کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1548087 997719 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Vertically aligned ZnO nanorods on porous silicon substrates: Effect of growth time
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Vertically aligned ZnO nanorods on porous silicon substrates: Effect of growth time
چکیده انگلیسی

Vertically aligned ZnO nanorods were successfully grown on porous silicon (PS) substrates by chemical bath deposition at a low temperature. X-ray diffraction, field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM), and photoluminescence (PL) analyses were carried out to investigate the effect of growth duration (2 h to 8 h) on the optical and structural properties of the aligned ZnO nanorods. Strong and sharp ZnO (0 0 2) peaks of the ZnO nanorods proved that the aligned ZnO nanorods were preferentially fabricated along the c-axis of the hexagonal wurtzite structure. FESEM images demonstrated that the ZnO nanorod arrays were well aligned along the c-axis and perpendicular to the PS substrates regardless of the growth duration. The TEM image showed that the top surfaces of the ZnO nanorods were round with a smooth curvature. PL spectra demonstrated that the ZnO nanorods grown for 5 h exhibited the sharpest and most intense PL peaks within the ultraviolet range among all samples.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Progress in Natural Science: Materials International - Volume 25, Issue 2, April 2015, Pages 95–100
نویسندگان
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