Large-current-field emitting diode with adjustable threshold voltage and processing method thereof
A technology of threshold voltage and field emission, which is applied in the manufacture of electrode systems, manufacture of discharge tubes/lamps, components of discharge tubes/lamps, etc., can solve the problems of small emission current, non-adjustable threshold voltage, versatility of field emission diodes and Problems such as reduced range of use
Active Publication Date: 2021-11-19
CHONGQING UNIV
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Problems solved by technology
[0004] Field emission diodes have attracted people's attention because of their small size, low power consumption, and the excellent characteristics of vacuum electronic devices such as fast speed, high frequency, high temperature resistance, and radiation resistance. However, the threshold value of various types of field emission diodes is currently The voltage is not adjustable and the emission current is small, which makes the versatility and application range of field emission diodes smaller
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[0046] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0047] as attached figure 1 And attached figure 2 As shown, a large current field emission diode with adjustable threshold voltage includes a bottom glass layer 1 and a cone emitter 2 that can be close to or far away from each other. The cathode electrode 3, the anode electrode 4 and the control electrode 5, the cathode electrode 3 is connected with the cone emitter 2, the bottom glass layer 1 and the cone emitter 2 are close to each other when the control voltage of the control electrode 5 becomes large, and the control electrode The control voltage of 5 becomes smaller and moves away from each other.
[0048] The working principle of the present invention is: when the threshold voltage of the field emission diode needs to be adjusted, a control voltage is applied on the control electrode 5, and when the control voltage applied on the control electr...
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The invention discloses a large-current-field emitting diode with adjustable threshold voltage and a processing method thereof. The large-current-field emitting diode comprises a bottom glass layer and a conical tip emitter which can be close to or far away from each other, wherein a cathode electrode, an anode electrode and a control electrode are arranged on the end face, facing the conical tip emitter, of the bottom glass layer, the cathode electrode is connected with the conical tip emitter, and the bottom glass layer and the conical tip emitter get close to each other when the control voltage of the control electrode becomes large and get away from each other when the control voltage of the control electrode becomes small. According to the large-current-field emitting diode, the threshold voltage of the field emission diode can be increased or decreased by adjusting the size of the control voltage on the control electrode, so that the threshold voltage of the field emission diode can be conveniently adjusted, and the universality and the application range of the field emission diode are improved.
Description
technical field [0001] The invention relates to the technical field of power electronics, in particular to a high-current field emission diode with an adjustable threshold voltage and a processing method thereof. Background technique [0002] Field emission refers to the phenomenon that electrons are released from the surface of the cathode under the action of a strong electric field, which belongs to cold cathode emission; the free electrons in the metal need to do a certain amount of work to escape from the metal, which is called the work function of the metal , so usually free electrons move in a certain electronic potential well in a metal conductor; when a metal is used as a cathode and a certain voltage is applied between the anodes, a certain potential barrier is formed on the surface of the cathode; when the applied voltage is large, the barrier width decreases , free electrons can be released from the metal through the quantum effect of potential barrier penetration...
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IPC IPC(8): H01J1/304H01J9/02
CPCH01J1/3044H01J9/025
Inventor 刘海涛江佳胡贝妮宋凌辉屈安登王宇萧
Owner CHONGQING UNIV