E-resources
Peer reviewed
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Lin, Wanzhen; Niu, Yuan; Meng, Renyang; Huang, Lin; Cao, Hujia; Zhang, Zhenxing; Qin, Haiyan; Peng, Xiaogang
Nano research, 01/2016, Volume: 9, Issue: 1Journal Article
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.
