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We report here a systematic study of the field emission (FE) properties of highly ordered carbon nanotube (CNT) arrays at different temperatures. The FE characteristics of the CNT arrays are significantly improved with temperature increasing from 298K to 473K, as evidenced by the decreases of turn-on electric field at 10μA/cm 2 from 1.064 to 0.774V/μm and threshold field at 10mA/cm 2 ...
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