Growth of hydrogenated silicon cluster ions using an ion trap

被引:18
作者
Hiura, H
Kanayama, T
机构
[1] JRCAT, Natl Inst Adv Interdisciplinary Res, Tsukuba, Ibaraki 3058562, Japan
[2] JRCAT, Angstrom Technol Partnership, Tsukuba, Ibaraki 3050046, Japan
关键词
D O I
10.1016/S0009-2614(00)00941-6
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Medium-sized hydrogenated silicon cluster ions, SinHx+ (10 < n < 50), have been produced using an ion trap filled with silane (SiH4) at a pressure of similar to 10(-6) Torr. Time-resolved time-of-flight mass spectroscopic measurements revealed that there are two kinds of fast, efficient, cluster growth occurring via repetitive increments of eight Si atoms. One cluster growth continued beyond Si54Hx+, which has a considerably larger n value than has been previously reported (n less than or equal to 10). Experimental evidence indicates that neutral SinHx molecules, where n = 6-8, formed from SiH4 and accumulated on the chamber wall, serve as the source material for both successive reactions. (C) 2000 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:409 / 414
页数:6
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