Despite the observation by a number of groups of a strong luminescence sensitization effect of erbium ions by excitation exchange from silicon nanoclusters, there is considerable experimental evidence that the fraction of Er ions excited by Si-nc is actually very low for much of the material reported. In this work, we examine the evidence and point out that Er excited state absorption is the likely cause. © 2006 American Institute of Physics.
|Titolo:||Er3+ excited state absorption and the low fraction of nanocluster-excitable Er3+ in SiOx|
|Data di pubblicazione:||2006|
|Appare nelle tipologie:||1.1 Articolo su Rivista/Article|