Fig. 5
From: Perovskite quantum dots modulating upconversion nanomaterials for cancer early detections
Fluorescence properties of UCNP@SiO2 + QDs composite materials. A Fluorescence spectrogram of UCNP@SiO2 + QDs with different QDs (X = Cl, Br, I) doping ratios. (Sample: (1) UCNP@SiO2 + QDs (Cl Br = 0.9: 0.1); (2) UCNP@SiO2 + QDs (Cl Br = 0.7: 0.3); (3) UCNP@SiO2 + QDs(Cl Br = 0.5: 0.5); (4) UCNP@SiO2 + QDs(Cl Br = 0.3: 0.7); (5) UCNP@SiO2 + QDs (CsPbBr3); (6) UCNP@SiO2 + QDs (Br:I = 0.7: 0.3); (7) UCNP@SiO2 + QDs (Br:I = 0.5: 0.5); (8) UCNP@SiO2 + QDs (Br:I = 0.3: 0.7); (9) UCNP@SiO2 + QDs (Br:I = 0.1: 0.9), the excitation light wavelength is 980 nm). B CIE plots of UCNP@SiO2 + QDs for Sample 1 to Sample 9. C FTIR spectra of UCNPs, UCNP@SiO2 + QDs, UCNP@SiO2 + QDs and UCNP@SiO2 + QDs-NH2