Abstract
AbstractPhotoluminescence (PL) of rare earth ion‐doped glasses could be enhanced by diverse Ag species such as Ag+ ions, Ag+‐Ag+ pairs, Ag nano‐clusters (NCs), and Ag nanoparticles (NPs). Selective preparation of silver species in rare earth ion‐doped glasses is a crucial step to obtain the luminescence enhancement of rare earth ions caused by the different silver species. In this work, Ag+ ions and Ag NCs were selectively prepared in the Sm3+‐doped borosilicate glass via the Ag+‐Na+ ion exchange. The influence of AgNO3/NaNO3 ratio in the molten salt on the Ag existing states was investigated. The results demonstrate that the isolated Ag+ ions exist in the Sm3+‐doped borosilicate glass when the ratio of AgNO3/NaNO3 is 1/1000. The Ag NCs are formed in the Sm3+‐doped borosilicate glass when the AgNO3/NaNO3 ratio is 1/10. The influence of Ag+ ions or Ag NCs on the PL of Sm3+ was systematically investigated. The results show that the PL of Sm3+ was enhanced by the energy transfer from Ag+ ions or Ag NCs to Sm3+.
Published Version
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