Patent ID: 6180444
Filing Date: 2001-01-30
Classification: H01L

Abstract:
A method of producing a semiconductor device comprising an ultra-thin junction diode, comprising steps of:depositing and patterning a metal line;depositing on said metal line a first layer of amorphous Si, said first layer being doped with a first-type dopant and depositing on said first layer a second layer of intrinsic amorphous Si in a vacuum;etching said first and second layers into mesa structures;covering sidewalls of said mesa structures with an insulator layer;converting said mesa structures to poly--Si;implanting ions of a second-type dopant into said second layer;heating said mesa structures to incorporate the second-type dopant into said second layer;removing the insulator layer from a top surface of the semiconductor device; anddepositing a metal layer on said top surface, wherein said poly-Si has a grain size greater than or equal to an area of said diode wherein said area of said diode is a square width of said metal line.