Field emission properties of ion beam synthesized SiC/Si heterostructures by MEVVA implantation

被引：0
|
作者：
Chen, DH [1 ]
Wong, SP [1 ]
Cheung, WY [1 ]
Luo, EZ [1 ]
Wu, W [1 ]
Xu, JB [1 ]
Wilson, IH [1 ]
Kwok, RWM [1 ]
机构：
[1] Chinese Univ Hong Kong, Dept Elect Engn & Mat Sci, Shatin, Hong Kong
来源：
MATERIALS ISSUES IN VACUUM MICROELECTRONICS | 1998年 / 509卷
关键词：
D O I：
10.1557/PROC-509-199
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：
Planar SiC/Si heterostructures were formed by high dose carbon implantation using a metal vapor vacuum are ion source. The variations of the field emission properties with the implant dose and annealing conditions were studied. A remarkabIy low turn-on field of 1V/mu m was observed from a sample implanted at 35 keV to a dose of 1.0x10(18) cm(-2) with subsequent annealing in nitrogen at 1200 degrees C for 2h. The chemical composition depth profiles were determined from x-ray photoelectron spectroscopy and the surface morphology was observed by atomic force microscopy. The formation of a thin surface stoichiometric SiC layer and the formation of densely distributed small protrusions on the surface are believed to be the two factors responsible for the efficient electron field emission.
引用
收藏
页码：199 / 204
页数：6
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