Ehsan Motallebi Aghkonbad, Akbar Jafari, M. M. Aghgonbad
{"title":"The Optical and Structural Properties of Cu Nanoparticles: Graphene\u0000Prepared by Pulsed Laser Ablation in Deionized Water","authors":"Ehsan Motallebi Aghkonbad, Akbar Jafari, M. M. Aghgonbad","doi":"10.2174/0122106812276636231228043816","DOIUrl":"https://doi.org/10.2174/0122106812276636231228043816","url":null,"abstract":"\u0000\u0000In this paper, graphene and copper oxide nanoparticles and graphene-based\u0000copper oxide nanoparticles have been produced by means of a pulsed laser ablation process (PLA) in\u0000a deionized water solution.\u0000\u0000\u0000\u0000The composition ratio of materials has been investigated in the structure of the prepared\u0000materials and their optical properties. The absorbance of the samples was obtained by the UV-VIS\u0000single beam spectrophotometer in the wavelength range of 290 to 800 nm. Spectroscopic ellipsometry method was used to investigate the linear optical properties of the samples including the real and\u0000imaginary parts of refractive index and dielectric function of the samples. The preferred model in the\u0000dielectric function modeling was Tauc-Lorentz. Also, the energy band gap of the samples has been\u0000calculated using Tauc relation. In addition, the nonlinear optical properties of graphene based copper\u0000oxide have been studied by Z-scan technique. Structure of the samples was studied using TEM image.\u0000\u0000\u0000\u0000The most and the least absorbance at 532 nm wavelength, and also band gap energy belong\u0000to 1.4 ml Gr-0.6 ml Cu and copper oxide, respectively.\u0000\u0000\u0000\u0000The band gap energies of the samples were calculated between 3.30 eV and 3.43 eV.\u0000The real and imaginary parts of the complex refractive index were obtained in the order of\u000010!!cm!/W and 10!!cm/W. The results for nonlinear properties show that these samples are suitable for all-optical switching devices\u0000","PeriodicalId":514736,"journal":{"name":"Nanoscience & Nanotechnology-Asia","volume":"17 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139628720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}