controlled growth of SCTFs, it still unclear how condition affects crystallization process. In this work, we systemically investigated effects hydrophobicity indium tin oxide substrates on process MAPbBr3 SCTFs prepared by space-confined method. Comprehensive...

The halide perovskite X-ray detector can meet the urgent needs of low-dose medical imaging by X-rays. However, there is still a pressing challenge in lacking robust methods for large-scale fabrication high-quality films with tunable thickness. Here we report laminated polycrystalline MAPbI3 using solvent-free liquid molten-salt (PMS), that offers reduced toxic issue, scalable fabrication, and highly tunability film Nylon membrane was chosen as scaffold infiltration PMS, which simultaneously...

Shaogan Fuzi Decoction (SGFD), one of the classical prescriptions Chinese Medicine, has a long history in treatment rheumatoid arthritis (RA), but definitive studies on its efficacy and mechanism action are lacking. This study aims to elucidate pharmacodynamic role SGFD against RA potential mechanisms based combination network pharmacology experimental verification. The model rats was induced by intradermal injection bovine type Ⅱ collagen incomplete Freund's adjuvant at tail root....

The charge transport in quasi-2D perovskites limits their applications despite the superior stability and optoelectronic properties. Herein, a novel strategy is proposed to enhance by regulating 3D perovskite phase films. carbohydrazide (CBH) as an additive introduced into (PEA)

2D Ruddlesden-Popper (RP) perovskites have been intensively investigated due to their superior stability and outstanding optoelectrical properties. However, investigations on RP are mainly focused A-site substituted few reports X-site especially in X-ray detection field. Here, perovskite Cs2 Pb(SCN)2 Br2 polycrystalline wafers prepared systematically studied for detection. The obtained show a large resistivity of 2.0 × 1010 Ω cm, high ion activation energy 0.75 eV, small current drift 2.39...

Amine-functionalized adsorbents have attracted much attention in removing indoor CO2 to reduce the risk of human health. In current work, polyethyleneimine (PEI)-modified silica monolith (PEIx-silica) was synthesized through a sol–gel method using PEI with molecular weights 750,000, 25,000, and 10,000 as template agents. The N2 adsorption result revealed that PEIx-silica possesses mesoporous structure 25–45 nm pore size assembled by particles (60–80 nm), which decreased decrease weight....

Betavoltaic devices are very appealing to applications in out-space exploration, deep-sea facilities, and implantable medical for their ultralong lifetime high power density. The key further improve the betavoltaic device efficiency is find proper semiconductor materials with long carrier diffusion lengths having strong interactions β-particles. Halide perovskite would be a promising candidate material betavoltaics due length, defect tolerance, interaction β-particles, wide adjustable band...