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

ABSTRACT: 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 li

SUBMITTER: Wang CC 

PROVIDER: S-EPMC10272155 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature