High ε gate dielectrics Gd2O3 and Y2O3 for silicon

被引：250

作者：

Kwo, J ^{[1
]}

Hong, M ^{[1
]}

Kortan, AR ^{[1
]}

Queeney, KT ^{[1
]}

Chabal, YJ ^{[1
]}

Mannaerts, JP ^{[1
]}

Boone, T ^{[1
]}

Krajewski, JJ ^{[1
]}

Sergent, AM ^{[1
]}

Rosamilia, JM ^{[1
]}

机构：

[1] Lucent Technol, Bell Labs, Murray Hill, NJ 07974 USA

来源：

APPLIED PHYSICS LETTERS | 2000年 / 77卷 / 01期

关键词：

D O I：

10.1063/1.126899

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report on growth and characterization of both epitaxial and amorphous films Gd2O3 of (epsilon=14) and Y2O3 (epsilon=18) as the gate dielectrics for Si prepared by ultrahigh vacuum vapor deposition. The use of vicinal Si (100) substrates is key to the growth of (110) oriented, single-domain films in the Mn2O3 structure. Typical electrical leakage results are 10(-3) A/cm(2) at 1 V for single domain epitaxial Gd2O3 and Y2O3 films with an equivalent SiO2 thickness, t(eq) of 15 Angstrom, and 10(-6) A/cm(2) at 1 V for smooth amorphous Y2O3 films (epsilon=18) with a t(eq) of only 10 Angstrom. For all the Gd2O3 films, the absence of SiO2 segregation at the interface is established from infrared absorption measurements. (C) 2000 American Institute of Physics. [S0003-6951(00)04127-9].

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页码：130 / 132

页数：3

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