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In article number 2001534, Liang Shen and co‐workers demonstrate a sensitive and stable Sn‐Pb perovskite photodetector, employing phenethylammonium iodide to complete defects passivation aiming the top and bottom of films. The double‐sided surface passivation engineering can promote the grain growth, reduce the density of trap states and improve surface hydrophobicity. Finally, it realizes infrared...
Tin(Sn)‐based perovskite is currently considered one of the most promising materials due to extending the absorption spectrum and reducing the use of lead (Pb). However, Sn2+ is easily oxidized to Sn4+ in atmosphere, causing more defects and degradation of perovskite materials. Herein, double‐sided interface engineering is proposed, that is, Sn‐Pb perovskite films are sandwiched between the phenethylammonium...
Low‐energy facets on CdS allomorph junctions with optimal phase ratio are designed to boost charge directional transfer for photocatalytic H2 fuel evolution. Fermi energy level difference between low‐energy facets as driving force promotes electrons directional transfer to hexagonal CdS(102) facet and holes to cubic CdS(111) facet. The optimal allomorphs CdS presents superior photocatalytic H2 evolution...
In article number 1907029, Jianying Huang, Jun Hu, Yuekun Lai, Yuxin Tang, and co‐workers reveal a correlation between the oxygen evolution reaction overpotential and the cobalt‐based electrode composition in an electrospinning “Microparticles‐in‐Spider Web” superstructure electrode, leading to remarkable electrocatalytic activity.
Sluggish kinetics of the multielectron transfer process is still a bottleneck for efficient oxygen evolution reaction (OER) activity, and the reduction of reaction overpotential is crucial to boost reaction kinetics. Herein, a correlation between the OER overpotential and the cobalt‐based electrode composition in a “Microparticles‐in‐Spider Web” (MSW) superstructure electrode is revealed. The overpotential...
Organic–inorganic hybrid perovskite (OIHP) photodetectors have presented unprecedented device performance mainly owing to outstanding material properties. However, the solution‐processed OIHP polycrystalline thin films with defective surface and grain boundaries always impair the key parameter of photodetectors. Herein, a nonfullerene passivation layer exhibits more efficient passivation for OIHP...
In article number 1903159, Qingliang Feng, Tianyou Zhai, Hua Xu, and co‐workers demonstrate the linear dichroism of trilayer 1T′ MoTe2 single crystals. The anisotropic complex refractive indices of 1T′ MoTe2 are experimentally obtained using Pinier equation analysis. This work opens up an opportunity to investigate the optical application of anisotropic semimetal 2D materials.
Semimetal 1T′ MoTe2 crystals have attracted tremendous attention owing to their anisotropic optical properties, Weyl semimetal, phase transition, and so on. However, the complex refractive indices (n‐ik) of the anisotropic semimetal 1T′ MoTe2 still are not revealed yet, which is important to applications such as polarized wide spectrum detectors, polarized surface plasmonics, and nonlinear optics...
In article number 1901650, Jia Liang, Jun Lou, and co‐workers synthesize lead‐free double perovskite Cs2SnX6 (X = Br, I) with a well‐defined vacancy‐ordered defect‐variant crystal structure via a facile hydrothermal method. The as‐obtained perovskite displays excellent stability against moisture, light, and high‐temperature.
Long‐term instability and possible lead contamination are the two main issues limiting the widespread application of organic–inorganic lead halide perovskites. Here a facile and efficient solution‐phase method is demonstrated to synthesize lead‐free Cs2SnX6 (X = Br, I) with a well‐defined crystal structure, long‐term stability, and high yield. Based on the systematic experimental data and first‐principle...
In the hydrogen evolution reaction (HER), energy‐level matching is a prerequisite for excellent electrocatalytic activity. Conventional strategies such as chemical doping and the incorporation of defects underscore the complicated process of controlling the doping species and the defect concentration, which obstructs the understanding of the function of band structure in HER catalysis. Accordingly,...
A novel method for preparing durable superamphiphobic fabrics is reported, which involves preapplying a solution consisting of perfluoroalkyl acrylate, epoxide‐containing silane, and silica nanoparticles onto fabric and subsequent argon‐plasma treatment. The coated fabrics show superphobic to both water and oil fluids (surface tension >21.5 mN m−1). The coating is durable to withstand repeated...
Herein, a versatile and sensitive colorimetric sensor for Hg2+ based on aptamer–target specific binding and target‐mediated growth of AuNPs is reported. The 15 T bases are first designed to detect Hg2+ through T–Hg2+–T coordination. Aptamer–target binding results in the desorption of the aptamer from AuNP surface, the remaining aptamers adsorbed on AuNP surface trigger the growth of AuNPs with morphologically...
Directional fluid motion driven by the surface property of solid substrate is highly desirable for manipulating microfluidic liquid and collecting water from humid air. Studies on such liquid motion have been confined to dense material surfaces such as flat panels and single filaments. Recently, directional fluid transport through the thickness of thin porous materials has been reported by several...
In article number 1601070, T. Lin and co‐workers summarize the research progress in directional fluid transport driven by the surface property of thin porous materials. The review article covers materials preparation, basic properties associated with directional fluid transport, and their application development.
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