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One-pot/three-step synthesis of zinc-blende CdSe/CdS core/shell nanocrystals with thick shells

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Abstract

A one-pot/three-step synthetic scheme was developed for phase-pure epitaxy of CdS shells on zinc-blende CdSe nanocrystals to yield shells with up to sixteen monolayers. The key parameters for the epitaxy were identified, including the core nanocrystal concentration, solvent type/composition, quality of the core nanocrystals, epitaxial growth temperature, type/concentration of ligands, and composition of the precursors. Most of these key parameters were not influential when the synthetic goal was thin-shell CdSe/CdS core/shell nanocrystals. The finalized synthetic scheme was reproducible at an almost quantitative level in terms of the crystal structure, shell thickness, and optical properties.

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Acknowledgements

The financial support from the National Natural Science Foundation of China (Nos. 21233005 and 91433204) is acknowledged.

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Authors and Affiliations

  1. Center for Chemistry of Novel and High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou, 310027, China

    Yuan Niu, Chaodan Pu, Runchen Lai, Renyang Meng, Wanzhen Lin, Haiyan Qin & Xiaogang Peng

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  1. Yuan Niu
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  2. Chaodan Pu
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  3. Runchen Lai
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  4. Renyang Meng
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  5. Wanzhen Lin
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  6. Haiyan Qin
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  7. Xiaogang Peng
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Correspondence to Xiaogang Peng.

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Niu, Y., Pu, C., Lai, R. et al. One-pot/three-step synthesis of zinc-blende CdSe/CdS core/shell nanocrystals with thick shells. Nano Res. 10, 1149–1162 (2017). https://doi.org/10.1007/s12274-016-1287-3

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  • DOI: https://doi.org/10.1007/s12274-016-1287-3

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