Article Title

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

Authors

Yuan Niu, § These authors contributed equally to this work.
Chaodan Pu, § These authors contributed equally to this work.
Runchen Lai, § These authors contributed equally to this work.
Renyang Meng, § These authors contributed equally to this work.
Wanzhen Lin, § These authors contributed equally to this work.
Haiyan Qin, § These authors contributed equally to this work.
Xiaogang Peng, § These authors contributed equally to this work.

Keywords

zinc-blende, core/shell, quantum dots, thick shells

Abstract

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.

Graphical Abstract

DOI

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

Publisher

Tsinghua University Press

Recommended Citation

Yuan Niu,Chaodan Pu,Runchen Lai,Renyang Meng,Wanzhen Lin,Haiyan Qin,Xiaogang Peng, One-pot/three-step synthesis of zinc-blende CdSe/CdS core/shell nanocrystals with thick shells. NanoRes.2017, 10(4): 1149–1162