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| 单颗粒CVD金刚石的场发射 | |
| 引用本文： | 元光,郭大勃,顾长志,窦艳,宋航.单颗粒CVD金刚石的场发射[J].物理学报,2007,56(1):143-146. |
| 作者姓名： | 元光 郭大勃 顾长志 窦艳 宋航 |
| 作者单位： | 1. 中国海洋大学物理系,青岛,266100 2. 中国科学院物理研究所表面物理重点实验室,北京,100080 3. 中国科学院长春光学精密机械与物理研究所,长春,130033 |
| 基金项目： | 国家重点基础研究发展计划(973计划) |
| 摘 要： | 利用改造的扫描电子显微镜(SEM)设备，在SEM腔体中利用钨(W)探针测试了单颗粒金刚石的I-V与场发射特性，结果表明结晶良好的金刚石的I-V特性服从欧姆定律，而孤立的菜花状金刚石颗粒(cauliflower-like diamond)的I-V特性基本符合Pool-Frenkel输运特性.场发射特性表明，结晶良好的金刚石薄膜基本没有场发射，而孤立的菜花状的金刚石颗粒具有一定的场发射.CVD金刚石的场发射过程中，缺陷对电子的输运起主导作用. |
| 关 键 词： | 场发射 金刚石颗粒 I-V特性 Pool-Frenkel输运 |
| 文章编号： | 1000-3290/2007/56(01)/0143-04 |
| 收稿时间： | 2004-12-20 |
| 修稿时间： | 12 20 2004 12:00AM |
Field emission from single diamond particle |
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| Yuan Guang,Guo Da-Bo,Gu Chang-Zhi,Dou Yan,Song Hang.Field emission from single diamond particle[J].Acta Physica Sinica,2007,56(1):143-146. | |
| Authors: | Yuan Guang Guo Da-Bo Gu Chang-Zhi Dou Yan Song Hang |
| Abstract: | The I-V characteristics of a diamond particle deposited by hot-filament chemical vapor deposition on a tungsten tip was measured in a dual-probe scanning electron microscope (DP-SEM) chamber by introducing Mo tips into the chamber as a measurement probe. The I-V characteristic of well crystallized diamond particle follows Ohm's law, and no field electron emission was observed, while the cauliflower_like particle satisfies the Pool-Frenkel (PF) theory and the field emission was observed clearly. These results are contributed to the defects in CVD diamond. |
| Keywords: | field emission diamond particle I-V characteristic Pool-Frenkel transport |
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