Synthesis and Structural Investigations of Cu, Mn doped Cd1-xZnxS Quantum Dots

Abstract

A desirable quality of copper and manganese codoped Cd 1-x Zn x S (x≤1) quantum dots have been synthesized successfully using chemical co-precipitation method at room temperature. Structural investigations of the synthesized samples were carried out by powder XRD, TEM FTIR and AFM techniques. Further, the XRD results confirm that Cu and Mn codoped Cd 1-x Zn x S nanocrystallites exhibit wurtzite structure. Lattice strain and average nanocrystallite size in the range 2-4 nm have been determined. The FTIR analysis identifies absorption peaks of Cd-S/Zn-S stretching modes along with presence of some moisture content in the synthesized samples. The TEM analysis further confirms polycrystalline nature of Cu, Mn doped Cd 1-x Zn x S (x≤1) nanocrstallites by SAED pattern and corresponding histograms give the particle size distribution.