Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a semiconductor device configured by a gate dielectric layer and an impurity semiconductor formed so as to achieve a small gate leak current or at least a suitable gate leak current. SOLUTION: The manufacturing method of a semiconductor includes a step of providing a substrate, a step of forming a dielectric layer on the substrate, a step of growing an amorphous semiconductor layer on the dielectric layer, a step of doping impurity in the amorphous semiconductor layer, and a step of forming a crystallized layer from the amorphous semiconductor by performing a high-temperature process on the amorphous layer. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
The invention comprises a memory with a storage cell (100) that is formed in a substrate (105) and consists of a trench capacitor (110) and a transistor (160). The trench capacitor (110) is connected to the transistor (160) with a self-aligned connection (220). The transistor (160) at least partially covers said trench capacitor (110). The trench capacitor (110) is filled with a conductive trench filling and an insulating cover layer (135) is located on said conductive trench filling (130). An epitaxy layer (245) is located above said insulating cover layer (135). The transistor (160) is formed in said epitaxy layer (245). The self-aligned connection (220) is formed in a contact trench (205) and consists of an insulation collar (235) into which a conductive material (225) is introduced. A conductive cap (230) is formed on said conductive material.
Abstract:
The invention relates to a method for the production of a semi-conductor structure comprising a plurality of gate stacks (GS1 - GS8) which are arranged on a semi-conductor substrate (1). Said method comprises the following steps: applying the gate-stack (GS1 - GS8) to a gate dielectric (5) via the semi-conductor substrate (1); implanting doping (100, 105, 110, 120, 130; 105''', 110''', 120''', 130''', 140''') which is self-adjusted in relation to the edges of the gate stack (GS1 - GS8); and forming an side wall oxide (40) on the free side walls of the gate stack (GS1 - GS8) while at the same time forming diffused doping areas (100', 110', 120', 130'; 110''', 120''', 130''', 140''') below the gate stack. The invention also relates to said type of semi-conductor structure.
Abstract:
Filling openings in a gate electrode layer on a semiconductor wafer comprises growing a gate oxide layer on the wafer; producing a gate electrode layer on the gate oxide layer; defining opening regions; etching the gate electrode layer up to the gate oxide layer in the opening regions; nitriding the gate oxide layer in the opening regions; and applying a BPSG layer to fill the opening regions. Preferred Features: After exposing the opening regions, an additional oxide layer is thermally produced which is nitrided in a further step. At least one opening region is a source/drain region, in which side wall spacers are exposed in the exposed source/drain region. A source/drain doping is formed in the wafer over the oxide layer in the exposed source/drain region.
Abstract:
Production of a p-channel field effect transistor on a semiconductor substrate (10) comprises doping the substrate with donators using a first implantation to form an n-doped sink (70), thermally oxidizing to form a thin oxide layer (30) on the surface of the substrate, depositing a first layer (40) made from an n-doped polysilicon, p-doping the first layer with boron or boron fluoride particles, lithographically projecting and etching to remove the first layer, doping the substrate with acceptors using a second implantation (140) to form a p-doped source region, and subjecting the substrate to an elevated temperature. Preferred Features: The step of p-doping the first layer with boron or boron fluoride is carried whilst the first layer is deposited. The first layer is p-doped using a third implantation after depositing the fist layer.
Abstract:
Gate stacks (GS1-4) are applied to a gate dielectric (11) over the semiconductor substrate (10). A sidewall oxide (17) is formed on the gate stacks. A mask (12) is applied to the semiconductor structure, and is then structured. A contact doping (13) is implanted and self-adjusts to the sidewall oxide of the gate stack (GS1, GS2), in regions not covered by the mask
Abstract:
Production of a semiconductor structure comprises applying gate stacks (GS1-GS8) onto a gate dielectric (5) over a semiconductor substrate (1), implanting a dopant (100) which is self-adjusting to the edges of the gate stack, and forming a side wall oxide (40) on exposed side walls of the gate stack with simultaneous formation of diffused doping regions (100', 110', 120', 130') under the gate edge. An Independent claim is also included for a semiconductor structure produced by the above process.
Abstract:
A memory having a memory cell formed in a substrate and including a trench capacitor and a transistor and a method for producing the memory includes connecting the trench capacitor to the transistor with a self-aligned connection. The transistor at least partly covers the trench capacitor. The trench capacitor is filled with a conductive trench filling and an insulating covering layer is situated on the conductive trench filling. An epitaxial layer is situated above the insulating covering layer. The transistor is formed in the epitaxial layer. The self-aligned connection is formed in a contact trench and includes an insulation collar in which a conductive material is introduced. A conductive cap is formed on the conductive material.
Abstract:
A process is described which allows a buried, retrograde doping profile or a delta doping to be produced in a relatively simple and inexpensive way. The process uses individual process steps that are already used in the mass production of integrated circuits and accordingly can be configured for a high throughput.