Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 864, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2020.158103
Keywords
Cathodoluminescence; FEDs; SrLiAl3N4:Eu2+; Nitride phosphor
Categories
Funding
- Research and Development Plan for the Science and Technology Department of Gansu Province [18YF1NA104]
- Natural Science Foundation of China [U1905213]
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Efficient and stable phosphors are crucial for the development of field emission displays (FEDs). SrLiAl3N4:Eu2+ phosphor, synthesized using a simple preparation method at low temperature, exhibits narrow band red emission and excellent CL performance, making it a potential candidate for full color FEDs.
Exploring efficient and stable phosphors have already attract highly public attentions and always been considered as a crucial issue in the development of field emission displays (FEDs). In order to discover the potential application for FEDs, the red phosphor, SrLiAl3N4:Eu2+, was synthesized by a simple preparation method at low temperature and the photoluminescence(PL) as well as cathodoluminescence (CL) performances were studied in our work. The SrLiAl3N4:Eu2+ phosphor exhibits irregular spherical morphology with a soft agglomeration and the mean particle size is 4.52 mu m. When excited by a low-voltage electron beam, it shows a narrow band red emission in the 600-700 nm range with the 51 nm of full width at half maximum (FWHM) and the strongest emission peak is located at 647 nm, which is attributed to the 4r(6)5d -> 4f(7) electron transition of Eu2+. The effects of different Eu2+ doping concentration and probe current, accelerating voltage, as well as electron bombardment time on the CL performance of SrLiAl3N4:Eu2+ were studied in detail and found that the optimal sample, SrLiAl3N4:0.5%Eu2+, exhibits no saturation effect and excellent degradation property compared with the commercial Y2O3:Eu3+ phosphor. In view of the prominent CL performance of SrLiAl3N4:Eu2+, it can be considered as candidate phosphor in full color FEDs. (C) 2020 Elsevier B.V. All rights reserved.
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