Zhu W, Kochanski GP, Jin S
Bell Laboratories, Lucent Technologies, 600 Mountain Avenue, Murray Hill, NJ 07974, USA.
Science. 1998 Nov 20;282(5393):1471-3. doi: 10.1126/science.282.5393.1471.
Strong and sustained electron emission at low electric fields was observed in undoped, nanostructured diamond. Electron emission of 10 milliamperes per square centimeter was observed at applied fields of 3 to 5 volts per micrometer. These are the lowest fields ever reported for any field-emitting material at technologically useful current densities. The emitter consists of a layer of nanometer-size diamond particulates, which is heat-treated in a hydrogen plasma. These emission characteristics are attributed to the particles' high defect density and the low electron affinity of the diamond surface. Such emitters are technologically useful, because they can be easily and economically fabricated on large substrates.
在未掺杂的纳米结构金刚石中观察到了在低电场下强烈且持续的电子发射。在每微米3至5伏的外加电场下，观察到每平方厘米10毫安的电子发射。这是在技术上有用的电流密度下，任何场发射材料所报道的最低电场。发射极由一层纳米尺寸的金刚石颗粒组成，该层在氢等离子体中进行热处理。这些发射特性归因于颗粒的高缺陷密度和金刚石表面的低电子亲和性。这种发射极在技术上很有用，因为它们可以很容易且经济地在大尺寸衬底上制造。
