Figure 9From: Synthesis and Enhanced Field-Emission of Thin-Walled, Open-Ended, and Well-Aligned N-Doped Carbon NanotubesField-emission current (J) versus applied electric field (E) characteristics of thin-walled open-ended aligned N-doped CNTs grown at three different temperatures and the inset is the corresponding Fowler–Nordheim plots of different samplesBack to article page