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Zinc oxide nanostructures enhanced photoluminescence by carbon-black nanoparticles in Moiré heterostructures.

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  • معلومة اضافية
    • المصدر:
      Publisher: Nature Publishing Group Country of Publication: England NLM ID: 101563288 Publication Model: Electronic Cited Medium: Internet ISSN: 2045-2322 (Electronic) Linking ISSN: 20452322 NLM ISO Abbreviation: Sci Rep Subsets: PubMed not MEDLINE; MEDLINE
    • بيانات النشر:
      Original Publication: London : Nature Publishing Group, copyright 2011-
    • الموضوع:
      Zinc Oxide*/chemistry ; Nanostructures*/chemistry ; Nanoparticles*/chemistry; Light ; Carbon
    • نبذة مختصرة :
      ZnO/carbon-black heterostructures were synthesized using a sol-gel method and crystallized by annealing at 500 °C under 2 × 10 -2  Torr for 10 min. The crystal structures and binding vibration modes were determined by XRD, HRTEM, and Raman spectrometry. Their surface morphologies were observed by FESEM. The Moiré pattern that is observed in the HRTEM images confirms that the carbon-black nanoparticles were covered by the ZnO crystals. Measurements of optical absorptance revealed that the optical band gap of the ZnO/carbon-black heterostructures increased from 2.33 to 2.98 eV as the carbon-black nanoparticle content increases from 0 to 8.33 × 10 -3  mol owing to the Burstein-Moss effect. The photoluminescence intensities at the near-band edge and of the violet, and blue light were increased by factors about 68.3, 62.8, and 56.8, respectively, when the carbon-black contents is of the 2.03 × 10 -3  mol. This work reveals that the proper carbon-black nanoparticle content involved increases the PL intensities of the ZnO crystals in the short wavelength regime, supporting their potential application in the light-emitting devices.
      (© 2023. The Author(s).)
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    • Grant Information:
      MOST 110-2221-E-034-006 National Science and Technology Council
    • الرقم المعرف:
      SOI2LOH54Z (Zinc Oxide)
      7440-44-0 (Carbon)
    • الموضوع:
      Date Created: 20230615 Date Completed: 20230619 Latest Revision: 20230619
    • الموضوع:
      20230620
    • الرقم المعرف:
      PMC10272155
    • الرقم المعرف:
      10.1038/s41598-023-36847-1
    • الرقم المعرف:
      37322054