Switching green to red emission in tridoped ZrO"2:Yb^3^+-Er^3^+-Bi^3^+ nanocrystals
Spectroscopic properties of Eu^3^+Nd^3^+ co-doped phosphate glasses and opaque glass-ceramics
Spectroscopic properties of Eu3+/Nd3+ co-doped phosphate glasses and opaque glass–ceramics