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Issue 10, 2015
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Inkjet printing of upconversion nanoparticles for anti-counterfeit applications

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Abstract

Patterning of upconversion luminescent materials has been widely used for anti-counterfeit and security applications, where the preferred method should be easy, fast, multicolor, high-throughput and designable. However, conventional patterning methods are complex and inflexible. Here, we report a digital and flexible inkjet printing based approach for producing high-resolution and high-luminescence anti-counterfeit patterns. We successfully printed different multicolor luminescent patterns by inkjet printing of upconversion nanoparticles with controlled and uniform luminescence intensity through optimizing the inks and substrates. Combined with another downconversion luminescent material, we achieved two different patterns in the same area, which show up separately under excitation by different wavelength laser sources. The developed technology is promising to use one single substrate for carrying abundant information by printing multilayer patterns composed of luminescent materials with different excitation light sources.

Graphical abstract: Inkjet printing of upconversion nanoparticles for anti-counterfeit applications

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Publication details

The article was received on 24 Nov 2014, accepted on 03 Jan 2015 and first published on 05 Jan 2015


Article type: Paper
DOI: 10.1039/C4NR06944G
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Nanoscale, 2015,7, 4423-4431

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    Inkjet printing of upconversion nanoparticles for anti-counterfeit applications

    M. You, J. Zhong, Y. Hong, Z. Duan, M. Lin and F. Xu, Nanoscale, 2015, 7, 4423
    DOI: 10.1039/C4NR06944G

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