科研之友
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摘要
A field-emission cathode is fabricated with ZnO tetrapodlike nanoemitters. With a simple planar triode structure, a cathodoluminescent light source has been investigated. Because of the characteristics of surface-conduction electron-emission planar triode, this cathodoluminescent light source shows a very good performance. As experimental results show, the turn-on electric field is about 1V/mu m, whereas the current density is 1 mu A/cm(2). The threshold electric field is 1.6 V/mu m, whereas the current density is 1 mA/cm(2). When a pulse voltage with 4% duty cycle is applied on the gate electrode, the fluctuation of anode current is smaller than 15% during 200 h.
- 出版日期2008-5
- 单位江苏省疾病预防控制中心; 东南大学
