Synthesis and characterization of Mn doped ZnCdS core shell nanostructures QDs using a chemical precipitation route

Journal Article · Wed Apr 13 00:00:00 EDT 2016 · AIP Conference Proceedings

DOI:https://doi.org/10.1063/1.4945177· OSTI ID:22591075

Kaur, Manpreet ^[1]; Pandey, O. P. ^[2]; Sharma, Manoj ^[1]

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1. Department of Nanotechnology, Sri Guru Granth Sahib World University, Fatehgarh Sahib-140406, Punjab (India)
2. School of Physics and Materials Science, Thapar University, Patiala, Punjab (India)

With advancement in time, researchers has drawn great attention in the synthesis and characterization of mono dispersed alloyed nanocomposites of II-VI compounds. Ternary semiconductor alloyed ZnCdS quantum dots (QD’s) exhibit properties intermediate between those of ZnS and CdS. It shows high absorption coefficients, a composition tunable and size tunable band gap. Moreover, ZnCdS alloyed NC’s display unique composition dependent properties distinct from those of their bulk counterparts. The most striking feature of the alloyed NC’s nanocrystals is their unusual long time stability in emission wavelength. ZnCdS alloyed QD’s at room temperature has been synthesized using chemical precipitation method. Undoped and Mn{sup 2+} doped ZnCdS QDs have been synthesized and studied. UV-visible absorption spectrum shows absorbance in the visible region and photoluminescence (PL) emission spectra of the doped ZnCdS QD’s shows orange emission in comparison to weak blue emission from undoped QDs. The crystallite size is calculated from the XRD patterns. The experimental results indicate that this easy synthesis route would prove a versatile approach for the preparation of doped and undoped ZnCdS QD’s.

• OSTI ID: 22591075
• Journal Information: AIP Conference Proceedings, Vol. 1724, Issue 1; Conference: ETMN-2015: 2. international conference on emerging technologies: Micro to nano 2015, Rajasthan (India), 24-25 Oct 2015; Other Information: (c) 2016 Author(s); Country of input: International Atomic Energy Agency (IAEA); ISSN 0094-243X
• Country of Publication: United States
• Language: English

Related Subjects

77 NANOSCIENCE AND NANOTECHNOLOGY
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ABSORPTION SPECTRA
CADMIUM SULFIDES
COMPARATIVE EVALUATIONS
CRYSTAL STRUCTURE
DOPED MATERIALS
EMISSION SPECTRA
ENERGY GAP
MANGANESE IONS
NANOCOMPOSITES
PHASE STABILITY
PHOTOLUMINESCENCE
PRECIPITATION
QUANTUM DOTS
SEMICONDUCTOR MATERIALS
SYNTHESIS
TEMPERATURE RANGE 0273-0400 K
ULTRAVIOLET SPECTRA
VISIBLE SPECTRA
X-RAY DIFFRACTION
ZINC SULFIDES