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Prof. Yichun Liu et al. develop F&Al co-doped ZnO transparent conductive films that withstand temperatures above 500 °C and are ideal for extreme optoelectronic devices.

A flexible perovskite photodetector with room-temperature self-healing function without external trigger is developed. A crosslinked polyurethane network is filled to the grain boundary of perovskite film, which not only improves the crystal quality of perovskite and mechanical stability but also enables flexible perovskite photodetectors to self-heal at room temperature.

Emerging freestanding membrane technologies, especially using inorganic thermoelectric materials, demonstrate the potential for advanced thermoelectric platforms. However, using rare and toxic elements during material processing must be circumvented. Herein, we present a scalable method for synthesizing highly crystalline CuS membranes for thermoelectric applications. By sulfurizing crystalline Cu, we produce a highly percolated and easily transferable network of submicron CuS rods. The CuS membrane effectively separates thermal and electrical properties to achieve a power factor of 0.50 mW m⁻¹ K⁻² and thermal conductivity of 0.37 W m⁻¹ K⁻¹ at 650 K (estimated value). This yields a record-high dimensionless figure-of-merit of 0.91 at 650 K (estimated value) for covellite. Moreover, integrating 12 CuS devices into a module resulted in a power generation of ~4 μW at ΔT of 40 K despite using a straightforward configuration with only p-type CuS. Furthermore, based on the temperature-dependent electrical characteristics of CuS, we develop a wearable temperature sensor with antibacterial properties.

The all-solid-state battery (ASSB) concept promises increases in energy density and safety; consequently recent research has focused on optimizing each component of an ideal fully solid battery. However, by doing so, one can also lose oversight of how significantly the individual components impact key parameters. Although this review presents a variety of materials, the included studies limit electrolyte-separator choices to those that are either fully commercial or whose ingredients are readily available; their thicknesses are predefined by the manufacturer or the studies in which they are included. However, we nevertheless discuss both electrode materials. Apart from typical materials, the list of anode materials includes energy-dense candidates, such as lithium metal, or anode-free approaches that are already used in Li-ion batteries. The cathode composition of an ASSB contains a fraction of the solid electrolyte, in addition to the active material and binders/plasticizers, to improve ionic conductivity. Apart from the general screening of reported composites, promising composite cathodes together with constant-thickness separators and metallic lithium anodes are the basis for studying theoretically achievable gravimetric energy densities. The results suggest that procurable oxide electrolytes in the forms of thick pellets (>300 μm) are unable to surpass the performance of already commercially available Li-ion batteries. All-solid-state cells are already capable of exceeding the performance of current batteries with energy densities of 250 Wh kg⁻¹ by pairing composite cathodes with high mass loadings and using separators that are less than 150 μm thick, with even thinner electrolytes (20 μm) delivering more than 350 Wh kg⁻¹.

A novel strategy explores the reversible modulation of visible and NIR luminescence in rare earth ion-doped photochromic bismuth-based glasses for information encryption and multi-dimensional optical storage.

Breakthroughs brought about by two-dimensional (2D) materials in the field of photodetection have opened up new possibilities in infrared imaging. However, challenges still exist in fabricating high-density detector arrays using such materials, which are essential for traditional imaging systems. In this study, we present a state-of-the-art computing imaging system that utilizes a MoTe₂/Si self-powered photodetector coupled with flexible Hadamard modulation algorithms. This system demonstrates remarkable capability to produce high-quality images in the shortwave infrared (SWIR) band, surpassing the capabilities of devices based on alternative material systems. The exceptional infrared imaging capability primarily stems from the MoTe₂/Si photodetector's inherent features, including an ultra-wide spectral range (265–1550 nm) and extremely high sensitivity (linear dynamic range (LDR) up to 123 dB, responsivity (R) up to 0.33 A W^–1, external quantum efficiency (EQE) up to 43% and a specific detectivity (D*) exceeding 2.9 × 10¹¹ Jones). Moreover, the imaging system demonstrates the ability to achieve high-quality edge imaging of objects in the SWIR band (1550 nm), even in strong scattering environments and under low sampling rate conditions (sampling rate of 25%). We believe that this work will effectively advance the application scope of 2D materials in the field of computational imaging in SWIR bands.

Static rechargeable zinc-iodine (Zn-I₂) batteries are superior in safety, cost-effectiveness, and sustainability, giving them great potential for large-scale energy storage applications. However, the shuttle effect of polyiodides on the cathode and the unstable anode/electrolyte interface hinder the development of Zn-I₂ batteries. Herein, a self-segregated biphasic electrolyte (SSBE) was proposed to synergistically address those issues. The strong interaction between polyiodides and the organic phase was demonstrated to limit the shuttle effect of polyiodides. Meanwhile, the hybridization of polar organic solvent in the inorganic phase modulated the bonding structure, as well as the effective weakening of water activity, optimizing the interface during zinc electroplating. As a result, the Zn-I₂ coin cells performed a capacity retention of nearly 100% after 4000 cycles at 2 mA cm⁻². And a discharge capacity of 0.6 Ah with no degradation after 180 cycles was achieved in the pouch cell. A photovoltaic energy storage battery was further achieved and displayed a cumulative capacity of 5.85 Ah. The successfully designed energy storage device exhibits the application potential of Zn-I₂ batteries for stationary energy storage.

Hardware neuromorphic computing based on phase-change random access memories brings about a spring of artificial intelligence.