Development of a ferroelectric cathode diode

• Published in: Chinese physics C Vol. 34; no. 8; pp. 1127 - 1131
• Main Author: 李若云 郑曙昕 唐传祥
• Format: Journal Article
• Language: English
• Published: IOP Publishing 01.08.2010; Department of Engineering Physics, Tsinghua University, Beijing 100084, China
• Subjects: FEC; PIC模拟; 二极管; 清华大学; 电流密度分布; 铁电阴极; 高电流密度; plasma; FEC; high current density diode
• ISSN: 1674-1137; 0254-3052; 2058-6132
• DOI: 10.1088/1674-1137/34/8/017

As a promising kind of high current cold cathode, the Ferroelectric Cathode （FEC） has several significant advantages, such as a controllable trigger time, lower vacuum requirement and large emitting area fabricability. The emitting current density of the FEC fabricated at Tsinghua University was more than 200 A/cm^2. In order to make the ferroelectric cathode into practical applications, a high current density diode using a ferroelectric cathode was designed, based on the PIC simulation. The performance of the FEC diode was investigated experimentally. When the applied diode voltage was 60 kV, a current density of more than 250 A/cm^2 was obtained, and the current density distribution was also measured.