Research Article

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2017, 10(4): 1149–1162

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

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

Yuan Niu§, Chaodan Pu§, Runchen Lai, Renyang Meng, Wanzhen Lin, Haiyan Qin, and Xiaogang Peng (*)

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Center for Chemistry of Novel and High-Performance Materials, and Department of Chemistry, Zhejiang University, Hangzhou 310027, China
§ These authors contributed equally to this work.

Keywords: zinc-blende, core/shell, quantum dots, 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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One-pot/three-step synthesis of zinc-blende CdSe/CdS core/shell nanocrystals with thick shells. Nano Res. 2017, 10(4): 1149–1162 https://doi.org/10.1007/s12274-016-1287-3

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