Patent ID: 8481394

Claim:
A method of forming a memory cell, the method comprising the following steps performed in order: (a) forming a layer of dielectric material above a substrate; (b) forming an opening in the dielectric layer; (c) forming a carbon-based switching material layer within the opening by: (i) depositing a solution that includes a carbon-based switching material on the substrate; (ii) rotating the substrate to cause the solution to flow into the opening; (iii) annealing the substrate at a temperature between 100° C. and 500° C. for up to five minutes; (iv) after step (iii), cooling the substrate to a temperature between 20° C. to 30° C.; and (v) repeatedly performing steps (i) through (iv) until a desired thickness of carbon-based switching material remains in the opening; and (d) forming a memory element using the carbon-based switching material layer.