Intrinsic luminescence centers in γ- and θ-alumina nanoparticles
Amirsalari Abdolvahab1, Shayesteh Saber Farjami1, †, Ghahrizjani Reza Taheri2, ‡
       

(color online) PL spectra of Al2O3 nanoparticles calcined at 750 °C in air with different excitation wavelengths.