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Cu2ZnGeS4 (CZGS) and Cu2ZnGeSe4 (CZGSe) single crystalline nanowire arrays have been prepared via a convenient one-step nanoconfined solvothermal approach. The porous anodic aluminum oxide was used as a morphology directing template by offering nanospace in the AAO pores for confined solvothermal reaction. The structure, morphology, composition, and optical absorption properties of the as-prepared samples were characterized using X-ray powder diffraction, transmission electron microscopy, energy dispersive X-ray spectrometry, scanning electron microscopy, and a UV-vis spectrophotometer. The CZGS and CZGSe films are found to have obvious photoelectric response, indicating their potential in the application of photovoltaic devices.
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http://dx.doi.org/10.1021/la401531r | DOI Listing |
ACS Nano
September 2025
School of Microelectronics, Hefei University of Technology, Hefei 230009, China.
Near-infrared (NIR) narrowband photodetectors, featuring high sensitivity, excellent wavelength selectivity, and narrow full width at half-maximum (fwhm), enable efficient detection of specific NIR wavelengths and are widely used in optical communication, environmental monitoring, spectroscopy, and scientific research. In this study, we present a self-powered NIR photodetector based on a silicon nanowire (SiNW) array, exhibiting an ultranarrowband response centered at 1120 nm. The device employs a simple Schottky junction architecture.
View Article and Find Full Text PDFLangmuir
September 2025
College of Chemistry and Environmental Engineering, Yangtze University, Jingzhou 434023, Hubei, PR China.
Transition metal sulfides are promising electrocatalysts for water electrolysis. This work develops an innovative rapid low-temperature molten-salt template approach that enables one-step fabrication of free-standing Mo-doped sulfide nanowire arrays (Mo-NiS@NiS/NF) on nickel foam (NF) within merely 30 min, substantially reducing synthesis time compared to conventional methods. XRD and Raman analyses show that the doping of Mo makes the original NiS convert into NiS with higher catalytic activity.
View Article and Find Full Text PDFNanophotonics
August 2025
Departament d'Enginyeria Electrònica i Biomèdica, Universitat de Barcelona, 08028 Barcelona, Spain.
One-dimensional photonic crystal (1D-PhC) pillar cavities allow transducing mechanical pillar vibrations to the optical domain, thereby relaxing the requirements typically associated with mechanical motion detection. In this study, we integrate these geometries into a silicon-on-insulator photonics platform and explore their optical and mechanical properties. The 1D-PhC structures consist of a linear array of high aspect ratio nanopillars with nanometer-sized diameters, designed to enhance the interaction between transverse-magnetic (TM) polarized optical fields and mechanical vibrations and to minimize optical leaking to the substrate.
View Article and Find Full Text PDFNanomicro Lett
September 2025
iGaN Laboratory, School of Microelectronics, University of Science and Technology of China, Hefei, 230029, People's Republic of China.
Human action recognition (HAR) is crucial for the development of efficient computer vision, where bioinspired neuromorphic perception visual systems have emerged as a vital solution to address transmission bottlenecks across sensor-processor interfaces. However, the absence of interactions among versatile biomimicking functionalities within a single device, which was developed for specific vision tasks, restricts the computational capacity, practicality, and scalability of in-sensor vision computing. Here, we propose a bioinspired vision sensor composed of a GaN/AlN-based ultrathin quantum-disks-in-nanowires (QD-NWs) array to mimic not only Parvo cells for high-contrast vision and Magno cells for dynamic vision in the human retina but also the synergistic activity between the two cells for in-sensor vision computing.
View Article and Find Full Text PDFMicromachines (Basel)
August 2025
Instute of Semiconductor Technology, Technische Universität Braunschweig, 38106 Braunschweig, Germany.
In this study we report on the structural, mechanical, and electrical characterization of different structures of vertically aligned zinc oxide (ZnO) nanowires (NWs) synthesized using hydrothermal methods. By optimizing the growth conditions, scanning electron microscopy (SEM) micrographs show that the ZnO NWs could reach an astounding 51.9 ± 0.
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