Patent ID: 8553741

Claim:
A method of forming a single chip having multiple different devices integrated thereon for a common purpose, the method comprising the steps of: providing a substrate; epitaxially depositing a contact layer with lower and upper differently doped portions on the substrate, the step of epitaxially depositing including one of depositing two portions of differently doped material and doping the contact layer after deposition to provide a lower portion with a first type of doping and an overlying differently doped portion; epitaxially depositing a first insulating layer on the contact layer including one of a single crystal rare earth oxide and a single crystal rare earth silicate; epitaxially depositing a first single crystal layer of semiconductor material on the first insulating layer; epitaxially depositing a second insulating layer on the first single crystal layer, the second insulating layer including one of a single crystal rare earth oxide and a single crystal rare earth silicate; epitaxially depositing a second single crystal layer of semiconductor material on the second insulating layer; defining in the first single crystal layer of doped semiconductor material in conjunction with the second layer of insulating material and the second single crystal layer of doped semiconductor material at least one field effect transistor; defining in the first single crystal layer of doped semiconductor material, the first insulating layer, and the contact layer at least one photonics device; and defining in the first type doped lower portion and the differently doped type overlying portion of the contact layer at least one photodetector.