Fabrication of Electrically Active Films Based on Multiple Layers
AssigneeNanoco Technologies Ltd.
InventorsJames Harris, Nigel Pickett
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Abstract
A continuous film of desired electrical characteristics is obtained by successively printing and annealing two or more dispersions of prefabricated nanoparticles.
Claims21
A method of fabricating a film, the method comprising the steps of:
- a. providing a substrate and a plurality of flowable printing compositions each comprising a different dispersion of prefabricated nanoparticles of specific elemental composition and having an average size no greater than 100 nm;
- b. printing a layer of one of the printing compositions onto the substrate;
- c. annealing the printed layer to form a continuous film;
- and
- d. repeating steps (b) and (c) with another or the same printing composition to form the film.
A flowable printing composition comprising a carrier and a dispersion of nanoparticles therein, the nanoparticles comprising first and second components, the first component comprising at least one of Cu or Ag, and the second component comprising at least one of Se, Te, or S, the composition having a viscosity substantially independent of flow rate.
A flowable printing composition comprising a carrier and a dispersion of nanoparticles therein, the nanoparticles each comprising first, second, and third components, the first component comprising at least one of Cu or Ag, the second component comprising at least one of Se, Te, or S, and the third component comprising at least one of In, Ga, or Al, the composition having a viscosity substantially independent of flow rate.
Dependencies are inferred from the claim text.