Upconversion emission of ZrO2 nanoparticles doped with erbium (Er3+) and ytterbium (Yb3+), synthesized by hydrothermal route

1. Torres Jasso, G.
2. Montes, E.
3. Guzmán Olguín, J.C.
4. Sánchez Guzmán, D.
5. López Esquivel, R.I.
6. Martín, I.R.
7. Guzmán Mendoza, J.