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Synthesis, Structure and Multicolor-tunable Luminescence of the Dandelion-like SiO2:Ln3+ (Ln = Eu, Tb) Nanophosphors

Abstract

A series of novel color tunable dandelion-like SiO2:Ln3+ (Ln = Eu, Tb) nanophosphors with approximately 70nm in diameter were prepared by a simple hydrothermal route. The phase, time-dependent shape evolution, morphology, sizes, and luminescence properties of the as-prepared products were well characterized by means of X-ray diffraction, scanning electron microscopy, energy-dispersive X-ray spectrometry, and photoluminescence spectra as well as kinetic decays curves. Under ultraviolet excitation, the Eu3+ and Tb3+ singly doped SiO2 samples showed strong red and green emission, respectively. Furthermore, the luminescence colors of the as-prepared Tb3+, Eu3+ co-doped dandelion-like SiO2 nanophosphors could be altered from green to red, including green-yellow, yellow, orange yellow and reddish orange, by simply adjusting the doping concentrations of Eu3+.

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Publication details

The article was received on 26 Mar 2017, accepted on 16 May 2017 and first published on 17 May 2017


Article type: Paper
DOI: 10.1039/C7NJ00999B
Citation: New J. Chem., 2017, Accepted Manuscript
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    Synthesis, Structure and Multicolor-tunable Luminescence of the Dandelion-like SiO2:Ln3+ (Ln = Eu, Tb) Nanophosphors

    X. Xie, J. Chen, Y. Sheng, Y. Song, X. Zhou, X. Zhang, Z. Shi, H. zou and K. Zheng, New J. Chem., 2017, Accepted Manuscript , DOI: 10.1039/C7NJ00999B

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