High upconversion quantum yield at low pump threshold in Er3+/Yb3+ doped La2O2S phosphor
Pokhrel, Madhab ; Gangadharan, Ajith kumar ; Sardar, Dhiraj K.
Materials letters, 2013-05, Vol.99, p.86-89
[Periódico revisado por pares]
Elsevier B.V
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