Abstract
Abstract Cu single doped and Cu, Mn co-doped Cd0.7Zn0.3S nanocrystals were synthesized successfully by co-precipitation method. XRD results confirmed hexagonal structure of as prepared Cu single doped and Cu, Mn co-doped Cd0.7Zn0.3S samples. The lattice constants, lattice plane, d-spacing, unit cell volume, Lorentz factor and dislocation density were also determined. The SEM analysis shows aggregation and nonuniform shapes of nanoparticles. The EDX spectra indicate the presence of S, Cd, Zn, Cu, Mn along with N and O in our samples. Absorption spectra shows maximum absorption in the range 209–236 nm with a shoulder peak at 277–299 nm which confirms a blue shift in comparison to bulk spectra. The photoluminescence (PL) spectra of Cu single doped samples shows blue-green emission centered at 428 and 488 nm. In Cu, Mn co-doped samples, higher intensity in blue green region at 458 and 488 nm attributed due to the sulfur vacancy and Zn defects respectively.
Published Version
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