Structural, optical and magnetic properties of Cd doped ZnO nanomaterials for optoelectronic device application

Cd-doped ZnO nanopowder is synthesized by solid-state reaction. XRD pattern shows a sharp pinnacle at θ = 36° which corresponds to (101) plane. Cd-doped ZnO powder shows a little aggleromation indicating that each grain is made of semicrystalline nature with little humps. FTIR shows a high intense broad IR band at 4350 cm⁻¹ corresponding to the O–H stretching vibration. Raman studies clearly shows that the relays of two different peaks which are observed at 315 and 531 cm⁻¹. Impedance plots state that the decrement in Z′ with expanding recurrence might be because of the increment of the AC conductivity. Dielectric behaviour occurs due to the large formation of grains associated with host lattice. Photosensitivity is found to be as high as 86% at input power of 120 mW. From the optical studies, the bandgap energy is measured and it is found to be 3.15 eV. Photoluminescence studies reveal that the sharp peak tends to move so wide as luminescent range changes from red to blue. The peak which has been seen at 631 nm indicates the green. EPR range demonstrates that Cd particles are in mutilated octahedral sties. The magnetic properties lie in the sample with the Cd fixation expands and the molecules can come close to each other and forms the clusters. These results suggest that these materials can be used for optoelectronic and luminescent device applications.