Denghui Xu

Although the Zintl compound NaMgBi has been synthesized in the tetragonal PbFCl‐type phase, its accurate electronic structure is still unknown. This calculation is difficult because the conventional density functional theory (DFT) underestimates the bandgap, and the strong spin–orbit coupling (SOC) decreases the bandgap as well. Consequently, the usual DFT+SOC calculation predicts a false semimetallic band structure. Here, the GW approximation is used to calculate the accurate electronic structure of NaMgBi including the SOC. Our eigenvalue self‐consistent () results show that NaMgBi has a direct bandgap of 0.47 eV instead of an indirect one predicted by the DFT calculations neglecting the SOC. Although our calculations based on the results indicate that NaMgBi is trivial topologically, the solution of the Bethe–Salpeter equation shows that its exciton binding energy is 0.14 eV and the excitonic absorption coefficient can reach 10–10 in the infrared and visible light range, making it a promising optoelectronic material.

Unbalanced charge transport is a critical bottleneck in non‐fullerene organic solar cells. Here, we present a strategy to synergistically overcome this limitation in layer‐by‐layer (LbL) processed D18/L8‐BO devices by incorporating two‐dimensional SnSe ₂ nanoflakes at the donor/acceptor heterojunction. The dispersed SnSe ₂ acts as discrete charge‐transporting bridges between the D18 and L8‐BO layers, optimizing interfacial energetics, facilitating exciton dissociation, accelerating electron transport, and suppressing recombination. Consequently, the electron mobility is significantly enhanced while the hole/electron mobility ratio approaches unity, signifying balanced carrier transport. Thus, the power conversion efficiency increases markedly from 18.92% to 20.03%, with improved short‐circuit current density and fill factor. This work demonstrates a novel strategy of integrating 2D n‐type semiconductors with the LbL systems and provides an effective pathway toward high‐efficiency organic solar cells with balanced carrier transport and boosted exciton dissociation.

The advancement of global sustainable agriculture is currently impeded by the dual challenges of energy-intensive industrial nitrogen fixation and the persistent accumulation of agro-environmental pollutants. Bioelectrocatalysis has emerged as a transformative solution to these issues by synergizing the exquisite selectivity of biological catalysts with the controllability of renewable electricity-driven systems. However, the practical deployment of bioelectrocatalytic technologies is fundamentally constrained by kinetic bottlenecks associated with interfacial electron transfer (ET) between biocatalysts and solid electrodes. This review systematically summarizes recent advances in bioelectrocatalytic materials, with a specific focus on interface engineering strategies designed to overcome energy barriers and optimize both Direct Electron Transfer (DET) and Mediated Electron Transfer (MET) pathways. Furthermore, we critically examine the application of these systems in electricity-driven nitrogen fertilizer synthesis, real-time environmental sensing, and pollutant remediation. Finally, future perspectives on integrating synthetic biology and advanced material design are discussed to accelerate the development of next-generation technologies for green agriculture and ecological preservation.

A semi-transparent organic solar cell with the trace-doped acceptor layer has achieved a power conversion efficiency (PCE) of 12.98% with an average visible transmittance (AVT) of 27.65% and a light utilization efficiency (LUE) of 3.72%.

In modern agricultural lighting, Mn⁴⁺‐doped red phosphors synthesized via high‐temperature solid‐state method play a critical role in enhancing plant photosynthesis and photomorphogenesis, addressing the growing demand for efficient and sustainable plant cultivation technologies. Herein, a novel red phosphor, SrMgGaAl₉O₁₇:Mn⁴⁺, Bi³⁺(SMGA:Mn⁴⁺, Bi³⁺), designed for plant‐growth light‐emitting diodes (LEDs), has been reported. Under excitation at the optimal wavelength of 335 nm, the Mn⁴⁺ ions exhibit a broad red emission band (600–700 nm). Through Bi³⁺ co‐doping, the emission intensity of SMGA:Mn⁴⁺ is significantly enhanced without additional luminescence from Bi³⁺ itself, as confirmed by absorption, excitation, and emission spectral analyses. When the prepared material is encapsulated with an LED chip, its broad red emission band exhibits excellent spectral overlap with the absorption curve of plant pigments, demonstrating great potential as a red‐emitting component in LED systems. Thus, Bi³⁺ as a non‐luminescent sensitizer playing a key role in enhancing Mn⁴⁺ luminescence, providing a simple and efficient strategy for developing high‐performance red phosphors for agricultural lighting applications.

18.92% efficiency of D18:L8-BO organic solar cells achieved by regulating the solvent evaporation process using CF : Tol mixed solvent.

Organic–inorganic hybrid halides and their analogs that exhibit efficient broadband emission from self-trapped excitons (STEs) offers an unique pathway towards realization of highly efficient white light sources for lighting applications. An appropriate dilution of ns² ions into a halide host is essential to produce auxiliary emissions. However, the realization of ns² cation-based halides phosphor that can be excited by blue light-emitting diode (LED) is still rarely reported. In this study, a zero-dimensional Te-based single crystal (C₈H₂₀N)₂TeCl₆ was synthesized, which exhibits a yellow-orange emission centered at 600 nm with a full width at half maximum of 130 nm upon excitation under 437 nm. Intense electron–phonon coupling was confirmed in the (C₈H₂₀N)₂TeCl₆ single crystal and the light emitting mechanism is comprehensively discussed. The results of this study are pertinent to the emissive mechanism of Te-based hybrid halides and can facilitate discovery of unidentified metal halides with broadband excitation features.