Optical and structural characterization of CdSe:Eu films at different volumes of europium concentration.
الموضوعات : Journal of Theoretical and Applied Physics
Diemiruaye Jeroh
1
(Department of Physics, Nnamdi Azikiwe University, Awka, Nigeria.)
Azubike Ekpunobi
2
(Department of Physics, Nnamdi Azikiwe University, Awka, Nigeria.)
Donald Okoli
3
(Department of Physics, Nnamdi Azikiwe University, Awka, Nigeria.)
الکلمات المفتاحية: Hexagonal, nanomaterials, Spray Pyrolysis, Electrostatic, Wurtzite,
ملخص المقالة :
Cadmium selenide films were prepared at different volumes of dopant (Europium) concentration by electrostatic-spray-pyrolysis technique. Optical results reveal low absorption and reflection with a corresponding high transmission in the visible region. Strong blue-shift is observed for the band gap energy in all cases of growth, indicating quantum confinement effect. Scanning electron studies reveal relatively smooth surface with small-sized grains on the surface. XRD confirms the crystalline nature of the films having hexagonal (wurtzite) structure with reduction in crystallinity of the film at increased volume of dopant concentration. EDX analysis confirmed the growth of CdSe:Eu film.
