Strong photoluminescence and good electrical properties in Eu-modified SrBi 2 Nb 2 O 9 multifunctional ceramics

Ho‐doped SrBi2Nb2O9 multifunctional ceramics with bright green emission and good electrical properties

“…With Ho 3+ increasing, the intensity increases at first and then decreases remarkably, reaches the maximum at x = 0.004. This behavior can be owing to the concentration quenching effect . The concentration‐quenching is closely related to the bismuth layer perovskite structure and caused by the energy transfer from one to another activator ion until the energy is depleted.…”

“…When Ho 3+ dopants entered into the BLESs lattice, Ho 3+ preferentially entered into the (A m −1 B m O 3 m +1 ) 2− layers and occurred the energy transfer primarily, rather than the (Bi 2 O 2 ) 2+ layers. Thus, nonradiative energy transfer between nearby Ho 3+ ions exceeds the critical value, which always lead to the high quenching concentrations and thus results in the decrease of the luminescence intensity when dopants reach certain content .…”

“…To achieve enhanced electrical properties, Eu 3+ ‐modified SBN ceramics have been designed and fabricated previously . Results showed that Eu 3+ modification could not only enhance electrical properties of SBN ceramics effectively, but also enable the SBN ceramics to exhibit bright red light emission at room temperature (RT) . In the present work, we choose Ho 3+ ions as the dopant to modify the A‐sites Sr 2+ ions of SBN ceramics to further confirm the effect of rare earth ions.…”

“…Compare with other Aurivillius materials, pure SBN ceramic has several defects with a relatively low remanent polarization and piezoelectric coefficient . To achieve enhanced electrical properties, Eu 3+ ‐modified SBN ceramics have been designed and fabricated previously . Results showed that Eu 3+ modification could not only enhance electrical properties of SBN ceramics effectively, but also enable the SBN ceramics to exhibit bright red light emission at room temperature (RT) .…”

Structure and electrical properties of Eu-doped SrBi2Nb2O9 ceramics

“…Studies on Eu-doped SrBi 2 Nb 2 O 9 have been prioritized mainly for optical properties and restricting dielectrics were not a key focus. Thus, Eu 3+ presents some characteristic properties enabling it to be frequently used as a probe [8,9]. To our knowledge, electrical and dielectric properties of Eu-doped SrBi 2 Nb 2 O 9 ceramics have not been discerned.…”