کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1690683 1011271 2006 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
A study on the interface and bulk charge density of AlN films with sputtering pressure
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
A study on the interface and bulk charge density of AlN films with sputtering pressure
چکیده انگلیسی

An attempt to correlate deposition-induced effects and the morphological properties with the electrical properties of the aluminum nitride (AlN) films have been made. The AlN film was sputter deposited on silicon while increasing the pressure in steps from 2×10−3 to 8×10−3 mbar. An X-ray diffractogram revealed that the intensity of (0 0 2) orientation increased till 6×10−3 mbar pressure, but it changed to (1 0 0) orientation of the AlN film at 8×10−3 mbar. The FTIR spectra of the absorption band of the films were observed around 682 cm−1 and became prominent at 6×10−3 mbar. A decrease in the grain size was seen by SEM images at 8×10−3 mbar. The AFM measurements revealed that the surface roughness varied from 1.56 to 3.24 nm with pressure. It was found that the insulator charge density (Qin) increased from 1.4×1011 cm−2 to 1.3×1012 cm−2 with increase in pressure. On the other hand, the interface state density (Dit) was found minimum (7.3×1011 eV−1 cm−2) at 6×10−3 mbar. It is found that presence of the Qin and Dit are primarily governed by the sputtering pressure of the AlN film.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 81, Issue 4, 6 November 2006, Pages 494–498
نویسندگان
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