ELECTRICAL-PROPERTIES AND STRUCTURES OF THE MOCVD-AIN/GAAS INTERFACE

被引:4
作者
FUJIEDA, S [1 ]
AKIMOTO, K [1 ]
HIROSAWA, I [1 ]
MOCHIZUKI, Y [1 ]
MIZUKI, J [1 ]
MATSUMOTO, Y [1 ]
MATSUI, J [1 ]
机构
[1] NEC CORP LTD,RES & DEV GRP,KAWASAKI,KANAGAWA 213,JAPAN
关键词
D O I
10.1016/0169-4332(89)90113-X
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
The GaAs surface pretreatment conditions for MOCVD-AlN/GaAs MIS diodes are investigated. The electrical properties and their thermal stability were drastically improved by a pure H2 pretreatment and a PH3 pretreatment of the GaAs surface at 500°C prior to the AlN deposition. This fact suggests that excess As generates interface states, which can be decreased by a surface stoichiometry control to reduce the As concentration. Grazing incidence X-ray diffraction measurements revealed 1×4 and 1×6 superstructures at the interface between the H2-pretreated GaAs and the AlN film deposited at 220°C. © 1989.
引用
收藏
页码:516 / 521
页数:6
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