Electrospun Cr3⁺activated YAG nanofibers: photoluminescence mechanism and morphology correlation
摘要
This work explores the preparation, characterization, and luminescent properties of Chromium (Cr3⁺)-doped Yttrium Aluminum Garnet (YAG) nanofibers, which are synthesized using the electrospinning technique. The study highlights Cr3⁺ ions as effective dopants due to their stable luminescence, especially in the near-infrared range, and emphasizes YAG's excellent structural compatibility with Cr3⁺. Various characterization techniques, including X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), scanning electron microscopy (SEM), transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS), and photoluminescence spectroscopy, are employed to analyze the crystalline structure, chemical composition, morphology, and luminescent behaviour of the nanofibers. The results show that Cr3⁺-doped YAG nanofibers exhibit strong photoluminescence with a prominent emission peak at 678 nm, suitable for applications in bioimaging, security, and advanced photonics. The study concludes by demonstrating the potential of these nanofibers as high-performance materials for future technological advancements.