Method of making nanotube-based material with enhanced...

Details Method of making nanotube-based material with enhanced... Method of making nanotube-based material with enhanced...

D - Textiles, Paper

01

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D01F 9/12 (2006.01) C30B 33/00 (2006.01) H01J 9/02 (2006.01)

Patent

CA 2450261

A method of reducing electronic work function, reducing threshold field emission values, converting semiconducting behavior to metallic behavior, increasing the electron density state at the Fermi level, and increasing electron emission site density, of nanostructure or nanotube-containing material, the method including: forming openings in the nanotube- containing material; introducing a foreign species such as an alkali metal into at least some of the openings; and closing the openings, thereby forming capsules filled with the foreign species, and forming field emission cathode and flat panel displays using these capsules.

L'invention concerne un procédé destiné à réduire la fonction de travail électronique, à réduire les valeurs d'émission de champ limite, à convertir le comportement semi-conducteur en comportement métallique, à augmenter la densité d'états électronique au niveau de Fermi et à augmenter la densité des sites d'émission électronique dans une nanostructure ou dans un matériau contenant des nanotubes. Ce procédé consiste à introduire une matière étrangère, telle qu'un métal alcalin, dans certaines au moins des ouvertures des nanotubes, à fermer ces ouvertures, d'où la formation de capsules remplies de cette matière étrangère, puis à former une cathode à émission de champ ainsi que des écrans plats au moyen desdites capsules.

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