2003
DOI: 10.1116/1.1587136
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Field emission from screen-printed carbon nanotubes irradiated by tunable ultraviolet laser in different atmospheres

Abstract: A tunable ultraviolet (UV) laser was used to irradiate the screen-printed carbon nanotube (CNT) samples in air and in high vacuum. UV laser lights with wavelengths of 349 and 266 nm from a tunable laser were used with average energy densities of 20.3, 10.2, and 2.25 mJ/cm2, respectively, with different irradiation times. The field emission characteristics of the CNT cathodes irradiated in air were drastically improved, whereas those of the samples irradiated in vacuum were slightly improved. Irradiation by a 2… Show more

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Cited by 57 publications
(30 citation statements)
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“…To overcome the issue, several posttreatment methods for the printed CNTs cathode have been developed, including surface rubbing technique, 1 adhesive tape technique, 8 ion irradiation, 10,11 plasma etching, 9 and laser irradiation. 12 These methods are effective in improving the field emission characteristics of CNTs cathodes. However, in surface rubbing and adhesive tape techniques, particles impurity or contamination can be brought into the CNTs cathode, which can give rise to emission degradation or arc events between the electrodes.…”
Section: Introductionmentioning
confidence: 99%
“…To overcome the issue, several posttreatment methods for the printed CNTs cathode have been developed, including surface rubbing technique, 1 adhesive tape technique, 8 ion irradiation, 10,11 plasma etching, 9 and laser irradiation. 12 These methods are effective in improving the field emission characteristics of CNTs cathodes. However, in surface rubbing and adhesive tape techniques, particles impurity or contamination can be brought into the CNTs cathode, which can give rise to emission degradation or arc events between the electrodes.…”
Section: Introductionmentioning
confidence: 99%
“…There are many techniques for improving emission reproducibility of a CNT film including controlled growth [10], mechanical polishing [11], chemical treatment [12], plasma treatment [13,14] and laser treatment [15]. However, these investigations are insufficient and the results are quite discrete.…”
Section: Introductionmentioning
confidence: 99%
“…Advanced applications of CNTs include chemical sensors,(7) nanoelectronic devices, (28) and field-emission devices. (29) In a field-emission experiment performed by Zhao et al, (30) after UV or infrared light irradiation, as-grown CNTs sample showed an enhancement of emitted current and the decrease of its turn-on electric field. The possible reasons for the improved emission performance were attributed to the C-C bond breaking, structural damage, surface cleaning, or thermal effect.…”
Section: Cnts Fabricationmentioning
confidence: 99%