کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7906620 1510755 2018 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Determination of the optical absorption spectra of thin layers from their photoacoustic spectra
ترجمه فارسی عنوان
تعیین طیف جذب نوری لایه های ناز از طیف های فوتوکوسیتی
کلمات کلیدی
طیف سنجی فوتوکوسیت، طیف جذب نوری طیف، فیلم نیمه هادی نازک،
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سرامیک و کامپوزیت
چکیده انگلیسی
This paper presents a new method for computations of the optical absorption coefficient spectra from the normalized photoacoustic amplitude spectra of thin semiconductor samples deposited on the optically transparent and thermally thick substrates. This method was tested on CuIn(Te0.7Se0.3)2 thin films. From the normalized photoacoustic amplitude spectra, the optical absorption coefficient spectra were computed with the new formula as also with the numerical iterative method. From these spectra, the value of the energy gap of the thin film material and the type of the optical transitions were determined. From the experimental optical transmission spectra, the optical absorption coefficient spectra were computed too, and compared with the optical absorption coefficient spectra obtained from photoacoustic spectra.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Optical Materials - Volume 79, May 2018, Pages 196-199
نویسندگان
, , , , ,