Joanna Pisarska, Nikola Bednarska-Adam, Marta Kuwik, Tomasz Goryczka, Bogusław Macalik, Wojciech A. Pisarski
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引用次数: 0
摘要
研究了锗酸盐陶瓷Li2ZnGeO4:Nd3+和Li2MgGeO4:Nd3+在近红外（IR）发光中的应用。相鉴定表明，这两种陶瓷化合物在单斜晶格中结晶，具有广泛的锗酸橄榄石家族的特征。分析了不同激发波长下Li2AGeO4:Nd3+ (A = Zn, Mg)的近红外发光光谱。在第二个生物窗口观测到的近红外发射波段分别对应于陶瓷主体以及Nd3+离子的4F3/2→4I11/2和4F3/2→4I13/2跃迁。基于发光光谱及其衰减，确定了未掺杂和掺Nd3+陶瓷样品的几个光谱参数。对含Nd3+的锗酸橄榄石的实验结果表明，陶瓷宿主对第二生物窗的近红外发光有重要贡献。
Germanate ceramics Li2ZnGeO4:Nd3+ and Li2MgGeO4:Nd3+ have been studied for near-infrared (IR) luminescence applications. The phase identification showed that both ceramic compounds crystallized in a monoclinic lattice, characteristic of a broad family of germanate olivines. Near-IR luminescence spectra have been analyzed for Li2AGeO4:Nd3+ (A = Zn, Mg) under different excitation wavelengths. Near-IR emission bands observed in the second biological window correspond to the ceramic host as well as 4F3/2 → 4I11/2 and 4F3/2 → 4I13/2 transitions of Nd3+ ions, respectively. Based on luminescence spectra and their decays, several spectroscopic parameters for un-doped and Nd3+-doped ceramic samples were determined. The experimental results for germanate olivines containing Nd3+ ions suggest that ceramic host gives important contribution to near-IR luminescence at second biological window.
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The Journal of the American Ceramic Society contains records of original research that provide insight into or describe the science of ceramic and glass materials and composites based on ceramics and glasses. These papers include reports on discovery, characterization, and analysis of new inorganic, non-metallic materials; synthesis methods; phase relationships; processing approaches; microstructure-property relationships; and functionalities. Of great interest are works that support understanding founded on fundamental principles using experimental, theoretical, or computational methods or combinations of those approaches. All the published papers must be of enduring value and relevant to the science of ceramics and glasses or composites based on those materials.
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