Crystal-field Stark effect on the upconversion light emission spectrum of α-NaYF4 nanoparticles doped with Dy3+, Er3+, or Yb3+

1. García-Flores, A.F.
2. Martínez, E.D.
3. Munevar, J.
4. Garcia, D.J.
5. Cornaglia, P.S.
6. Fabris, F.
7. Urbano, R.R.
8. Rettori, C.