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首页> 外文期刊>Journal of Physics, D. Applied Physics: A Europhysics Journal >Synthesis of octahedral ZnGa2O4 particles and their field-emission properties
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Synthesis of octahedral ZnGa2O4 particles and their field-emission properties

机译：八面体ZnGa2O4颗粒的合成及其场致发射特性

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摘要

ZnGa2O4 particles that are regular octahedra in shape and uniform in size were synthesized on Si substrates via catalyst-free chemical vapour deposition. The surfaces of the octahedra are bounded by {1 1 1} facets. A model based on surface energy dependent growth rate is proposed for interpreting the appearance of the octahedra. The field-emission (FE) properties of the octahedral particles were measured. The turn-on field required for producing an emission current density of 0.1 mu Acm(-2) is 11V mu m(-1), and the field enhancement factor (beta) is about 1256, which is high enough for various FE applications.
机译：通过无催化剂的化学气相沉积法，在硅基板上合成了规则八面体形状和尺寸均匀的ZnGa2O4颗粒。八面体的表面由{1 1 1}面界定。提出了一种基于表面能依赖性生长速率的模型来解释八面体的外观。测量八面体粒子的场发射（FE）特性。产生0.1μAcm（-2）的发射电流密度所需的导通场为11Vμm（-1），场增强因子（beta）约为1256，对于各种有限元应用而言足够高。

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