کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1669343 1008882 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The influence of lanthanum doping position in ultra-thin HfO2 films for high-k gate dielectrics
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد فناوری نانو (نانو تکنولوژی)
پیش نمایش صفحه اول مقاله
The influence of lanthanum doping position in ultra-thin HfO2 films for high-k gate dielectrics
چکیده انگلیسی

Lanthanum dopant positioning at HfO2 ultra-thin films was achieved by the co-sputtering method. The physical properties of graded doping HfO2/HfLaO/p-Si and HfLaO/HfO2/p-Si structures after 850 °C postannealing were compared. The thickness of the monolayer was analyzed by X-ray reflectivity and confirmed by the multiple beam interference model. The HfO2 and silicate phases were characterized by X-ray diffraction patterns. It is found that crystallization depends on the ratio of stacked film thicknesses, and the HfLaO/HfO2/Si structure has more silicate formation at the interface than the HfO2/HfLaO/Si structure. Metal–insulator–semiconductor capacitors were fabricated. The electrical properties including leakage current, conduction mechanism, flatband voltage shift, and barrier height were studied.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thin Solid Films - Volume 518, Issue 24, 1 October 2010, Pages 7455–7459
نویسندگان
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