کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5489636 1524370 2017 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Photoluminescence properties of MgxZn1−xO films grown by molecular beam epitaxy
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Photoluminescence properties of MgxZn1−xO films grown by molecular beam epitaxy
چکیده انگلیسی
The optical properties of MgxZn1−xO films with x=0.03, 0.06, 0.08, and 0.11 grown by molecular beam epitaxy (MBE) have been studied by temperature-dependent photoluminescence (PL) measurement. It is presented that the full-width at half-maximum (FWHM) of the 12 K PL spectrum of MgZnO films increases with increasing Mg concentration and would deviate significantly from the simulation curve of Schubert model with higher Mg contents. The abnormal broader PL FWHM is inferred from larger compositional fluctuation by incorporating higher Mg contents, which results in larger effect of excitonic localization to induce more significant S-shaped behavior of the PL peak energy with temperature dependence. Additionally, the degree of localization increases as the linear proportion of the PL FWHM, indicating that the excitonic behavior in MgZnO films belong to the strong localization effect.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Crystal Growth - Volume 459, 1 February 2017, Pages 13-16
نویسندگان
, , , , , , , ,