Co-precipitation synthesis and photoluminescence properties of Ba_1?xMoO₄:xEu³⁺ red phosphors

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• 作者：Wen-Lin Feng^a ; ^b ; ^e ; ^{wenlinfeng@126.com} ; Ye Jin^a ; Ying Wu^c ; Deng-Feng Li^d ; An-Kang Cai^a
• 关键词：Co-precipitation ; Red phosphor ; Photoluminescence ; Ba1&minus ; xMoO4 ; xEu3+
• 刊名：Journal of Luminescence
• 出版年：2013
• 出版时间：February, 2013
• 年：2013
• 卷：134
• 期：Complete
• 页码：614-617
• 全文大小：542 K

文摘

Ba_1?xMoO₄:xEu³⁺ red phosphors were synthesized by the co-precipitation method with NH₄HCO₃-NH₃¡¤H₂O system as the precipitating agent. X-ray diffraction (XRD), scanning electron microscope (SEM) and photoluminescence spectra were used to characterize the structures and luminescent properties of the phosphors. The results showed that introduction of Eu did not change the crystal structure and morphology of BaMoO₄:Eu³⁺ phosphors. In addition, the influence of different contents of dopant Eu³⁺ for the luminescent properties of red phosphors Ba_1?xMoO₄:xEu³⁺ was analyzed. Photoluminescence spectra showed a red emission around 612 nm with 395 and 465 nm excitations, which matches the output wavelength of ultraviolet and blue LED chips. The optimal doping concentration of the red phosphors Ba_1?xMoO₄:xEu³⁺ was 30 mol % .