Highly reliable CNT emitters with high thermo-stability based on paste technology

Since the discovery of CNT, a great deal of attention has been focused on the applicable possibilities. But, there are several problems with the thermal degradation after vacuum packaging process. So, in this study, we have developed a high thermo-stable CNT emitter with high FE performance by optimization of CNT paste composition. The developed CNT emitters with self gettering effect were observed to maintain the FE properties after the high-temperature process both in air(at 500 °C) and in vacuum (at 1,000 °C), showing a very high emission current density of over 30 mA/cm² at an applied field of 2.1 V/µm. Also, the SEM images of the align CNT emitter shows the good surface morphology in terms of the adhesion and uniformity‥