Synthesis and luminescence characterization of a new yellowish-orange phosphor: Bab>2b>Bb>10b>Ob>17b>:Sm³⁺

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• 作者：Jiangong Li ; Huifang Yan and Fengmei Yan
• 刊名：Luminescence
• 出版年：2017
• 出版时间：February 2017
• 年：2017
• 卷：32
• 期：1
• 页码：30-34
• 全文大小：605K
• ISSN：1522-7243

文摘

A new yellowish-orange emitting phosphor, Bab>2b>Bb>10b>Ob>17b>:Sm³⁺ for use as a white light-emitting diode (W-LED) was synthesized by a solid-state reaction method. The X-ray diffraction results indicated that a pure Bab>2b>Bb>10b>Ob>17b> material was obtained. As a potential yellowish-orange luminescent material for W-LEDs, the Bab>2b>Bb>10b>Ob>17b>:Sm³⁺ phosphor could be excited effectively by near-ultraviolet (n-UV) light and exhibited yellowish-orange emission centered at 560 nm corresponding to the ⁴Gb>5/2b> → ⁶Hb>5/2b> transition of Sm³⁺ ions. The optimum concentration of Sm³⁺ ions in Bab>2b>Bb>10b>Ob>17b>, critical transfer distance (Ra) and concentration quenching mechanism of the presented phosphor were investigated. Moreover, CIE chromaticity coordinates and color purity performance of the Bab>2b>Bb>10b>Ob>17b>:Sm³⁺ phosphor were also discussed. The present work suggests that the Bab>2b>Bb>10b>Ob>17b>:Sm³⁺ phosphor has potential as a type of yellowish-orange emitting phosphor. Copyright