发明授权
US6084340A Electron emitter with nano-crystalline diamond having a Raman spectrum
with three lines
失效
带有三线拉曼光谱的纳米晶金刚石的电子发射体
- 专利标题： Electron emitter with nano-crystalline diamond having a Raman spectrum with three lines
- 专利标题（中）： 带有三线拉曼光谱的纳米晶金刚石的电子发射体
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申请号： US253082申请日： 1999-02-19
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公开(公告)号： US6084340A公开(公告)日： 2000-07-04
- 发明人: Peter Bachmann , Detlef Wiechert , Klaus Rademacher , Howard Wilson
- 申请人： Peter Bachmann , Detlef Wiechert , Klaus Rademacher , Howard Wilson
- 申请人地址： NY New York
- 专利权人： U.S. Philips Corporation
- 当前专利权人： U.S. Philips Corporation
- 当前专利权人地址： NY New York
- 优先权： DEX19727606 19970628
- 主分类号： H01J1/30
- IPC分类号： H01J1/30 ; H01J1/308 ; H01J1/05 ; H01J1/02 ; H01J1/16 ; H01J63/04
摘要：
In an electron-emitting component with a cold cathode comprising a substrate and a cover layer with a diamond-containing material consisting of nano-crystalline diamond having a Raman spectrum with three lines, i.e. at K=1334.+-.4 cm.sup.-1 with a half-width value of 12.+-.6 cm.sup.-1, at K=1140.+-.20 cm.sup.-1 and at K=1470.+-.20 cm.sup.-1, the cold cathode exhibits a low extraction field strength, a stable emission at pressures below 10.sup.-4 mbar, a steep current-voltage characteristic and stable emission currents in excess of 1 microampere/mm.sup.2. The electron emission of the component demonstrates a long-time stability, and a constant intensity of the electron beam across its cross-section.
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