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首页> 外文期刊>Applied Surface Science >Enhanced Field Emission From Zno Nanopencils By Using Pyramidal Si(1 0 0) Substrates
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Enhanced Field Emission From Zno Nanopencils By Using Pyramidal Si(1 0 0) Substrates

机译：通过使用金字塔形Si（1 0 0）衬底增强Zno Nanopencils的场发射

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摘要

Zinc oxide nanopencil arrays were synthesized on pyramidal Si(1 0 0) substrates via a simple thermal evaporation method. Their field emission properties have been investigated: the turn-on electric field (at the current density of 10 μA/cm~2) was about 3.8 V/μm, and the threshold electric field (at the current density of 1 mA/cm~2) was 5.8 V/μm. Compared with similar structures grown on flat Si substrates, which were made as references, the pyramidal Si-based ZnO nanopencil arrays appeared to be superior in field emission performance, thus the importance of the non-flat substrates has been accentuated. The pyramidal Si substrates could not only suppress the field screening effect but also improve the field enhancement effect during the field emission process. These findings indicated that using non-flat substrates is an efficient strategy to improve the field emission properties.
机译：通过简单的热蒸发方法在金字塔形Si（1 0 0）衬底上合成了氧化锌纳米铅笔阵列。研究了它们的场发射特性：开启电场（电流密度为10μA/ cm〜2时）约为3.8 V /μm，阈值电场（电流密度为1 mA / cm〜 2）为5.8V /μm。与作为参考的在扁平硅衬底上生长的类似结构相比，金字塔形的硅基ZnO纳米铅笔阵列在场发射性能上似乎更好，因此非平面衬底的重要性得到了强调。金字塔形硅衬底不仅可以抑制场屏蔽效应，而且可以提高场发射过程中的场增强效应。这些发现表明，使用非平坦衬底是改善场发射特性的有效策略。

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