Tayebeh Ameri

With organic solar cells surpassing 20% efficiency, the focus is shifting toward understanding the more complex mechanisms in ternary blends. This work investigates the distinct working principles of ternary organic solar cells based on a polymer donor (D) and a nonfullerene acceptor (NFA), with a fullerene acceptor (FA) as the third component. A systematic comparison between ternary D:NFA:FA systems, with different components and compositions, and D:NFA:NFA systems was conducted. In all systems, the open‐circuit voltage increased with a higher fullerene ratio, correlating with the fullerene's LUMO position, indicating its involvement in charge transfer (CT) state formation. Various analytical methods and simulations reveal that the investigated D:NFA:FA systems follow an alloy model, where the CT state is delocalized over both acceptors, even in systems with strong surface energy differences between the acceptors. Notably, recombination behavior is largely unaffected by the nature of the third component and is primarily linked to the CT state energy. Based on the internal quantum efficiency characteristics, we propose that the positive effect of fullerenes as third components arises not from reduced nonradiative recombination as often suggested but from more efficient exciton splitting. image

Ultralow-bandgap TIIG-Se-DFT enables RoHS-compliant, solution-processed SWIR photodetectors with high detectivity and minimal fabrication complexity.

Self‐organized neuromorphic nanogranular networks that mimic the switching dynamics of biological neural networks are promising for next‐generation brain‐inspired computing architectures. Despite recent advances, strategies to lower their switching threshold, and understanding of the influence of light on their switching dynamics, which are key aspects for energy‐efficient and multifunctional device operation, remains limited. Here, a strategy is introduced to lower the switching threshold, and the optical sensitivity of the nanoparticle networks (NPNs) is explored. Silver (Ag) NPNs are fabricated via surfactant‐free deposition from a gas aggregation cluster source. One network is coated with poly(1,3,5‐trivinyl‐1,3,5‐trimethyl‐cyclosiloxane) (pV3D3) using initiated chemical vapor deposition (iCVD), producing Ag/pV3D3 NPN with enhanced morphological stability and a significantly reduced switching threshold of 0.5 V compared to uncoated Ag NPNs (3 V). Time‐series measurements showed indications that the switching activity of Ag/pV3D3 NPNs can be modulated by visible light, with blue light irradiation showing the largest enhancement in switching events compared to the dark, unilluminated state. These findings establish a pathway toward low‐power, light‐tunable, self‐organized nanogranular networks for neuromorphic computing applications.

ZIF-8 provides accessible channel to small molecules like hydrogen to pass through the pores to interact at the CuO:Al surface. The interaction strength of VOCs with ZIF-8 is defined by the electronic polarizability of tested VOCs.

Detection and degradation monitoring of micro- and nano-sized PVC via PIERS on Ag NF-TiO ₂ platform under continuous UV irradiation.

An editorial introducing the themed collection on advances in nanocrystalline materials, published in Nanoscale and Nanoscale Advances.

Antimony chalcogenides represent a promising thin-film solar cell technology, offering inherently high stability, and with the potential to approach the Shockley–Queisser efficiency limit of ∼33%.