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- Title
Citric sol-gel synthesis and luminescence characteristics of CaSrLaEuZnO phosphors.
- Authors
Li, Bingyan; Liu, Yunfei; Lu, Yinong; Zhang, Xue; Song, Fei; Yang, Fengling
- Abstract
The emission-tunable CaLaEuZnO phosphors were synthesized by citric sol-gel method. The products were characterized by X-ray diffractometer, scanning electron microscope, energy dispersive spectroscopy and photoluminescence spectrometer. Through adjusting the dopant concentration of Eu in CaLaZnO phosphor, blue-green to orange-red emission with the 467 nm excitation could be obtained, which matches well with the emission of blue LED chip. Luminescence properties of CaSrLaEuZnO (0 ≤ y ≤ 1) indicated that increasing Sr content enhances not only the emission intensity of D → F transition but also the emission intensity ratio of D → F to D → F (asymmetry ratio). The CaSrLaEuZnO phosphors possess optimal integrated emission intensity, which is 20 % higher than that of CaLaEuZnO phosphors, and the Commission International de L'Eclairage chromaticity coordinate is (0.658, 0.341). CaSrLaEuZnO phosphors may have potential applications in field emission displays based on their particle size, low-cost synthetic route, and diverse luminescent properties.
- Subjects
LUMINESCENT probes; SEMICONDUCTOR thin films; NANOSTRUCTURED materials; DISPERSION (Atmospheric chemistry); PHOSPHOR manufacturing; OPTICAL materials; PHOTON emission; X-ray diffractometers
- Publication
Journal of Materials Science: Materials in Electronics, 2015, Vol 26, Issue 8, p5618
- ISSN
0957-4522
- Publication type
Article
- DOI
10.1007/s10854-015-3111-3