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Ultra-broadband luminescent from a Bi doped CaO matrix

机译：Bi掺杂CaO矩阵的超宽带发光

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摘要

CaO:Bi phosphor powders were successfully synthesized by the sol-gel combustion method. Post heat treatment led to the enrichment of the Ca2+ site with multiple Bi centers. These centers were responsible for the change in the ultra-broadband cathodoluminescence (CL) emission as a function of different electron beam currents/beam voltages. The CaO phase formation and the presence of the enrichment of Bi was confirmed by using the X-ray diffraction and X-ray photoelectron spectroscopy techniques. The thermoluminescence afterglow spectra for the samples annealed at 800 degrees C and 1200 degrees C were strongly modified for the CaO and the presence of the multiple Bi centers. Of particular interest was that the ultra-broadband CL may have potential applications in inorganic single-emitting components that produce various colours under different beam currents/beam voltages or in a variety of optical devices if it can be better controlled.
机译：通过溶胶-凝胶燃烧法成功合成了CaO：Bi荧光粉。后热处理导致具有多个Bi中心的Ca2 +位点富集。这些中心负责作为不同电子束电流/电子束电压的函数的超宽带阴极发光（CL）发射的变化。通过使用X射线衍射和X射线光电子能谱技术确认了CaO相的形成和Bi的富集。对于CaO和多个Bi中心的存在，强烈修改了在800℃和1200℃退火的样品的热致发光余辉光谱。特别令人感兴趣的是，如果可以更好地控制，超宽带CL可能在无机单发射组件中具有潜在的应用，该组件在不同的束流电流/束电压下会产生各种颜色，或者在各种光学设备中。

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