Optical Analytical Studies of Electrostatic-Sprayed Eu-doped Cadmium Selenide Nanofilms at Different Temperatures

Автор(ы) M.D. Jeroh, A.J. Ekpunobi , D.N. Okoli

Department of Physics and Industrial Physics, Nnamdi Azikiwe University, Awka, Nigeria

Е-mail jeruaye@gmail.com
Выпуск Том 10, Год 2018, Номер 3
Даты Получено 27.02.2018; в отредактированной форме 07.06.2018; опубликовано online 25.06.2018
Ссылка M.D. Jeroh, A.J. Ekpunobi, D.N. Okoli, J. Nano- Electron. Phys. 10 No 3, 03006 (2018)
DOI https://doi.org/10.21272/jnep.10(3).03006
PACS Number(s) 78.20.Ci, 78.40.Fy, 78.66.Hf
Ключевые слова Photon Energy, Optical Constants (10) , Band gap (27) , Substrate temperature (2) , Blue-shift, Electromagnetic spectrum.

Electrostatic spray pyrolysis was utilized to grow nanofilms of Eu-doped cadmium selenide at different temperatures. Optical analysis performed on the grown films reveals extremely poor reflection and absorption of light throughout the visible spectrum. However, high transmission was determined at higher wavelengths (visible spectrum) for the films. Other optical constants such as absorption coefficient, optical conductivity, refractive index, extinction coefficient, dielectric constants (imaginary and real), sum of both dielectric constants (imaginary and real) are analyzed. Optical band gap studies disclosed the band gaps of CdSe:Eu films were blue-shifted from CdSe bulk value (1.75 eV); from 2.4 eV to 2.84 eV.

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