Structural Design for Controlling the Lattice Strain Relaxation Process in TiO₂/SiO₂ Core–Shell Nanoparticles

Substantial lattice strain arising from lattice misfit of the components of core–shell nanomaterials used to accommodate lanthanide emitters usually significantly results in an inhomogeneous shell, which substantially degrades the luminescence performance. We systematically studied the epitaxial habit, crystallization process, and interfacial energy transfer behavior of Tb3+- and Eu3+-doped TiO2/SiO2 multilayer core–shell and hollow multishell...