Competitive absorption of Eu³⁺ and Tb³⁺codoped in NaGd(PO₃)₄ phosphors

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• 作者：Jinlan Gu ; Jiuping Zhong ; Hongbin Liang ; Jianhui Zhang ; Qiang Su
• 刊名：Chemical Physics Letters
• 出版年：30 January, 2014
• 年：2014
• 卷：592
• 期：Complete
• 页码：261-264
• 全文大小：1325 K

文摘

Energy transfer has been generally utilized for the sensitization of luminescence in phosphors. It is common that excitation of donor can be transferred efficiently to acceptor. However, energy transfer should be investigated in association with the transfer efficiency from donors to activators. To accomplish this, energy transfer from Gd³⁺ to Eu³⁺ and Tb³⁺ was investigated. It was found that the transfer efficiency from Gd³⁺ to Eu³⁺ is higher than that from Gd³⁺ to Tb³⁺ because there are less energy mismatches between the emission of Gd³⁺ and the absorption of Eu³⁺ than that between Gd³⁺ and Tb³⁺ in the host NaGd(PO₃)₄.