Jump to main content
Jump to site search

Multi-wavelength tailoring of ZnGa2O4 nanosheet phosphor via defect engineering


The multi-wavelength luminescence tailoring of individual phosphor free of external dopants is of great interest and technologically important for practical applications. Using ZnGa2O4 nanosheet as a target phosphor, we demonstrate how to artificially control the luminescence wavelength centers and their emission intensities to simultaneously emit ultraviolet/blue, green and red light via a feasible defect engineering strategy. A simple high-temperature annealing of hydrothermally synthesized ZnGa2O4 nanosheets leads to the effective tunability of their emission process to present a multi-wavelength luminescence due to the structural distortion and the formation of oxygen vacancies. Controlling the annealing temperature and time can further precisely modulate the wavelengths and their corresponding intensities. It is speculated that the migration of Ga into [GaO4] tetrahedron and O vacancy are responsible for the multi-wavelength luminescence of ZnGa2O4 nanosheet phosphor. Finally, the tentative multi-wavelength luminescence behavior of ZnGa2O4 nanosheet phosphor via defect engineering is discussed based on series of evidenced experimental observations of XRD, XPS, HRTEM and CL.

Back to tab navigation

Supplementary files

Publication details

The article was received on 23 Jun 2018, accepted on 05 Sep 2018 and first published on 05 Sep 2018

Article type: Paper
DOI: 10.1039/C8NR05072D
Citation: Nanoscale, 2018, Accepted Manuscript
  •   Request permissions

    Multi-wavelength tailoring of ZnGa2O4 nanosheet phosphor via defect engineering

    W. Yang, J. Li, B. Liu, X. Zhang, C. Zhang, P. Niu and X. Jiang, Nanoscale, 2018, Accepted Manuscript , DOI: 10.1039/C8NR05072D

Search articles by author