Patent ID: 11889768
Assignee: FERDINAND-BRAUN-INSTITUT GGMBH, LEIBNIZ-INSTITUT FÜR HÖCHSTFREQUENZTECHNIK
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 1:
2. The transistor structure according to the generic term of claim 1, characterized in that
f) the transistor structure further comprises an intermediate layer (230), wherein the intermediate layer (230) is developed between the contact element (240) and the passivation layer (220);
g) at least one layer (120, 220, 150, 250, 230) disposed above the active layer (112, 212) is tensile stressed or compressively stressed in the area around the contact element (140, 240) with a normal tension of |σ|>200 MPa;
h) wherein via the individual stresses in the area around the contact element (140, 240), a resulting force on the boundary area between the passivation layer (120, 220) and the active layer (112, 212) is set, which influences via the piezoelectric effect the electron density in the active layer (112, 212) in the area below the contact element (140, 240), wherein the normal tensions of stressed layers lie in the range of between ±4 GPa.