Figure 1From: Color-tunable up-conversion emission in Y2O3:Yb3+, Er3+ nanoparticles prepared by polymer complex solution methodXRD pattern of Y 1.97 Yb 0.02 Er 0.01 O 3 UCNPs. Diffraction peaks are indexed according to PDF card #87-2368 (cubic bixbyite Y2O3 crystal structure).Back to article page