Unraveling the Degradation and Air-Induced Healing Mechanisms of Halide Perovskites under Proton Irradiation.

As exceptional potential candidates for future-generation space photovoltaics, perovskite solar cells (PSCs) have been proven to be radiation-tolerant and recoverable under proton irradiation. Nevertheless, a key point, the influence of the atmosphere, has often been overlooked in ground-based irradiation experiments. Here, the atmosphere-dependent radiation tolerance and healing of perovskite materials under MeV proton irradiation are demonstrated by utilizing in situ electrical characterizations.

Prompt Hole Extraction Suppresses V Dissolution and Sustains Large-Area BiVO Photoanodes for Over 2100 h Water Oxidation.

Nanostructured bismuth vanadate (BiVO) is at the forefront of emerging photoanodes in photoelectrochemical tandem devices for solar water splitting owing to the suitable band edge position and efficient charge separation capability. However, the (photo)chemical corrosion involving V dissolution limits the long-term stability of BiVO. Herein, guided by DFT calculations, we introduce an ALD-derived NiO catalyst layer on BiVO to stabilize the surface Bi-O bonds, facilitate hole extraction, and thus suppress the V dissolution.

De-Pinning Fermi Level and Accelerating Surface Kinetics with an ALD Finish Boost the Fill Factor of BiVO Photoanodes to 44.

With the rapid development of performance and long-term stability, bismuth vanadate (BiVO ) has emerged as the preferred photoanode in photoelectrochemical tandem devices. Although state-of-the-art BiVO photoanodes realize a saturated photocurrent density approaching the theoretical maximum, the fill factor (FF) is still inferior, pulling down the half-cell applied bias photon-to-current efficiency (HC-ABPE). Among the major fundamental limitations are the Fermi level pinning and sluggish surface kinetics at the low applied potentials.

Carbon dots/TiO enhanced visible light-assisted photocatalytic of leachate: Simultaneous effects and Mechanism insights.

The persistence and potential fouling risks associated with humic substances and bacteria present in leachate have gained increasing attention. Therefore, developing efficient and environmentally compatible technologies for their removal is essential. This study presented the hydrothermal synthesis of a photocatalyst by coupling carbon dots (CDs) and bulk TiO (P25).

Solvent engineering of MAPbI perovskite thick film for a direct X-ray detector.

The emergence of organic-inorganic hybrid perovskites with a high μτ product and a high absorption coefficient has made it possible to adopt an aerosol-liquid-solid technology for direct X-ray detectors. The film quality from the ALS process is often compromised, especially on the film surface, when deposited in ambient conditions with uncontrolled humidity. Herein we develop a solvent engineering strategy in the ALS process to obtain high-quality MAPbI thick films.

Syntheses of η -Alkyl-η -Allyl-η -Cyclopentadienyl Cobalt(III) Complexes and Their Use in Low-temperature Atomic Layer Deposition of Cobalt-Containing Thin Films.

Herein, we report the design and scalable synthesis of three new Co(III) complexes, which have an unusual hydrocarbon η -alkyl-η -allyl-η -cyclopentadienyl ligation structure, from the reactions of readily available cobalt(II) compound CoCl (PPh ) and biomass material β-pinene via C-C bond activation. These Co(III) complexes are air-stable, fairly volatile, and thermally stable, so they are excellent candidates as the metal precursors for the vapor deposition of cobalt-containing thin films. As a demonstration, we show that the Co(III) complex of [(3'-5'-η,1-σ)-methylene(2,2,4-trimethyl-4-cyclohexene-1,3-diyl)](η -methylcyclopentadienyl)Co (i.

Facet-Selective Deposition of Ultrathin Al O on Copper Nanocrystals for Highly Stable CO Electroreduction to Ethylene.

Catalysts based on Cu nanocrystals (NCs) for electrochemical CO -to-C conversion with high activity have been a subject of considerable interest, but poor stability and low selectivity for a single C product remain obstacles for realizing sustainable carbon-neutral cycles. Here, we used the facet-selective atomic layer deposition (FS-ALD) technique to selectively cover the (111) surface of Cu NCs with ultrathin Al O to increase the exposed facet ratio of (100)/(111), resulting in a faradaic efficiency ratio of C H /CH for overcoated Cu NCs 22 times higher than that for pure Cu NCs. Peak performance of the overcoated catalyst (Cu NCs/Al O -10C) reaches a C H faradaic efficiency of 60.

Atomic layer deposited nickel sulfide for bifunctional oxygen evolution/reduction electrocatalysis and zinc-air batteries.

Rechargeable Zn-air batteries are a promising type of metal-air batteries for high-density energy storage. However, their practical use is limited by the use of costly noble-metal electrocatalysts for the sluggish kinetics of the oxygen reduction reaction (ORR) and oxygen evolution reaction (OER) occurred at the air electrode of the Zn-air batteries. This work reports a new non-precious bifunctional OER/ORR electrocatalyst of NiS/carbon nanotubes (CNTs), which is made by atomic layer deposition (ALD) of nickel sulfide (NiS) on CNTs, for the applications for the air electrode of the Zn-air batteries.

Bifunctional Ag/C3N4.5 composite nanobelts for photocatalysis and antibacterium.

Multiple functions can be achieved in carbon nitride-based composite nanomaterials by tuning their components and structures. Here, we report on a large-scale synthesis of novel bifunctional Ag/C3N4.5 composite nanobelts (CNBs) with efficient photocatalytic and antibacterial activity.