HYDROGEN ANNEALING OF PTSI-SI SCHOTTKY-BARRIER CONTACTS

被引：9
|
作者：
TSAUR, BY
MATTIA, JP
CHEN, CK
机构：
[1] Lincoln Laboratory, Massachusetts Institute of Technology, Lexington
来源：
APPLIED PHYSICS LETTERS | 1990年 / 57卷 / 11期
关键词：
D O I：
10.1063/1.103507
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Schottky barrier PtSi-Si diodes formed by ultrahigh vacuum deposition and annealing of 1-nm-thick Pt films on n- and p-type (100) Si substrates were characterized by current-voltage measurements at liquid-nitrogen temperature. The diodes exhibited nearly ideal characteristics, with barrier heights of 0.914 and 0.197 eV, respectively, for typical n- and p-type devices. Subsequent annealing in hydrogen increased the barrier height by 0.013 eV for the n-type devices and decreased it by the same amount for the p-type devices. Vacuum annealing of H2-annealed devices restored the barrier heights to approximately their initial values. These results can be attributed to the presence of Si interface defects that are passivated by hydrogen incorporation and subsequently reactivated by vacuum annealing to remove the hydrogen.
引用
收藏
页码：1111 / 1113
页数：3
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