The evolution and role of Na₂CO₃ flux used to synthesize Er₂O₂S laser absorbent

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• 作者：Wen Sun ; Huan Xu ; Xu Qiu ; Mingxun Yu…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：27
• 期：10
• 页码：11049-11054
• 全文大小：1,130 KB
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Chemistry
  Optical and Electronic Materials
  Characterization and Evaluation Materials
  
• 出版者：Springer New York
• ISSN：1573-482X
• 卷排序：27

文摘

A novel 1.54 μm laser absorbent of Er₂O₂S was prepared by solid state flux method. The effects of different calcining temperatures and preservation time on the synthesis and reflecting property of Er₂O₂S were investigated. The mechanism of fluxing agent was assumed and proved. The phase composition, morphology, and reflectivity of the powders were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and ultraviolet visible spectrophotometer (UV-3600PC). The results showed that pure phase of Er₂O₂S could be obtained with Na₂CO₃ as fluxing agent at 800–1200 °C, too high temperature and too long preservation time were bad for synthesizing Er₂O₂S. Na₂CO₃ played an important role during the reaction, the elemental sulfur in Er₂O₂S came from Na₂S₂O₃ indeed. Different calcination conditions had a great impact on particle morphology, which had influence on the reflectivity of the products. The reflectivity was the lowest (0.39 %) when the calcining temperature was 1200 °C.