Photoluminescence of Ag~+ and Ag_m~(n+) in co-doped Pr~(3+)/Yb~(3+) fluorophosphate glasses: tuning visible emission and energy transfer to Pr~(3+)/Yb~(3+) ions through excitation in different silver species

Castro Tarcio; Jubera Veronique; Fares Hssen; Petit Yannick; Fargues Alexandre; Cardinal Thierry; Nalin Marcelo; Ribeiro Sidney

首页> 外文期刊>Journal of materials science >Photoluminescence of Ag~+ and Ag_m~(n+) in co-doped Pr~(3+)/Yb~(3+) fluorophosphate glasses: tuning visible emission and energy transfer to Pr~(3+)/Yb~(3+) ions through excitation in different silver species

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Photoluminescence of Ag~+ and Ag_m~(n+) in co-doped Pr~(3+)/Yb~(3+) fluorophosphate glasses: tuning visible emission and energy transfer to Pr~(3+)/Yb~(3+) ions through excitation in different silver species

机译：共掺杂的Pr〜（3 +）/ Yb〜（3+）氟磷酸盐玻璃中Ag〜+和Ag_m〜（n +）的光致发光：调节可见光的发射和向Pr〜（3 +）/ Yb〜（3+）的能量转移

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Here, we report the luminescence properties of Yb3+/Pr3+ dual-doped fluorophosphate glasses containing silver clusters. Through the solubility of silver into the glass system as function of its initial concentration, charged species characterized as Ag+ and Agmn+ were formed and identified according to their absorption and emission spectral responses. By changing the transition metal concentration, multi-energy transfer mechanisms were observed between silver and Yb3+/Pr3+ co-doped glasses. The stabilization of silver species seems to be detrimental to the radiative processes of the rare earth ions under excitation at 444 nm ((Pr3+H4)-H-3 -> P-3(0) absorption line). In other words, the main visible emissions of Pr3+ and the NIR emission of Yb3+ decrease with increment of Ag concentration. However, energy transfer occurs for large spectral range by the excitation of the silver species. In consequence, the visible and NIR emission could be activate in a broadband from ultraviolet to the blue part of the spectral region. These two observations highlight the competitive absorption processes and probabilities between the cationic elements and the interest to use the transition metal species as sensitizers to excite the rare earth elements.

机译：在这里，我们报告含银团簇的Yb3 + / Pr3 +双掺杂氟磷酸盐玻璃的发光特性。通过银在玻璃系统中的溶解度（作为其初始浓度的函数），可以形成和表征带电物质，即Ag +和Agmn +，并根据它们的吸收和发射光谱响应进行识别。通过改变过渡金属的浓度，可以观察到银与Yb3 + / Pr3 +共掺杂玻璃之间的多能量转移机制。银物种的稳定似乎对在444 nm激发下（（Pr3 + H4）-H-3-> P-3（0）吸收线）的稀土离子的辐射过程有害。换句话说，Pr3 +的主要可见光发射和Yb3 +的NIR发射随着Ag浓度的增加而降低。然而，由于银物质的激发，在大光谱范围内发生了能量转移。结果，可见光和近红外发射可以在从紫外到光谱区域的蓝色部分的宽带中被激活。这两个发现突出了阳离子元素之间的竞争性吸收过程和概率，以及使用过渡金属物种作为敏化剂来激发稀土元素的兴趣。

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来源
《Journal of materials science》 |2019年第18期|16878-16885|共8页
作者
Castro Tarcio; Jubera Veronique; Fares Hssen; Petit Yannick; Fargues Alexandre; Cardinal Thierry; Nalin Marcelo; Ribeiro Sidney;
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Sao Paulo State Univ UNESP Inst Chem CP 355 BR-14800060 Araraquara SP Brazil|Univ Bordeaux CNRS ICMCB UPR 9048 87 Ave Dr A Schweitzer F-33608 Pessac France;

Univ Bordeaux CNRS ICMCB UPR 9048 87 Ave Dr A Schweitzer F-33608 Pessac France;

Univ Bordeaux CNRS ICMCB UPR 9048 87 Ave Dr A Schweitzer F-33608 Pessac France|Univ Bordeaux CNRS CEA CELIA UMR 5107 351 Cours Liberat F-33405 Talene France;

Sao Paulo State Univ UNESP Inst Chem CP 355 BR-14800060 Araraquara SP Brazil;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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Photoluminescence of Ag~+ and Ag_m~(n+) in co-doped Pr~(3+)/Yb~(3+) fluorophosphate glasses: tuning visible emission and energy transfer to Pr~(3+)/Yb~(3+) ions through excitation in different silver species

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