Thick film semiconducting inks

摘要

A method of producing a printable composition comprises mixing a quantity of particulate semiconductor material with a quantity of a binder. The semiconductor material is typically nanoparticulate silicon with a particle size in the range from 5 nanometers to 10 microns. The binder is a self-polymerizing material comprising a natural oil, or a derivative or synthetic analog thereof. Preferably the binder comprises a natural polymer formed by auto-polymerization of a precursor consisting of a natural oil, or its derivatives including pure unsaturated fatty acids, mono- and di-glycerides, or methyl and ethyl esters of the corresponding fatty acids. The method may include applying the printable composition to a substrate, in single or multiple layers, and allowing the printable composition to cure to define the component or conductor on the substrate.

主权项

1. A method of producing a printable semiconducting ink, comprising mixing a quantity of silicon particles with a quantity of a binder, wherein the silicon particles have a particle size in the range of 5 nanometers to 10 microns and have a semiconducting functionality; wherein the binder is a self-polymerising material comprising a natural oil, or a derivative or synthetic analogue thereof; and wherein the volume ratio of the silicon particles to the binder is greater than 50%, to produce an ink with semiconducting properties.