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Issue 30, 2015
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Experimental and theoretical investigation of enhanced cold cathode emission by plasma-etched 3d array of nanotips derived from CuPc nanotube

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Abstract

In the present work, we report fabrication and field emission responses of 3D copper phthalocyanine (CuPc) nanotip arrays synthesized over nanotube walls by facile plasma treatment. Significant field emission enhancement is confirmed for a nanotip–nanotube hybrid system (turn-on field 4.2 V μm−1@10 μA cm−2) as compared to pristine CuPc nanotubes (turn-on field 6.8 V μm−1@10 μA cm−2). Root of the observed enhanced cold cathode emission performances is further probed by a finite element method based simulation protocol that computed local electric field distribution for a single tube without and with plasma etching in a manner parallel to the experimental setup. Our obtained results strongly suggest that CuPc nanotip–nanotube hybrid nanostructures are a major potential candidate as field emitters for vacuum nanoelectronics and cold cathode based emission display applications.

Graphical abstract: Experimental and theoretical investigation of enhanced cold cathode emission by plasma-etched 3d array of nanotips derived from CuPc nanotube

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The article was received on 26 Sep 2014, accepted on 09 Feb 2015 and first published on 09 Feb 2015


Article type: Paper
DOI: 10.1039/C4RA11298A
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Citation: RSC Adv., 2015,5, 23847-23854
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    Experimental and theoretical investigation of enhanced cold cathode emission by plasma-etched 3d array of nanotips derived from CuPc nanotube

    U. Kumar Ghorai, S. Saha, N. Mazumder, N. S. Das, D. Banerjee, D. Sen and K. K. Chattopadhyay, RSC Adv., 2015, 5, 23847
    DOI: 10.1039/C4RA11298A

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