Photoluminescence Enhancement of CdS Nanocrystals Fabricated on Dithiocarbamate Functionalized PET Substrates

Abstract:

Cadmium sulfide (CdS) nanocrystals (NCs) were self-assembled and in-situ immobilized on the dithiocarbamate (DTCs)-functionalized polyethylene glycol terephthalate (PET) substrates between the organic (carbon disulfide diffused in n-hexane) –aqueous (ethylenediamine and Cd2+ dissolved in water) interface at room temperature. Powder X-ray diffraction measurement revealed the hexagonal structure of CdS nanocrystals. Morphological studies performed by scanning electron microscopy (SEM) and high-resolution transmission electron microscope (HRTEM) showed the island-like structure of CdS nanocrystals on PET substrates, as well as energy-dispersive X-ray spectroscopy (EDS) confirmed the stoichiometries of CdS nanocrystals. The optical properties of DTCs modified CdS nanocrystals were thoroughly investigated by ultraviolet-visible absorption spectroscopy (UV-vis) and fluorescence spectroscopy. The as-prepared DTCs present intrinsic hydrophobicity and strong affinity for CdS nanocrystals.

• Periodical: Key Engineering Materials (Volumes 512-515)
• Pages: 1511-1515
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.512-515.1511
• Online since: June 2012
• Authors: Chun Lin Zhao, Li Xing, Xiao Hong Liang, Jun Hui Xiang, Fu Shi Zhang, Li Jie Cui, Bo Song, Shi Wei Chen, Hua Zheng Sai, Zhen You Li
• Keywords: Biphase Interface, CdS Nanocrystals (NCs), Dithiocarbamate Ligand, PET Substrates

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