Linear and non-linear optical properties of amorphous Se and M5Se95 (M $=$ Ge, Ga and Zn) films

Bulletin of materials science

GH ABBADY¹  Y SADDEEK³  K A ALY²  N AFIFIY¹ 

[1] Department of Physics, Faculty of Science, Assuit University, Assuit 71516, Egypt$$Department of Physics, Faculty of Science, Assuit University, Assuit 71516, EgyptDepartment of Physics, Faculty of Science, Assuit University, Assuit 71516, Egypt$$;Department of Physics, Faculty of Science, Assuit University, Assuit 71516, Egypt$$Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi Arabia$$Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt$$Department of Physics, Faculty of Science, Assuit University, Assuit 71516, EgyptDepartment of Physics, Faculty of Science, Assuit University, Assuit 71516, Egypt$$Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi Arabia$$Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt$$Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi ArabiaDepartment of Physics, Faculty of Science, Assuit University, Assuit 71516, Egypt$$Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi Arabia$$Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt$$Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, EgyptDepartment of Physics, Faculty of Science, Assuit University, Assuit 71516, Egypt$$Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi Arabia$$Physics Department, Faculty of Science, Al-Azhar University, Assiut Branch, Assiut 71524, Egypt$$;Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi Arabia$$Physics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi ArabiaPhysics Department, Faculty of Science and Arts Khulais, University of Jeddah, Jeddah 21589, Saudi Arabia$$

关键词: Thin films;    vapour deposition;    infrared spectroscopy;    optical properties.;   

DOI  :  

学科分类：材料工程

来源: Indian Academy of Sciences

【 摘 要 】

The variations in structure and optical properties of amorphous a-Se and a-M$_5$Se$_{95}$ (M = Ge, Ga and Zn) films have been studied based on FTIR and optical measurements. FTIR transmittance spectra for a-Se and a-M$_5$Se$_{95}$ (M $=$ Ge, Ga and Zn) glasses were measured as a function of wavenumber. The addition of Ge, Ga and Zn increases the vibrational frequency of the a-Se main band. The absorption edge of Ge$_5$Se$_{95}$ shifted towards long side of the wavelength in comparison with that of a-Se film. This shift increases gradually in the case of Ga$_5$Se$_{95}$ and Zn$_5$Se$_95$ films. So, the optical bandgap ofM5Se95 films was decreased, but the index of refraction was increased. The first and third order of electric susceptibility ($chi_{(1)}$ and $chi_{(3)}$) and non-linear index of refraction ($n_2$) were increased by adding Ge, Ga and Zn into a-Se.

【 授权许可】

Unknown