Upconversion Luminescence of Er^3+ and Co-Doped Er^3+/Yb^3+ Novel Transparent Oxyfluoride Glasses and Glass Ceramics: Spectral and Structural Properties
Upconversion Luminescence of Er^3+ and Co-Doped Er^3+/Yb^3+ Novel Transparent Oxyfluoride Glasses and Glass Ceramics: Spectral and Structural Properties