Patent ID: 11908890
Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 12:
13. A semiconductor device, comprising:
a first vertical transistor comprising a first doping type;
a second vertical transistor stacked on the first vertical transistor, wherein the second vertical transistor comprises a second doping type different from the first doping type;
an isolation layer vertically stacked between source/drain regions of the first and second vertical transistors; and
at least one dielectric layer distinct from the isolation layer, wherein the at least one dielectric layer is disposed on lateral sides of the isolation layer and disposed on the first vertical transistor and the second vertical transistor;
wherein the isolation layer has a greater lateral width than lateral widths of the source/drain regions of the first and second vertical transistors;
wherein an entirety of respective ones of lateral sides of the source/drain regions of the first and second vertical transistors are recessed with respect to the lateral sides of the isolation layer; and
wherein the isolation layer comprises a rare earth oxide.