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논문 기본 정보

저자정보
(Chungnam National Univ.) (Chungnam National Univ.) (Yonsei Univ.) (Chungnam National Univ.)
저널정보
대한전자공학회 JOURNAL OF SEMICONDUCTOR TECHNOLOGY AND SCIENCE Journal of Semiconductor Technology and Science Vol.15 No.1
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    초록·키워드

    In this paper, the effective electron Schottky barrier height (Ф<SUB>Bn</SUB>) of the Ni silicide/nsilicon (100) interface was studied in accordance with different thicknesses of the antimony (Sb) interlayer for high performance n-channel MOSFETs. The Sb interlayers, varying its thickness from 2 nm to 10 nm, were deposited by radio frequency (RF) sputtering on lightly doped n-type Si (100), followed by the in situ deposition of Ni/TiN (15/10 ㎚). It is found that the sample with a thicker Sb interlayer shows stronger ohmic characteristics than the control sample without the Sb interlayer. These results show that the effective Ф<SUB>Bn</SUB> is considerably lowered by the influence of the Sb interlayer. However, the current level difference between Schottky diodes fabricated with Sb/Ni/TiN (8/15/10 ㎚) and Sb/Ni/TiN (10/15/10 ㎚) structures is almost same. Therefore, considering the process time and cost, it can be said that the optimal thickness of the Sb interlayer is 8 nm. The effective Ф<SUB>Bn</SUB> of 0.076 eV was achieved for the Schottky diode with Sb/Ni/TiN (8/15/10 ㎚) structure. Therefore, this technology is suitable for high performance n-channel MOSFETs.

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      UCI(KEPA) : I410-ECN-0101-2016-569-001356888