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摘要:
The field emission tip arrays with sub-100 nm apices (nanoFEAs) on single crystal cerium hexaboride (CeB6) surface were fabricated by the focused ion beam (FIB) milling microtechnology. The surface morphologies and field emissions of the nanoFEAs are systematically characterized. FIB milling, similar to the physical stripping process, can fabricate the nanoFEAs single crystal CeB6 with uniform morphologies. The nanoFEAs with sharp tips of size about 50 nm demonstrate the lowest turn-on electric fields (2.0 V/mu m), as well as a high current ( > 1 mA) at the field of 6.7 V/mu m and a high stable emission current. Such excellent performances make CeB6 nanoFEAs promising candidates for application in field emission electronics.
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来源 :
FUNCTIONAL MATERIALS LETTERS
ISSN: 1793-6047
年份: 2023
期: 01
卷: 16
1 . 3 0 0
JCR@2022
ESI学科: MATERIALS SCIENCE;
ESI高被引阀值:26
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