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Lanthanide-Doped Core–Shell Upconversion Nanophosphors

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Book cover Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications

Abstract

A core–shell upconversion (UC) nanoparticle is typically composed of an upconversion core coated with one or more shell layers, which essentially preserve the properties of core-only nanoparticle. However, when compared with the core-only nanoparticle, core–shell structure provides more rooms for UC studies due to the increased flexibility in nanoparticle design. The core–shell structure can boost the UC efficiency by passivating the surface lattice defects and shielding the core nanoparticles from the surrounding environment. In addition, core–shell structures greatly expand the optical tunability and enable functional integration at single nanoparticle levels. In this chapter, we highlight recent advances in general synthetic strategies and possibility for composing core–shell upconversion nanoparticles. We also bring to the forefront several challenges for future study.

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Acknowledgments

F. Wang acknowledges the Research Grants Council of Hong Kong (CityU 109413) and National Natural Science Foundation of China (Nos. 21303149 and 51332008) for supporting this work.

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Authors and Affiliations

  1. Department of Physics and Materials Science, City University of Hong Kong, 83 Tat Chee Avenue, Hong Kong SAR, China

    Tianying Sun & Feng Wang

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  1. Tianying Sun
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  2. Feng Wang
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Correspondence to Feng Wang .

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Editors and Affiliations

  1. Department of Chemistry, National Taiwan University Department of Chemistry, Taipei, Taiwan

    Ru-Shi Liu

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Sun, T., Wang, F. (2016). Lanthanide-Doped Core–Shell Upconversion Nanophosphors. In: Liu, RS. (eds) Phosphors, Up Conversion Nano Particles, Quantum Dots and Their Applications. Springer, Singapore. https://doi.org/10.1007/978-981-10-1590-8_9

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