Open AccessAbsorption and photoluminescence properties of CdSe quantum dots prepared by hydrothermal method
Author(s) -
TaeGi Lee,
Kaito Noguchi,
Hisaaki Nishimura,
DaeGwi Kim
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1220/1/012028
Subject(s) - photoluminescence , quantum dot , quantum yield , hydrothermal circulation , materials science , shell (structure) , absorption (acoustics) , ligand (biochemistry) , hydrothermal synthesis , chemical engineering , nanotechnology , nanocrystal , chemistry , optoelectronics , fluorescence , physics , optics , composite material , biochemistry , receptor , engineering
Herein, we investigated the preparation and optical properties of water-soluble CdSe quantum dots (QDs). CdSe QDs with a narrow size distribution were hydrothermally prepared by reacting Cd 2+ with NaHSe in the presence of N -acetyl-L-cysteine as ligand. Furthermore, photoluminescence quantum yield increased to ∼47% when a ZnS shell was applied to prepare the CdSe/ZnS core/shell QDs.