Mn 4+ , Eu 3+ Co-doped K 0.3 La 1.233 MgWO 6 : A Potentially Multifunctional Luminescent Material

作者：Zheng Long, Siguo Xiao, Xiaoliang Yang · 发表于：ACS Applied Electronic Materials · 年份：2020 · DOI：10.1021/acsaelm.0c00730 · 被引用次数：29 · 研究领域：Luminescence Properties of Advanced Materials、Perovskite Materials and Applications、Microwave Dielectric Ceramics Synthesis

Mn 4+, Eu 3+ co-doped magnesium lanthanum potassium tungstate (KLaMgWO 6 ) phosphors have been prepared by a high-temperature solid-state reaction method. Partial substitution of K + sites with La 3+ and Li + in the A site of KLaMgWO 6: Mn 4+ results in 9.7 times and 7.4 times increase in the intensity of Mn 4+ emission at 697 nm under blue light excitation, respectively. Strong emission of Eu 3+ (613 nm) is observed in the Mn 4+, Eu 3+ co-doped K 0.3 La 1.233 MgWO 6 without weakening the emission of Mn 4+, and the total emission intensity of the Mn 4+, Eu 3+ co-doped sample is enhanced by about 40% as compared with that of K 0.3 La 1.233 MgWO 6:0.006Mn 4+ . More importantly, the fluorescence intensity ratio ( I Mn / I Eu ) in the Mn 4+, Eu 3+ co-doped K 0.3 La 1.233 MgWO 6 phosphor increases monotonously not only with temperature but also with excitation wavelength within a certain range. The unique characteristics of the Mn 4+, Eu 3+ co-doped K 0.3 La 1.233 MgWO 6 phosphor might provide a lot of possible application including plant growth lighting, optical temperature sensing, and wavelength detection.