Novel structure of a silicon field emission cathode with a sputtered TiW gate electrode
作者:
Sung Weon Kang,
Jin Ho Lee,
Byoung Gon Yu,
Kyoung-Ik Cho,
Hyung Joun Yoo,
期刊:
Journal of Vacuum Science&Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena
(AIP Available online 1998)
卷期:
Volume 16,
issue 1
页码: 242-246
ISSN:1071-1023
年代: 1998
DOI:10.1116/1.589788
出版商: American Vacuum Society
关键词: Si;TiW
数据来源: AIP
摘要:
A novel technique for a gated silicon field emission cathode is proposed in order to decrease the spacing between the tip and the gate electrode of the device, which leads to low voltage operation. This technique is based on the filling characteristics of the sputteredTi0.1W0.9layer, which is used as the gate electrode in the shadowed area surrounding the tip with good step coverage. This process is completely compatible to conventional 1.2 μm complementary metal–oxide–semiconductor standard processes. The experimental results indicate that the diameter of the gate hole is greatly reduced to a subhalf-micron dimension(∼0.4 μm)even when starting with an initial mask size of 1.2 μm. TheI–Vcharacteristics of the cathodes show low turn-on voltages(∼25 V)in high vacuum(<3.0×10−7 Torr).The Fowler–Nordheim plots also show good linearity.
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