Selective preparation of Ag species on photoluminescence of Sm3+ in borosilicate glass via Ag+-Na+ ion exchange |
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| Authors: | Jingyuan Zhao Jialun Zhu Zhengwen Yang Qing Jiao Chengye Yu Jianbei Qiu Zhiguo Song |
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| Affiliation: | 1. College of Materials Science and Engineering, Kunming University of Science and Technology, Kunming, China;2. Department of Nuclear Medicine, Tumor Hospital of Yunnan Province, Kunming Medical University, Kunming, China;3. Key Laboratory of Photoelectric Detection Materials and Devices of Zhejiang Province, Ningbo University, Ningbo, China |
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| Abstract: | Photoluminescence (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+. |
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| Keywords: | Ag nano-clusters Ag+ ion exchange photoluminescence |
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