Realization of low power-laser induced thermionic emission from Ag nanoparticle-decorated CNT forest: A consequence of surface plasmon resonance

Enhancement ofelectron emission fromAgnanoparticle-decoratedcarbon nanotube(CNT) forest, using low power-lasers, is reported in this work. Realization ofthermionic emission fromCNTs using the low power laser can be achievable when theCNT forest is illuminated by a narrowlaser beam which leads to localized heating of theCNT forest surface. For this purpose,CNT forest was decorated withAgnanoparticles.Surface plasmon resonance ofAgnano-particles led to intense local electric field which is responsible for localized heating andthermionic emission fromCNTs. Enhancement of emission current fromCNTs depends on the wavelength of the excitation laser, so that matching the wavelength of laser to the wavelength of the plasmon resonance leaded to a maximum enhancement inelectron emission.

Source: Applied Physics Letters - November 14, 2016 Category: Physics Authors: Mahta Monshipouri, Yaser Abdi and Sara Darbari Source Type: research