Luminescence from europium, europium–chromium, erbium, samarium and terbium‐activated powder, ceramic and polycrystalline cubic boron nitride
Luminescence from europium, europium–chromium, erbium, samarium and terbium‐activated powder, ceramic and polycrystalline cubic boron nitride
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铕、铕铬、铒、钐和铽激活粉末、陶瓷和多晶立方氮化硼的发光
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发表时间：
2007
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通讯作者：
J. Steeds
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作者：
E. Shishonok;S. Leonchik;J. Steeds
人们基于立方氮化硼生产了多种发光材料，并在室温和 7 K 下通过光致发光光谱进行了研究。这些材料呈微粉、陶瓷复合体和多晶聚集体的形式。在各种制剂中添加 Eu、Eu-Cr、Er、Sm 和 Tb，以 325 nm 或 488 nm 激发发光。首次在Eu、Cr共掺杂多晶cBN中发现Eu-Cr对发射，其主线位于686 nm。发出的光在某些情况下相当强烈，跨越了很宽的可见光谱范围。它通常是高度结构化的，并且可能与相关离子的 3+ 电荷态的众所周知的发射特性有关。这些材料具有作为需要在极端环境条件下工作的磷光体的潜在应用。 （© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA，魏因海姆）
A wide range of luminescent materials has been produced based on cubic boron nitride and studied by photoluminescence spectroscopy at room temperature and 7 K. These materials were in the form of micropowders, ceramic compacts and polycrystalline aggregates. The luminescence was excited by 325 nm or 488 nm excitation of Eu, Eu–Cr, Er, Sm and Tb additions to the various preparations. Eu–Cr pair emission has been discovered for the first time with its main line at 686 nm in Eu and Cr codoped polycrystalline cBN. The emitted light, which was quite intense in some cases, spanned a wide range of the visible spectrum. It was often highly structured and could be related to the well‐known emission characteristics of the 3+ charge states of the relevant ions. The materials have potential applications as phosphors that are required to operate in extreme environmental conditions. (© 2007 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)