题名 |
Interface Constraints in InP MIS Structures |
作者 |
C. H. Kim;Byungdoo Choe;H. Lim;J. I. Lee;K. N. Kang |
关键词 | |
期刊名称 |
Chinese Journal of Physics |
卷期/出版年月 |
30卷5期(1992 / 10 / 01) |
页次 |
785 - 796 |
内容语文 |
英文 |
英文摘要 |
This work is a study on the role of the interface defects on the nonuniformity of device characteristics for various InP Metal-Insulator-Semiconductor (MIS) diodes such as plasma oxide/InP, MOCVD-grown Al2O3/InP and PECVD-grown Si3N4/InP. Our investigations are concentrated on the compositional structures at the insulator/semiconductor interface and their effects on the electrical properties of the MIS diodes. The sputtering Auger analysis and the frequency dependent C-V measurements on the plasma oxide/InP diode showed that the interface chemistry is important for the stable electrical characteristics. In Al2O3/p-InP structure, the pinning of the surface Fermi level could be induced by the tunnel trapping of free charges into the insulator due to the existence of a potential barrier for the detrapping of charges as well as the charge trapping centers. In the case of Si3N4/n-InP, any potential barrier for the detrapping of tunnel captured electrons is not observed. It is also found that the trapping mechanism in Si3N4/InP structure is different form that of SiO2nP structure. The effect of sulfuration of InP surface on the stability of interface properties is also discussed. |
主题分类 |
基礎與應用科學 >
物理 |
被引用次数 |