化工新型材料

化工新型材料 ›› 2024, Vol. 52 ›› Issue (3) : 181-186. DOI: 10.19817/j.cnki.issn1006-3536.2024.03.034

科学研究

室温共沉淀法制备KNaSiF₆∶Mn⁴⁺红色荧光粉及发光性能研究

傅瑜, 卜佳瑜, 张雅珩

作者信息 +

Synthesis of KNaSiF₆∶Mn⁴⁺ red phosphors by room-temperature co-precipitation method and luminescence property study

Fu Yu, Bu Jiayu, Zhang Yaheng

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Received		Published
2022-12-08		2024-03-20
Issue Date	Revised Date
2024-03-28	2022-12-08

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摘要

采用简单的室温共沉淀法制备了发光强度较高的KNaSiF₆∶Mn⁴⁺红色荧光粉。通过X射线衍射仪、扫描电子显微镜和荧光光谱仪对荧光粉的结构、形貌、激发和发射光谱进行了表征。详细探究了合成过程中原料、HF用量以及Mn⁴⁺掺杂量对样品结构和发光性能的影响。结果表明:当NaF与KF配比为1∶1,HF用量为9mL,Mn⁴⁺掺杂浓度为7.5%时,样品为纯相且发光强度最大;在463nm激发下,最强窄带发射峰位于631nm处,且于620nm观察到较强的零声子线ZPL发射。

Abstract

KNaSiF₆∶Mn⁴⁺ red phosphors with high luminescence intensity were simply synthesized by room-temperature co-precipitation method.The structure,morphology,excitation and emission spectra of phosphors were characterized via X-ray diffraction (XRD),scanning electron microscopy (SEM) and fluorescence spectrometer.The influences of raw materials,HF dosage and Mn⁴⁺ doping concentration on the structure and luminescence properties of the samples during the synthesis process were investigated exhaustively.The results demonstrated that when the ratio of NaF to KF was 1∶1,the dosage of HF was 9mL,and the doping concentration of Mn⁴⁺ was 7.5%,the sample was pure phase and provided the highest luminesce intensity.Under 463nm excitation,the strongest narrow-band emission was located at 631nm,and the relatively strong ZPL emission was observed at 620nm.

关键词

KNaSiF₆∶Mn⁴⁺ / 共沉淀法 / 红色荧光粉

Key words

KNaSiF₆∶Mn⁴⁺ / co-precipitation method / red phosphor

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室温共沉淀法制备KNaSiF₆∶Mn⁴⁺红色荧光粉及发光性能研究[J]. 化工新型材料, 2024, 52(3): 181-186 DOI:10.19817/j.cnki.issn1006-3536.2024.03.034

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