Patent ID: 7858506

Claim:
A method of forming a diode, comprising: forming a first electrode that comprises one or more electrically conductive pedestals extending upwardly from an electrically conductive base; said one or more pedestals having top surfaces, and having sidewall surfaces extending from the base to the top surfaces; depositing one or more layers across the top surface and the sidewall surfaces of the one or more pedestals; forming a second electrode over said one or more layers; wherein the first electrode, one or more layers, and second electrode together form a structure that conducts current between the first and second electrodes when voltage of one polarity is applied to the structure, and that inhibits current flow between the first and second electrodes when voltage having a polarity opposite to said one polarity is applied to the structure; and wherein the forming the first electrode comprises: forming an insulative material across the electrically conductive base; patterning an opening that extends through the insulative material to the electrically conductive base; lining the opening with electrically conductive material; and patterning the lining into at least one of the one or more pedestals.