{"title":"Synthesizing, characterizing, and cold plasma treating of Cr2O3/CuO nanomaterials doped PMMA/PEO for flexible optoelectronic applications","authors":"","doi":"10.1016/j.optmat.2024.116139","DOIUrl":null,"url":null,"abstract":"<div><div>Polymeric nanocomposites are attracting significant attention due to their ability to facilitate innovative uses. This work investigated the possibility of improving performance by examining the impact of dispersing copper oxide (CuO) and chromium (III) oxide (Cr<sub>2</sub>O<sub>3</sub>) nanoparticles in a blend of poly (methyl methacrylate) and polyethylene oxide (PEO) on several properties. UV–visible and photoluminescence spectroscopies were used for optical properties, and FE-SEM was used for surface morphology analysis. The results showed that as the CuO–Cr<sub>2</sub>O<sub>3</sub> percentage increased, the extinction coefficient increased, and indirect band gaps decreased. The photoluminescence properties showed two distinct peaks (dual emission). We measured the AC electrical properties with frequencies ranging from 100 Hz to 5 MHz. The composite's AC conductivity and dielectric loss increased significantly at high frequencies (higher than 2 MHz). The dielectric constant is nearly frequency-independent and increases as the concentration of nanoparticles increases. We used a DC plasma sputtering facility to treat the nanocomposites with argon plasma at a pressure of 0.12 mBar for 7 min. We analyzed the films' properties before and after plasma treatment, observing a significant impact on nanocomposite-incorporated nanoparticles. After plasma treatment, the band gap decreased from 5.05 eV to 4.8 eV for the lowest concentration of CuO + Cr<sub>2</sub>O<sub>3</sub> (1.5 wt%) and from 3.55 eV to 2.47 eV for the highest concentration of CuO + Cr<sub>2</sub>O<sub>3</sub> (6 wt%). The changes ranged from 0.25 to 1.08 eV. The films possess features that render them suitable for high-frequency optoelectronic devices as well as optical applications such as emission filters and UV shielding.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":null,"pages":null},"PeriodicalIF":3.8000,"publicationDate":"2024-09-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Optical Materials","FirstCategoryId":"88","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0925346724013223","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
Polymeric nanocomposites are attracting significant attention due to their ability to facilitate innovative uses. This work investigated the possibility of improving performance by examining the impact of dispersing copper oxide (CuO) and chromium (III) oxide (Cr2O3) nanoparticles in a blend of poly (methyl methacrylate) and polyethylene oxide (PEO) on several properties. UV–visible and photoluminescence spectroscopies were used for optical properties, and FE-SEM was used for surface morphology analysis. The results showed that as the CuO–Cr2O3 percentage increased, the extinction coefficient increased, and indirect band gaps decreased. The photoluminescence properties showed two distinct peaks (dual emission). We measured the AC electrical properties with frequencies ranging from 100 Hz to 5 MHz. The composite's AC conductivity and dielectric loss increased significantly at high frequencies (higher than 2 MHz). The dielectric constant is nearly frequency-independent and increases as the concentration of nanoparticles increases. We used a DC plasma sputtering facility to treat the nanocomposites with argon plasma at a pressure of 0.12 mBar for 7 min. We analyzed the films' properties before and after plasma treatment, observing a significant impact on nanocomposite-incorporated nanoparticles. After plasma treatment, the band gap decreased from 5.05 eV to 4.8 eV for the lowest concentration of CuO + Cr2O3 (1.5 wt%) and from 3.55 eV to 2.47 eV for the highest concentration of CuO + Cr2O3 (6 wt%). The changes ranged from 0.25 to 1.08 eV. The films possess features that render them suitable for high-frequency optoelectronic devices as well as optical applications such as emission filters and UV shielding.
期刊介绍:
Optical Materials has an open access mirror journal Optical Materials: X, sharing the same aims and scope, editorial team, submission system and rigorous peer review.
The purpose of Optical Materials is to provide a means of communication and technology transfer between researchers who are interested in materials for potential device applications. The journal publishes original papers and review articles on the design, synthesis, characterisation and applications of optical materials.
OPTICAL MATERIALS focuses on:
• Optical Properties of Material Systems;
• The Materials Aspects of Optical Phenomena;
• The Materials Aspects of Devices and Applications.
Authors can submit separate research elements describing their data to Data in Brief and methods to Methods X.