کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
303054 512574 2006 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Effects of oxide layers and metals on photoelectric and optical properties of Schottky barrier photodetector
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی های تجدید پذیر، توسعه پایدار و محیط زیست
پیش نمایش صفحه اول مقاله
Effects of oxide layers and metals on photoelectric and optical properties of Schottky barrier photodetector
چکیده انگلیسی

Recently, a lot of attention has been paid to Schottky barrier photo detectors due to their promising properties and easy of fabrication. Many samples of SB devices prepared by thermal deposition under high vacuum are studied in this research. Different types and thicknesses of oxides were deposited on silicon substrate. Metals of different types and thicknesses were deposited on top of oxides. Variation of photogenerated current, responsivity, quantum efficiency and detectivity as a function of incident light wavelength were measured. It was found that the shape of the curves has two maxima, one was around 500 nm and the other was around 700 nm. Ni (1 0 0)–SiO2–Si structure shows the maximum responsivity at 550 nm and it is equal to 400 mA/W. When comparison was made between devices of different metals, the nickel layer device showed high responsivity at visible region while the aluminum layer device showed high responsivity at near infrared region. Finally, the aluminum layer device showed detectivity higher than nickel layer device. The maximum detectivity of aluminum device was 6.4×1010 cm/Hz W.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Renewable Energy - Volume 31, Issue 10, August 2006, Pages 1493–1503
نویسندگان
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