A Convenient Noninjection One-pot Synthesis Of CdS Nanoparticles And Their Studies

M. Penchal Reddy1*, B.C. Jamalaiah2, I.G. Kim1, D.S. Yoo1, K.V. Siva Kumar3, R. Ramakrishna Reddy3

1Department of Physics, Changwon National University, Changwon, 641773, South Korea

2Ceramic and Glass Engineering Department, CICECO, University of Aveiro, Campus Santiago, 3810-193 Aveiro, Portugal

3Department of Physics, Sri Krishnadevaraya University, Anantapur, 515 055, India

Adv. Mater. Lett., 2013, Current Issue, 4 (8), pp 621-625

DOI: 10.5185/amlett.2012.12483

Publication Date (Web): Jul 13, 2013

E-mail: drlpenchal@gmail.com


Water-dispersible CdS quantum dots (QDs) were synthesized in a simple one-pot noninjection route. The X-ray diffraction (XRD) pattern of the nanoparticles shows the cubic structure with particle size of the order 5-7 nm which was in good agreement with the transmission electron microscopic (TEM) studies. Selected area electron diffraction (SAED) recognized the cubic structure of CdS. The energy dispersive X- ray spectroscopy (EDAX) analysis confirms the presence of Cd and S elements in the samples. The optical properties are characterized by Ultraviolet-Visible (UV-Vis) absorption and Photoluminescence (PL) spectra. The synthesis parameters of this simple and rapid approach, including the reaction temperature and time, the pH of the reaction solution and the molar ratio of the 3-mercaptopropionic acid (MPA) stabilizer to Cd2+, have considerable influence on the particle size and photoluminescence of the CdS quantum dots. The 3-mercaptopropionic acid (MPA) stabilized CdS QDs can be used in solar cells, light emitting diodes, biological imaging etc.


CdS nanoparticles, thiourea, mercaptopropionic acid, optical properties, luminescence.

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