Patent ID: 9129896
Filing Date: 2015-09-08
Classification: H01L

Abstract:
1. A method of forming a plurality of conductive lines buried in silicon-comprising semiconductor material, comprising: providing n-type dopant into a buried volume of silicon-comprising semiconductor material at a concentration sufficient to ultimately render silicon-comprising semiconductor material within which the dopant is received electrically conductive, the buried n-type conductively-doped volume comprising conductively-doped n-type regions that are laterally spaced in at least one cross-section, n-type dopant in the laterally-spaced n-type regions being at least one of As and Sb; providing a conductivity-neutral dopant in the buried volume of silicon-comprising semiconductor material, the conductivity-neutral dopant providing greater diffusion of the at least one of As and Sb in the silicon-comprising semiconductor material than would otherwise occur under a set of heating conditions in the absence of the conductivity-neutral dopant under the set of heating conditions; and subjecting the buried volume of silicon-comprising semiconductor material to the set of heating conditions to cause the laterally-spaced n-type regions to interconnect and forming individual conductive lines of the plurality of conductive lines from the laterally interconnected conductively-doped n-type regions.