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NIR-excitable heterostructured upconversion perovskite nanodots with improved stability

Author

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  • Longfei Ruan

    (National University of Singapore)

  • Yong Zhang

    (National University of Singapore
    National University of Singapore)

Abstract

There is a great need to develop heterostructured nanocrystals which combine two or more different materials into single nanoparticles with combined advantages. Lead halide perovskite quantum dots (QDs) have attracted much attention due to their excellent optical properties but their biological applications have not been much explored due to their poor stability and short penetration depth of the UV excitation light in tissues. Combining perovskite QDs with upconversion nanoparticles (UCNP) to form hybrid nanocrystals that are stable, NIR excitable and emission tunable is important, however, this is challenging because hexagonal phase UCNP can not be epitaxially grown on cubic phase perovskite QDs directly or vice versa. In this work, one-pot synthesis of perovskite-UCNP hybrid nanocrystals consisting of cubic phase perovskite QDs and hexagonal phase UCNP is reported, to form a watermelon-like heterostructure using cubic phase UCNP as an intermediate transition phase. The nanocrystals are NIR-excitable with much improved stability.

Suggested Citation

  • Longfei Ruan & Yong Zhang, 2021. "NIR-excitable heterostructured upconversion perovskite nanodots with improved stability," Nature Communications, Nature, vol. 12(1), pages 1-10, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-020-20551-z
    DOI: 10.1038/s41467-020-20551-z
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    Cited by:

    1. Zhongzheng Yu & Wen Kiat Chan & Donglei Zhou & Xinjuan Li & Yang Lu & Zhao Jiang & Bofeng Xue & Huangtianzhi Zhu & Simon Dowland & Junzhi Ye & Alasdair Tew & Lars van Turnhout & Qichun Gu & Linjie Dai, 2025. "Overcoming lattice mismatch for core-shell NaGdF4@CsPbBr3 heterostructures," Nature Communications, Nature, vol. 16(1), pages 1-10, December.

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