Figure 8From: Highly Efficient Near-IR Photoluminescence of Er3+ Immobilized in Mesoporous SBA-15Fluorescence spectra of (1) Er-SBA-15 with Er3+ concentrations of 1.81 × 1020ions/cm3 (curve 1) and (2) Er(PMS)x-SBA-15 with Er3+ concentrations of 9.03 × 1019, 1.81 × 1020, and 2.71 × 1020ions/cm3, respectively (curves 2, 3 and 4)Back to article page