Field-emission enhancement of Mo-tip field-emitted arrays fabricated by using a redox method |
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| Authors: | Lin CM Chang SJ Yokoyama M I-Nan Lin Chen JF Huang BR |
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| Affiliation: | Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan; |
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| Abstract: | This work has improved the emission characteristics for Mo-tips of field-emitter array (FEA) through a reduction-oxidation (redox) process. The maximum emission current of the 1600 tips array significantly increased from 23.2 /spl mu/A to 2.36 mA with the turn-on voltage decreasing from 70 V to 48 V after the redox treatment. Scanning electron microscopy (SEM) and transmission electron microscopy (TEM) indicate that the main factor improving electron field emission characteristics for the Mo-tips is the increase in enhancement factor (/spl beta/) and, possibly, number of emission sites of Mo films. |
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