Ultrafast nonlinear optical properties and carrier dynamics of silver nanoparticle-decorated ZnO nanowires

Abstract

Silver (Ag) nanoparticle-decorated zinc oxide (ZnO) nanowires (Ag–ZnO) have been successfully synthesized by chemical vapour deposition and the magnetron sputtering method.

Two-step strategy, growth mechanism and optical properties of plasmonic Ag-modified ZnO nanomaterials

“…1b, b i , c and c i , the AZO NWs and AZO NFw were prepared on quartz substrates using two-step CVD and MS and two-step HT and MS strategies, respectively, and the preparation procedure was the same as the reported literature method. 34,35 The surface morphology of the AZO nanomaterials was characterized by using eld emission scanning electron microscopy (FE-SEM, Hitachi SEM, model Quanta 200F), atomic force microscopy (AFM) and transmission electron microscopy (TEM, FEI Tecnai F20). The crystal structures and elemental contents of the AZO nanomaterials were studied using X-ray diffractometry (XRD, Siemens D5000) and energy dispersive Xray spectroscopy (EDS, Hitachi SEM, model Quanta 200F), respectively.…”

“…O. Długosz et al 24 synthesized ZnO-Ag NPs using the continuous microwave method and studied the structure, crystallinity and photocatalytic properties of the sample modied with metallic Ag. In previous studies by our group, AZO nanowires (NWs) and nanoowers (NFw) were synthesized using a two-step CVD composite magnetron sputtering (MS) method and a two-step HT composite MS method, 34,35 respectively. The growth structures and linear and nonlinear optical properties of both were investigated.…”

Methodical engineering of defects in MnXZn1-X O(x = 0.03, and 0.05) nanostructures by electron beam for nonlinear optical applications: A new insight

“…It is ob-served that the transmittance curve exhibits a clear valley at the focus which can be attributed to RSA, indicating positive absorption non-linearity. A combination of ESA and TPA can be a more probable reason behind the presence of RSA mechanism in all the samples [46]. The most significant application of RSA is in optical limiting (OL) devices that shield sensitive optical components, including the human eye from laser-induced damage [47,48].…”

“…The excited electrons may also exhibit transitions to defect level by the mechanism of non-radiative relaxation within the ns time scale. The electrons in defect level can be further excited to the conduction band state which results in the process known as the excited state absorption (ESA) which in turn results in RSA mechanism ob-served in the investigated films [46].…”

Enhancement of Photoelectrochemical Performance of Ag@ZnO Nanowires: Experiment and Mechanism

“…In a previous report, uniform silver nanoparticlesdecorated ZnO (Ag@ZnO) nanowires composite which were successfully synthesized by two-step CVD and MS method are reported [54,55]. We studied the structure and optical properties of Ag@ZnO nanowires by magnetron sputtering method at sputtering time of 80, 100, and 120 s. However, there are no detail reports on the study of deposition parameters, which will impact on the film properties.…”