Processing and characterization of monodisperse phosphine-free CdSe colloidal quantum dots

Hadi Maghsoudi; Melika Mahboub; Sirous Asgari

doi:10.1117/12.2064228

28 August 2014 Processing and characterization of monodisperse phosphine-free CdSe colloidal quantum dots

Hadi Maghsoudi, Melika Mahboub, Sirous Asgari

Proceedings Volume 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI; 91701J (2014) https://doi.org/10.1117/12.2064228
Event: SPIE NanoScience + Engineering, 2014, San Diego, California, United States

Abstract

In this research, mono-dispersed quantum dots of CdSe were produced using a phosphine-free approach to synthesis of colloidal quantum dots. Selenium precursor was selected as the main precursor. It was found that the initial concentration ratio of monomers critically controlled the size distribution of the nanoparticles through its influence on the growth kinetics of these particles. The best result was obtained using an initial Se/Cd ratio of 5 where CdSe quantum dots of a uniform size were synthesized. This was manifested in the absorption spectra of these particles by occurrence of sharp peaks at a wavelength of about 615 nm.

Citation Download Citation

Hadi Maghsoudi, Melika Mahboub, and Sirous Asgari "Processing and characterization of monodisperse phosphine-free CdSe colloidal quantum dots", Proc. SPIE 9170, Nanoengineering: Fabrication, Properties, Optics, and Devices XI, 91701J (28 August 2014); https://doi.org/10.1117/12.2064228

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