A novel Lib class="a-plus-plus">2b>Alb class="a-plus-plus">2b>Bb class="a-plus-plus">2b>Ob class="a-plus-plus">7b>:Dy³⁺ white light emitting phosphor synthesized by stearic sol–gel method

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• 作者：Y. P. Manwar ; R. S. Palaspagar…
• 刊名：Journal of Materials Science: Materials in Electronics
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：28
• 期：1
• 页码：994-998
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Optical and Electronic Materials; Characterization and Evaluation of Materials;
• 出版者：Springer US
• ISSN：1573-482X
• 卷排序：28

文摘

Lib>2(1−x)b>Alb>2b>Bb>2b>Ob>7b>:b>xb>Dy3+ (x = 0.01, 0.03, 0.05, 0.07 and 0.09 mol) phosphors were prepared by steric sol–gel method. The crystalline nature of the synthesized material was confirmed by using powder X-ray diffraction. The surface morphology and elemental composition analysis has been carried out for Dy3+ doped Lib>2b>Alb>2b>Bb>2b>Ob>7b> phosphor by using transmission electron microscopy, field emission scanning electron microscopy, and energy dispersive X-ray spectroscopy techniques. PL measurements indicated that the phosphor exhibited two strong emission transitions such as 4Fb>9/2b> → ^{6Hb>15/2b> (blue) and 4Fb>9/2b> → 6Hb>13/2b> (yellow) observed in visible region. The concentration quenching is observed at 5 mol% of Dy3+ ions doped Lib>2b>Alb>2b>Bb>2b>Ob>7b> phosphor. The CIE chromaticity coordinates were evaluated for two sharp emissions observed in blue (4Fb>9/2b> → 6Hb>15/2b>) and yellow (4Fb>9/2b> → 6Hb>13/2b>) regions to understand the suitability of these materials for white light generation.}