期刊
NANOSCALE RESEARCH LETTERS
卷 4, 期 9, 页码 1115-1119出版社
SPRINGEROPEN
DOI: 10.1007/s11671-009-9363-1
关键词
Field emission; Metal oxide; Plasma treated
Hematite nanoflakes have been synthesized by a simple heat oxide method and further treated by Argon plasmas. The effects of Argon plasma on the morphology and crystal structures of nanoflakes were investigated. Significant enhancement of field-induced electron emission from the plasma-treated nanoflakes was observed. The transmission electron microscopy investigation shows that the plasma treatment effectively removes amorphous coating and creates plenty of sub-tips at the surface of the nanoflakes, which are believed to contribute the enhancement of emission. This work suggests that plasma treatment technique could be a direct means to improve field-emission properties of nanostructures.
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