Low-field electron emission from pinaster-like MoO2 nanoarrays as two-stage emitters

Low-field electron emission is obtained from the pinaster-like MoOfield emission, molybdenum dioxide, enhancement factorProject supported by the National Key Basic Research of China (Grant No 2007CB310500) and the Chinese Ministry of Education (Grant No 705040), the National Natural Science Foundation of China (Grant Nos 90606009, 60571044 and 10774174).7900, 8116, 2110F7/1/2008 12:00:00 AMLow-field electron emission is obtained from the pinaster-like MoO$_{2}$ nanoarrays. The turn-on field of the pinaster-like MoO$_{2}$ nanoarrays is found to be as low as 2.39\,V/$\mu $m with the current density of 10\,$\mu $A/cm$^{2}$. The enhancement factor is extracted to be 3590 from the Fowler--Nordheim plot. These excellent emission properties are attributed to the special structure of the pinaster-like MoO$_{2}$ nanoarrays and confirmed by the calculation in the frame of the two -stage model. Our results show that the pinaster-like MoO$_{2}$ nanoarrays are promising candidate in realizing field emission displays.