化工新型材料

化工新型材料 ›› 2020, Vol. 48 ›› Issue (12) : 116-119. DOI: 10.19817/j.cnki.issn 1006-3536.2020.12.028

科学研究

Mn⁴⁺激活的钛酸镁红色荧光粉的制备及其性能研究

蒲勇, 张微微

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Study on Mn⁴⁺ activated aMgO-Ti_1-xO₂∶xMn⁴⁺ red phosphor and its property

Pu Yong, Zhang Weiwei

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Received		Published
2020-05-30		2020-12-20
Issue Date	Revised Date
2021-01-21	2020-05-30

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摘要

采用球磨高温固相法制备了四价锰离子Mn⁴⁺掺杂非稀土激活的aMgO-Ti_1-xO₂∶xMn⁴⁺(a=1、2,x=0～0.3%)系列红色荧光粉。对合成的目标样品的晶体物相结构、颗粒微观形貌和发光性能进行了表征分析。结果表明:Mg₂Ti_1-xO₄∶xMn⁴⁺(x=0.1%)具有正钛酸镁面心立方尖晶石型结构,Mn⁴⁺能够很好地掺杂进基质晶格中取代Ti⁴⁺的位置;样品颗粒表面光滑,粒径集中在1～2μm;Mg₂Ti_1-xO₄∶xMn⁴⁺(x=0.1%)样品的发光性能远远优于MgTi_1-xO₃∶xMn⁴⁺(x=0.1%),其激发光谱主要由位于300～400nm和450～550nm的两个激发带构成,两激发带的峰值分别位于330nm和480nm处,表明样品能够被近紫外光和蓝光有效激发;其发射主峰位于660nm,最佳掺杂量x=0.1%。

Abstract

A series of Mn⁴⁺ doped non-rare earth activated aMgO-Ti_1-xO₂∶xMn⁴⁺ (a=1,2;x=0～0.3%) red phosphors were synthesized via ball grinding high temperature solid phase method.The crystal phase structure,particle morphology and luminescent properties of the samples were characterized and analyzed.The results shown that Mg₂Ti_1-xO₄∶xMn⁴⁺(x=0.1%) sample hold face centered cubic magnesium titanate spinel structure.Mn⁴⁺ can be well doped into the matrix lattice to replace Ti⁴⁺.The surface of the sample particles was smooth,and the particle size was concentrated at 1～2μm.The luminescence performance of sample Mg₂Ti_1-xO₄∶xMn⁴⁺(x=0.1%) was much better than that of sample MgTi_1-xO₃∶xMn⁴⁺(x=0.1%).The excitation spectrum of Mg₂Ti_1-xO₄∶xMn⁴⁺(x=0.1%) consisted of two excitation bands located at 300～400nm and 450～550nm,and their peaks of excitation zone were located at 330nm and 480nm respectively.It shown that the sample can be excited effectively by the near-ultraviolet light and blue light.Its main emission peak was located at 660nm,and the optimal doping amount was x=0.1%.

关键词

非稀土 / Mn⁴⁺ / Mg₂TiO₄:Mn⁴⁺ / 红色荧光粉

Key words

non-rare earth / Mn⁴⁺ / Mg₂TiO₄:Mn⁴⁺ / red phosphor

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Mn⁴⁺激活的钛酸镁红色荧光粉的制备及其性能研究[J]. 化工新型材料, 2020, 48(12): 116-119 DOI:10.19817/j.cnki.issn 1006-3536.2020.12.028

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