Upconversion emission of ZrO2 nanoparticles doped with erbium (Er3+) and ytterbium (Yb3+), synthesized by hydrothermal route
G. Torres Jasso, Eduardo Montes, J. Olguin, Daniel Sánchez Guzmán, R.I. López-Esquivel, Inocencio Rafael Martin, José Guzmán Mendoza
Abstract