Preparation and luminescent properties of (Tb3+-Yb3+)SSA/(SBA-15) composite materials

Abstract In this study, the sulfosalicylic acid (SSA)-Tb and Yb compound were systematically assembled into the pores of SBA-15 by hydrothermal method. The luminescence properties of the prepared materials were studied through luminescence spectra. The influences of the content of Yb 3+ and Tb 3+ on luminescent properties have been studied, and the luminescence mechanisms were analyzed. By the emission spectrum intensity, the optimum proportion of Tb and Yb was confirmed. In prepared materials, the ordered mesoporous structures were retained, and the prepared materials showed the much stronger emission of Tb 3+ at 543 nm. The luminescence intensity attained the maximum when Yb 3+ molar content was 4%, and the Tb 3+ molar content was 2%. The prepared materials have potential applications value in luminescent materials field.