Study of the physical properties of CdTe (۲۰۰): synthesized nanoparticles and grown thin film

سال انتشار: 1401
نوع سند: مقاله ژورنالی
زبان: انگلیسی
مشاهده: 163

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شناسه ملی سند علمی:

JR_JITF-5-1_004

تاریخ نمایه سازی: 9 مرداد 1401

چکیده مقاله:

In this work, cadmium telluride nanoparticles were synthesized by sonochemical method and then thin films with the thicknesses about of ۱۰۰ nm were deposited on glass substrates using thermal evaporation technique at a substrate temperature of ۲۰۰ °C and vacuum pressure of ۲×۱۰-۵ mbar. Sonochemical method is one of the best methods for synthesizing nanomaterials with very small particle sizes. After synthesis and deposition, the prepared films were subjected to x-ray diffraction, ultraviolet-visible spectroscopy and scanning electron microscopy to study the structure, optical properties and morphology of the films. XRD patterns indicated that the grown films were polycrystalline with a cubic structure on the preferred orientation (۲۰۰).The size of the synthesized nanoparticles and crystallite size of the thin film grown on glass in the preferred orientation (۲۰۰) were ۱۶ nm &۱۰.۶۵ nm, respectively. Light absorbance spectra of nanoparticle and thin film obtained by UV-Vis spectroscopy at the wavelength range ۶۰۰-۱۶۰۰ nm showed the increase of light absorption after deposition. The optical energy band gap was increased from ۱.۴۸ for nanoparticles to ۱.۵۱ for the deposited films. The SEM taken on the scale of ۵۰۰ nm from nanoparticles and thin films showed the homogeneity and uniformity of both of them

نویسندگان

مرجان کمالیان

Department of Physics, Faculty of Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

لیدا بابازاده حبشی

Department of Physics, Faculty of Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

مریم قلی زاده آرشی

Department of Physics, Faculty of Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

ابراهیم حسنی

Department of Physics, Faculty of Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran

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