进行了锆钛酸铅反铁电体和铁电体的电子发射对比实验,研究了抽取电压、电极绝缘保护层和相变特性等对反铁电体电子发射性能的影响.通过涂覆绝缘保护层,大幅提高了表面击穿阈值,从而提高了施加场强;通过施加抽取电压,提高了发射电流密度.两种方式均使电流发射密度得到提高,最高达到153 A/cm2.利用相变理论,得到反铁电体相变时的强扩散和表面的半导性使局部或表面相变温度下降, 相变温度的下降有助于电子发射,合理解释了观察到的反铁电体中发射电流密度比铁电体更高和电子发射起始阈值更低的现象.
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