ePubs

The open archive for STFC research publications

Full Record Details

Persistent URL http://purl.org/net/epubs/work/20741
Record Status Checked
Record Id 20741
Title Optimisation of silicon FEAs fabrication for space application,
Contributors
Abstract Optimization of fabrication of silicon field-emission arrays has been carried out on 4 in. silicon wafers for field-emission electric propulsion neutralizer application. A mixture of SF6, O2, and Ar for silicon tip etches has been optimized to improve the uniformity and process repeatability. A thin aluminum nitride (AlN) film has been coated on gated emitter arrays to enhance the field at the tip and to protect tips from ion bombardment. A statistical analysis of emission characteristic shows a narrow distribution of the turn-on voltage from array to array, which makes it possible to achieve a few milliamperes current emission by connecting several arrays in parallel. Lifetime tests over 1000 h have been carried out on single arrays, producing in excess of 10 µA of emission current under continuous mode of operation.
Organisation CCLRC , SSTD , CMF , EID
Keywords Physics , 07.87.+v , 79.70.+q , 85.45.Db
Funding Information
Related Research Object(s):
Language English (EN)
Type Details URI(s) Local file(s) Year
Journal Article J Vac Sci Technol B 22, no. 3 (2004): 1071-1023. doi:10.1116/1.1736641 2004
Showing record 1 of 1
RCUK
Science and Technology Facilities Council Switchboard: 01793 442000