Interface-controlled Ag ₂ O–Si wafer heterojunctions showing current rectification and light-responsive conductivity

O octahedron/Si {100} wafer, cube/Si {111} wafer, and rhombic dodecahedron/Si {111} wafer combinations showed significant photocurrent enhancement for photodetector applications. Thus, by controlling the contacting crystal faces in semiconductor heterojunctions, it is possible to utilize the semiconductor facet effects to fabricate novel transistors, especially if the top semiconductor can be produced by a solution approach for incorporating into the chip manufacturing process.