Patent ID: 8193594

Claim:
An electronic device comprising: a substrate; a plurality of two-terminal switching devices disposed on the substrate, wherein each two-terminal switching device comprises: a first electrode comprising a layer of first conductive material, having a first work function; a layer of a broad band semiconducting material physically separate from the layers of semiconducting material on other of the two-terminal switching devices, wherein the band gap of the broad band semiconductor is at least about 2.5 eV and the carrier concentration in the broad band semiconductor is less than about 10 18 cm −3 ; and a second electrode comprising a layer of a second conductive material, having a second work function, wherein the second conductive material comprises a material having a p+ or p++ type conductivity; wherein at least a portion of the semiconductor layer resides between the first and second conductive materials, wherein the second work function magnitude is greater than the first work function magnitude.