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主要讨论了触发电场的脉宽和阴极几何参数对铁电二极管电子发射的影响,通过对不同脉宽激励下的电子发射试验发现触发脉冲的最佳工作宽度范围是150-250ns。对不同几何参数铁电阴极片在正脉冲激励下的电子发射研究指出:一般实验条件下(触发电压小于4kV/mm),触发梯度电场相同时,阴极越厚,条栅电极越细密,发射电流密度越大;极化反转发射中前沿发射方式和后沿发射方式可以共时存在。
The influence of the triggering electric field pulse width and the cathode geometry on the electron emission of the ferroelectric diode is mainly discussed. The optimum working width of the trigger pulse is 150-250ns by electron emission test under different pulse widths. Electron emission of ferroelectric cathode films with different geometric parameters under positive pulse excitation shows that under the general experimental conditions (trigger voltage less than 4kV / mm), when the gradient electric field is triggered to be the same, the thicker the cathode, the finer the gate electrode and the emission current The greater the density. The front-end transmitting mode and the rear-end transmitting mode in polarized reverse transmitting can exist in time.