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- Title
Shell-thickness dependent optical properties of CdSe/CdS core/shell nanocrystals coated with thiol ligands.
- Authors
Lin, Wanzhen; Niu, Yuan; Meng, Renyang; Huang, Lin; Cao, Hujia; Zhang, Zhenxing; Qin, Haiyan; Peng, Xiaogang
- Abstract
Using CdSe/CdS core/shell nanocrystals with 1-10 monolayers of CdS shell as the model system, we studied effects of thiol ligands on optical properties of the nanocrystals. The core/shell nanocrystals with original ligands possessed near unity photoluminescence (PL) quantum yield and single-exponential PL decay dynamics. The effects of thiol ligands on optical properties were found to depend on the shell thickness, environment (with/without oxygen), and excitation power (single- or multi-exciton). Systematic and quantitative results reported in this work should provide necessary information for fundamental understanding and technical applications of quantum dots (QDs) coated with thiol ligands. [Figure not available: see fulltext.]
- Publication
Nano Research, 2016, Vol 9, Issue 1, p260
- ISSN
1998-0124
- Publication type
Article
- DOI
10.1007/s12274-016-1014-0