Fig. 1From: Near Infrared-Emitting Cr3+/Eu3+ Co-doped Zinc Gallogermanate Persistence Luminescent Nanoparticles for Cell ImagingXRD patterns of the as-prepared ZGGO:Cr3+ and ZGGO:Cr3+,Eu3+ and the crystal structure of spinel ZnGa2O4Back to article page