کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1664607 1518016 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Mechanical and electrical properties of DC magnetron sputter deposited amorphous silicon nitride thin films
ترجمه فارسی عنوان
خواص مکانیکی و الکتریکی دی اکسیدکربن دی مگننرون نانو ذرات سیلیکن نیترید ناپایدار
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
چکیده انگلیسی


• Amorphous SiN thin films were deposited by DC magnetron sputtering.
• Biaxial stress and chemical composition were tailored by back pressure and plasma power.
• Ohmic and Poole–Frenkel type leakage current mechanisms were identified.
• Defect density correlates with kinetic energy of sputtered particles.

Amorphous silicon nitride SiNx thin films in a thickness range of 40 to 500 nm were deposited onto (100) silicon wafers using DC magnetron sputtering. The biaxial stress of the films was found to be tuneable in the range of − 1300 MPa (compressive) to almost 0 by varying the plasma power density and the back pressure in the deposition chamber. The films were close to stoichiometric composition with x ranging from 1.27 to 1.34. The refractive index n decreases from 2.10 to 1.97 with increasing back pressure, indicating compositional changes in the thin films. This finding, however, was not confirmed by Fourier-Transform Infrared Spectroscopy measurements. On the other hand, lower wet chemical etch rates revealed a larger robustness of layers deposited at conditions where the mean kinetic energy of the sputtered particles is higher. Temperature dependent leakage current measurements using Au/Cr/SiNx/Si MIS (metal–insulator–semiconductor) structures between 25 and 300 °C have shown that ohmic and Poole–Frenkel conduction mechanisms dominate the leakage current behaviour at electrical fields ranging up to 0.5 MV/cm. The extracted physical parameters such as the corresponding activation energies were found to be mildly affected by the deposition parameters.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 589, 31 August 2015, Pages 227–232
نویسندگان
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