أرسل هذا في رسالة قصيرة: Structural and luminescence study of Dy<sup>3+</sup> doped phosphate glasses for solid state lighting applications

  _  _    __   __   _    _    __   __   _    _   
 | \| ||  \ \\/ // | |  | ||  \ \\/ // | || | || 
 |  ' ||   \ ` //  | |/\| ||   \ ` //  | || | || 
 | .  ||    | ||   |  /\  ||    | ||   | \\_/ || 
 |_|\_||    |_||   |_// \_||    |_||    \____//  
 `-` -`     `-`'   `-`   `-`    `-`'     `---`