Evidence for Adsorbate-Enhanced Field Emission from Carbon Nanotube Fibers

Autor:	Murray, P. T., Back, T. C., Cahay, M. M., Fairchild, S. B., Maruyama, B., Lockwood, N. P., Pasquali, M.
Rok vydání:	2013
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Druh dokumentu:	Working Paper
DOI:	10.1063/1.4817516
Popis:	We used residual gas analysis (RGA) to identify the species desorbed during field emission (FE) from a carbon nanotube (CNT) fiber. The RGA data show a sharp threshold for H2 desorption at an external field strength that coincides with a breakpoint in the FE data. A comprehensive model for the gradual transition of FE from adsorbate-enhanced CNTs at low bias to FE from CNTs with reduced H2 adsorbate coverage at high bias is developed which accounts for the gradual desorption of the H2 adsorbates, alignment of the CNTs at the fiber tip, and importance of self-heating effects with applied bias. Comment: 18 pages 3 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1306.6459 Zobrazit plný text záznamu View this record from Arxiv