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To study the mechanism of current degradation of a cold cathode, the outgassing measurement of a field emission diode with screen-printed CNTs cathode has been taken with a quadrupole mass spectrometer (QMS) in an ultra-high vacuum (UHV) system. It was found that the H2, CO2, and CO were outgassed from the diode during the working process. The field emission properties of the cold cathode, such as...
To study the mechanism of current degradation of a cold cathode, the outgassing measurement of a field emission diode with tetrapod zinc oxide (ZnO) cathode has been taken with a quadrupole mass spectrometer (QMS) in an ultra‐high vacuum (UHV) system. It was found that the H2, CO2, CO, and CH4 were outgassed from the diode during the working process. The partial pressure of outgassing increases with...
In this work outgassing characteristics of a screen-printed ZnO cathode during the field emission process are studied and plausible outgassing effects on the field emission property of the ZnO cathode are proposed.
We report the fabrication process of injector-like ZnO nanostructures and their excellent field emission properties. Injector-like Zinc oxide (ZnO) nanostructures were synthesized on a Si (001) substrate with ~5 nm thick gold film by direct thermal evaporation of Zinc power under a low temperature of 600 degC and normal pressure. Field emission scanning electron microscopy (FESEM), x-ray diffraction...
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