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Field-emission enhancement from change of printed carbon nanotube morphology by an elastomer
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color online) Schematic diagrams showing the surface treatment method of screen-printed CNT films by (a) adhesive taping, (b) PDMS elastomer, and (c) PDMS elastomer of the triode-type structure with a top gate.

Image of FIG. 2.
FIG. 2.

(Color online) SEM images of the printed CNT film and a line profile of the AFM image: (a) as-deposited CNT film and (b) PDMS layer detached from the cathode. The inset shows a process of the PDMS layer detachment from the cathode surface, (c) inhomogeneous surface of the CNT film treated by the PDMS elastomer, (d) cross-sectional SEM image showing the optimal surface morphology after PDMS elastomer treatment, (e) AFM image of the surface of the screen-printed CNT film.

Image of FIG. 3.
FIG. 3.

(Color online) Curves of the current versus voltage and the corresponding emission images (active area of ) from the screen-printed CNT film after and before surface treatment: (a) measured curves. The inset in (a) shows that few pixels emit electrons in the as-deposited CNT film, (b) and (c) phosphor screen images after the surface treatment (at the anode voltage of and ).

Image of FIG. 4.
FIG. 4.

(Color online) (a) Schematic diagram of the triode-type structure prepared for PDMS treatment, (b) PDMS layer detached from the cathode, (c) emission image of a triode structure panel using the green phosphor anode plate, (d) curves of the gate current vs the anode current with time at a fixed voltage.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Field-emission enhancement from change of printed carbon nanotube morphology by an elastomer