A Novel Thermochemical Method for Fabrication and Theoretical Explanation of High Luminescent Mn-Doped CdS Nanoparticles

CdS nanoparticles and thin films are well known for their excellent semiconducting properties. When transition metal ions are doped into the CdS, it exhibits magnetic properties in addition to semiconducting properties and they are termed as dilute magnetic semiconductors (DMSs). In this paper, we discuss the preparation of sodium bis(2-ethylhexyl) sulfonsuccinate (AOT) capped CdS nanoparticles and thin films doped with magnetic impurity Mn. Sodium bis(2-ethulexyl) sulfonsuccinate (AOT), capping agent promotes the uniform formation of nanoparticles. Optical characterizations are made using the UV-Vis spectrometer, PL, and FTIR. XRD shows the hexagonal structure of the CdS. SEM images and EDS measurements were made for the thin films. EPR shows the clear hyperfine lines corresponding to Mn2+ion in the CdS nanoparticles.

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Synthesis, structural and photocatalytic studies of Mn-doped CdS nanoparticles

Research on Chemical Intermediates ◽

10.1007/s11164-012-0586-x ◽

2012 ◽

Vol 39 (2) ◽

pp. 645-657 ◽

Cited By ~ 15

Author(s):

Ruby Chauhan ◽

Ashavani Kumar ◽

Ram Pal Chaudhary

Keyword(s):

Cds Nanoparticles ◽

Mn Doped

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Synthesis and study of optical and thermal properties of Mn doped CdS nanoparticles using polyvinylpyrrolidone

Journal of Luminescence ◽

10.1016/j.jlumin.2013.09.048 ◽

2014 ◽

Vol 146 ◽

pp. 325-332 ◽

Cited By ~ 13

Author(s):

M. Rajesh Kumar ◽

G. Murugadoss

Keyword(s):

Thermal Properties ◽

Cds Nanoparticles ◽

Mn Doped

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Synthesis and Characterization of Mn Doped CdS Quantum Dots from a Single Source Precursor

MRS Proceedings ◽

10.1557/proc-581-133 ◽

1999 ◽

Vol 581 ◽

Cited By ~ 1

Author(s):

M. Azad Malik ◽

Paul O'Brien ◽

N. Revaprasadu

Keyword(s):

Hexagonal Phase ◽

Tetrahedral Site ◽

Deep Trap ◽

Esr Spectra ◽

Cds Nanoparticles ◽

Near Band Edge ◽

Single Source ◽

High Resolution Tem ◽

Pl Spectrum ◽

Mn Doped

ABSTRACTCdS and Mn-doped CdS capped with TOPO (tri-n-octylphosphineoxide) have been prepared by a single source route using bis(methylhexyldithiocarbamato)cadmium(II) and manganese dichloride as precursors. The nanoparticles obtained show quantum size effects in their optical spectra with the CdS nanoparticles exhibiting near band-edge luminescence. The PL spectrum of the doped CdS nanoparticles have an emission maximum at 585 nm attributed to the 4T1-6A1 electronic transition of Mn in a tetrahedral site. However the PL spectrum changes over time (weeks) and gave a deep trap emission. The Selected Area Electron Diffraction (SAED) and X-ray diffraction (XRD) pattern show both CdS and the Mn doped CdS particles to be of the hexagonal phase. Transmission Electron Microscopy (TEM) and High Resolution TEM show well-defined images of nanosize particles with clear lattice fringes. ESR spectra and ICP results confirm the presence of Mn in the CdS nanoparticles.

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