Electrical properties of inalp native oxides for metal-oxide-semiconductor device applications
Electrical properties of inalp native oxides for metal-oxide-semiconductor device applications
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用于金属氧化物半导体器件应用的 inalp 天然氧化物的电性能
DOI:
10.1063/1.1861981
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发表时间:
2004
影响因子:
5.1
通讯作者:
Z. Liliental
中科院分区:
文献类型:
--
作者:
Yu Cao;J. Zhang;Xiang Li;T. Kosel;P. Fay;D. Hall;Xiaohong Zhang;R. Dupuis;J. Jasinski;Z. Liliental
Data are presented on the insulating properties and capacitance-voltage (CV) characteristics of metal-oxide-semiconductor (MOS) device-thickness (below approx. 100 nm) native oxides formed by wet thermal oxidation of thin InAlP epilayers lattice matched to GaAs. Low leakage current densities of J=1.4 x 10-9 A/cm2 and J=8.7 x 10-11 A/cm2 are observed at an applied field of 1 MV/cm for MOS capacitors fabricated with 17 nm and 48 nm oxides, respectively. TEM images show that the In-rich interfacial particles which exist in 110 nm oxides are absent in 17 nm oxide films. Quasi-static capacitance-voltage measurements of MOS capacitors fabricated on both n-type and p-type GaAs show that the InAlP oxide-GaAs interface is sufficiently free of traps to support inversion, indicating an unpinned Fermi level. These data suggest that InAlP native oxides may be a viable insulator for GaAs MOS device applications.