SEMICONDUCTOR DEVICES AND MATERIALS;
INDIUM COMPOUNDS;
OHMIC CONTACTS;
D O I:
10.1049/el:19921437
中图分类号:
TM [电工技术];
TN [电子技术、通信技术];
学科分类号:
0808 ;
0809 ;
摘要:
Two new metallisation systems, Pd/Pt and Cr/Au, for nonalloyed ohmic contacts on p+-InGaAs have been compared with the Ti/Pt contact. The observed strong dependence of the contact resistivity on the metal is related to its work function. The lowest resistivities are achieved with Pd/Pt, e.g. 1.2 x 10(-6) OMEGAcm2 for p = 1.7 x 10(19) cm-3.