کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5358219 1503617 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study on the introduction of Se into CdS thin films: Influence on the kinetics of the deposition and the structural and optical properties
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Study on the introduction of Se into CdS thin films: Influence on the kinetics of the deposition and the structural and optical properties
چکیده انگلیسی
CdS and CdS0.75Se0.25 thin films were prepared at different deposition times (5-180 min) and at 75 °C by chemical solution deposition. All the films are polycrystalline in nature; in the case of CdS, a mixture of cubic and hexagonal phase is present whereas the CdS0.75Se0.25 films show hexagonal phase. The CdS films are dense and homogeneous with good crystalline quality and band gap (Eg) values close to that of bulk material (2.48-2.52 eV). The properties of CdS0.75Se0.25 films are mainly affected by the deposition time. The growth is slow and disordered, the crystalline quality is low, and the increase of the strain is perceivable. The Eg changes from 2.41 to 2.25 eV. Room photoluminescence has been observed in both materials. The kinetics of the growth and the consumption rate of Cd, have a similar behavior for both systems presenting a two-regime process, however, the growth rate decreases when the Se is incorporated to the chemical solution.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 347, 30 August 2015, Pages 35-39
نویسندگان
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