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Study of the physical properties of CdTe (200): synthesized nanoparticles and grown thin film | ||
| Journal of Interfaces, Thin Films, and Low dimensional systems | ||
| دوره 5، شماره 1، بهمن 2021، صفحه 445-454 اصل مقاله (1.12 M) | ||
| نوع مقاله: Original Article | ||
| شناسه دیجیتال (DOI): 10.22051/jitl.2022.39417.1069 | ||
| نویسندگان | ||
| Marjan Monir Kamalian* ؛ Lida Babazadeh Habashi؛ Maryam Gholizadeh Arashti؛ Ebrahim Hasani | ||
| Department of Physics, Faculty of Science, Yadegar-e-Imam Khomeini (RAH) Shahr-e-Rey Branch, Islamic Azad University, Tehran, Iran | ||
| چکیده | ||
| In this work, cadmium telluride nanoparticles were synthesized by sonochemical method and then thin films with the thicknesses about of 100 nm were deposited on glass substrates using thermal evaporation technique at a substrate temperature of 200 °C and vacuum pressure of 2×10-5 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 (200).The size of the synthesized nanoparticles and crystallite size of the thin film grown on glass in the preferred orientation (200) were 16 nm &10.65 nm, respectively. Light absorbance spectra of nanoparticle and thin film obtained by UV-Vis spectroscopy at the wavelength range 600-1600 nm showed the increase of light absorption after deposition. The optical energy band gap was increased from 1.48 for nanoparticles to 1.51 for the deposited films. The SEM taken on the scale of 500 nm from nanoparticles and thin films showed the homogeneity and uniformity of both of them | ||
| کلیدواژه‌ها | ||
| Cadmium Telluride؛ Sonochemical؛ Thermal evaporation deposition؛ Crystallite size؛ Extinction coefficient | ||
| عنوان مقاله [English] | ||
| مطالعه خواص فیزیکی کادمیم تلوراید (200): سنتز نانوذرات و رشد لایه نازک | ||
| نویسندگان [English] | ||
| مرجان کمالیان؛ لیدا بابازاده حبشی؛ مریم قلی زاده آرشی؛ ابراهیم حسنی | ||
| گروه فیزیک، دانشکده علوم، واحد یادگار امام خمینی شهر ری، دانشگاه آزاد اسلامی، تهران، ایران. | ||
| چکیده [English] | ||
| در این کار، نانوذرات کادمیوم تلوراید به روش سونوشیمیایی سنتز شده و سپس لایه های نازک با ضخامت هایی در حدود 100 نانومتر به روش تبخیر حرارتی در دمای بستر 200 درجه سانتیگراد و فشار خلاء5- 10×2 میلی بار بر روی زیرلایه های شیشه لایه نشانی شدند. سونوشیمیایی یکی از بهترین روشها برای سنتز نانو مواد با اندازه ذرات خیلی کوچک است. پس از سنتز و لایه نشانی، لایه-های تهیه شده درون دستگاه های پراش پرتو ایکس (XRD)، طیف سنجی فرابنفش- مرئی (UV-Vis) و میکروسکوپ الکترونی روبشی (SEM) قرار گرفتند تا ساختار، خواص اپتیکی و مورفولوژی سطح آنها مطالعه و آنالیز شود. مطالعه الگوهای XRD نشان می دهد لایه های رشدیافته پلی کریستال با ساختار مکعبی دارای جهت گیری ترجیحی (200) می باشند. اندازه نانو ذرات سنتز شده و اندازه بلورینگی لایه نازک رشد یافته بر روی شیشه در راستای ترجیحی (200) به ترتیب 16 و 10/65 نانومتر بدست آمد. طیف های جذب نور از نانوذره و لایه نازک بدست آمده از طیف سنجی UV-Vis در محدوده طول موج 600-1600 نانومتر نشان دهنده افزایش مقدار جذب نور پس از لایه‌نشانی است. گاف انرژی اپتیکی از 1/48 الکترون ولت مربوط به نانو ذرات به 1/51 الکترون ولت مربوط به لایه رشدیافته افزایش می یابد. تصاویر مورفولوژی گرفته شده در مقیاس 500 نانومتر از نانو ذرات و سطح لایه نازک، همگنی و یکنواختی هر دو را نشان می دهد. | ||
| کلیدواژه‌ها [English] | ||
| کادمیوم تلوراید, سونوشیمیایی, لایه نشانی تبخیر حرارتی, اندازه بلورینگی, ضریب خاموشی | ||
| مراجع | ||
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