Enhancement of up conversion luminescence properties in Yb

Optically transparent Er3+/Tm3+/Yb3+ tri-doped oxyfluoride tellurite based nano-crystallized glass ceramics with the batching composition of 73TeO2-15ZnO-7ZnF2-3YF3-1.5YbF3-0.3ErF3-0.2TmF3 (mol%) is pr