White light generation controlled by changing the concentration of silver nanoparticles hosted by Ho3+/Tm3+/Yb3+ doped GeO2-PbO glasses

Journal of Alloys and Compounds v. 644, p. 155-158, 2015 2.999 10.1016/j.jallcom.2015.04.108 Camilo, M. E.; Silva, E. O.; Kassab, L. R. P.; Garcia, J. A. M.; Araujo, C. B. de 2015