標題: EFFECT OF FLUORINE INCORPORATION ON THE THERMAL-STABILITY OF PTSI/SI STRUCTURE
作者: TSUI, BY
TSAI, JY
WU, TS
CHEN, MC
交大名義發表
電子工程學系及電子研究所
National Chiao Tung University
Department of Electronics Engineering and Institute of Electronics
公開日期: 1-Jan-1993
摘要: The effect of fluorine incorporation on PtSi/Si structure is studied systematically. It is observed that the fluorine incorporation from ion implantation improves the high-temperature stability of the PtSi/Si structure. The optimum implantation energy is determined to be the energy at which the maximum percentage of the as-implanted fluorine ion locates at the PtSi/Si interface region. The SIMS analysis shows that the fluorine atom piles up at the PtSi/Si interface. The XPS analysis indicates that the fluorine atoms at the PtSi/Si interface are bonded to the silicon atoms in a form of SiF2 or SiF3. A fluorine-buffer (FB) model is proposed to explain the effect of fluorine incorporation. It is postulated that the Si-F layer acts as a buffer layer to change the PtSi/Si interface energy and preserve the integrity of the silicide layer at high temperature. Fluorinated Schottky junctions are fabricated and the electrical characteristics show that the sustainable process temperature can be improved from 650-degrees-C for the unfluorinated Schottky junctions to higher than 800-degrees-C for the fluorinated Schottky junctions.
URI: http://dx.doi.org/10.1109/16.249424
http://hdl.handle.net/11536/3161
ISSN: 0018-9383
DOI: 10.1109/16.249424
期刊: IEEE TRANSACTIONS ON ELECTRON DEVICES
Volume: 40
Issue: 1
起始頁: 54
結束頁: 63
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