Abstract
? 2022 Elsevier B.V.Er3+ and Sm3+ ions were co-doped in Sr2SnO4:xEr3+/Sm3+ ceramics to achieve the integration of photo-stimulated luminescence (PSL), thermal-stimulated luminescence (TSL) and photochromism (PC) in one single material. The effect of doped Er3+ content on the microstructure, PC, PSL and TSL of the ceramcis has been investigated. It is found that moderate Er3+ content (x ≤ 0.003) could enhance PC, photoluminescence and TSL performance of the ceramics. The PSL and TSL are greatly depressed when x ≥ 0.005. This variation is caused by the change of kinds of formed defects. In addition, we have proposed a new method for optical information storage using the PSL as the optical signal, in which up-conversion luminescence from Er3+ is the reference signal. This strategy could prevent the occurring of error signal. A simple mechanism on the luminescence modulation, PC, PSL and TSL is proposed basing on the defect chemistry. The application demonstration shows the ceramics’ potential in optical devices due to their multi-functional optical properties.
NSTL
Elsevier