کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10411111 894548 2005 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The barrier height inhomogeneity in identically prepared Au/n-GaAs Schottky barrier diodes
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی برق و الکترونیک
پیش نمایش صفحه اول مقاله
The barrier height inhomogeneity in identically prepared Au/n-GaAs Schottky barrier diodes
چکیده انگلیسی
We have prepared small Au/n-GaAs Schottky barrier diodes (SBDs) using e-beam lithography (EBL), and obtained their effective barrier heights (BHs) and ideality factors from current-voltage (I/V) characteristics, which were measured using a conducting probe atomic force microscope (CP-AFM). Although the diodes were all identically prepared, there was a diode-to-diode variation: the effective BHs ranged from 0.795 eV to 0.836 eV, and the ideality factor from 1.025 to 1.101. Lateral homogeneous BHs were computed from the observed linear correlation between BH and ideality factor using the method of Schmitsdorf et al. [Schmitsdorf RF, Kampen TU, Mönch W. J Vac Sci Technol B 1997;15(4):1221]. These homogeneous BHs were also obtained from the fit to the experimental I/V characteristics of the current through a “patchy” diode. From our model, the barrier height in the patches and their diameter could be determined. It are however the homogeneous BHs which should be used to make theories of the physical mechanisms responsible for the Schottky barrier height of the metal-semiconductor combination considered.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solid-State Electronics - Volume 49, Issue 6, June 2005, Pages 878-883
نویسندگان
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