Steric hindrance of long-chain ligands leads to abundant unpassivated dangling bonds on quantum dots (QDs), which significantly impair the efficiency and operational stability of QD light-emitting diodes (QLEDs), especially in ultra-small pixel devices. Professors Fushan Li and Hailong Hu at Fuzhou University have pioneered a "ligand reconstruction" strategy using zirconium acetylacetonate (Zr(acac)₄) to precisely repair the surface defects of QDs. This reconstruction strategy markedly enhances the efficiency and operational stability of QLEDs, and the resultant record-breaking performance metrics lay a solid foundation for the commercialization of high-resolution, high-performance QLED technology.

Temperature is a fundamental physical quantity. With the rapid development of stretchable electronics, transparent stretchable temperature sensors are in critical demand. However, performance retention under strain is a great challenge, and the influence of the electrode on the sensing performance is rarely reported.

A self-powered blue photodetector based on WS₂:Ag nanocomposites with Au/graphene asymmetric electrodes is reported. The localized surface plasmon resonance of Ag nanoparticles synergizes with high-energy excitons in WS₂, enhancing near-field absorption and hot-electron injection. Transient absorption spectroscopy reveals that the built-in electric field facilitates rapid carrier separation. Under zero bias, the device delivers a responsivity of 244 mA/W and an external quantum efficiency of 74.7%. It further demonstrates high-resolution (128 × 128) single-pixel imaging in both clear and turbid water, achieving a peak signal-to-noise ratio of 25.5 dB. This work offers a viable strategy for low-power underwater optical communication and high-visibility imaging.

Researchers have developed a breakthrough tandem electrode structure that integrates both anodic (NiO) and cathodic (W₁₈O₄₉) electrochromic materials onto a single substrate. By inserting a conductive ITO interlayer, the team successfully overcame the common problem of material interference, significantly speeding up response times and enhancing coloration efficiency. This innovation allows smart windows to switch seamlessly between transparent, brown, and blue states, providing dynamic control over both visible light and heat-producing near-infrared radiation for more energy-efficient buildings.

Violet phosphorus is a promising layered semiconductor, but its intrinsic charge-transport behavior has remained difficult to determine because device interfaces can strongly affect measurements. Researchers synthesized high-quality single-crystalline violet phosphorus by chemical vapor transport and fabricated van der Waals heterostructure field-effect transistors using full h-BN encapsulation and van der Waals graphite or pre-patterned bottom contacts to minimize fabrication-induced interface damage. The devices exhibited robust unipolar n-type conduction, ohmic-like output behavior, current on/off ratios approaching 10⁷ and ambient stability for more than 200 days, clarifying the inherent transport nature of violet phosphorus.