Recent advances in the development of upconversion core–shell nanoparticles

What is it about?

In this tutorial review, we highlight recent advances in the development of upconversion core–shell nanoparticles, with particular emphasis on the emerging strategies for regulating the interplay of dopant interactions through core–shell nanostructural engineering that leads to unprecedented upconversion properties. The improved control over photon energy conversion will open up new opportunities for biological and energy applications.

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Why is it important?

The ability to create UC emission by doping lanthanide ions into bulk materials has been long recognized. The extent to which the scope of UC can be expanded, however, has been appreciated only in recent years when nanofabrication became increasingly routine. In comparison with conventional bulk counterparts, UC core–shell nanoparticles can be constructed using a rather wide range of optical components, leading to highly designable and tunable UC properties.

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