Abstract:
A method of forming a semiconductor device with memory cells and logic devices on the same silicon-on-insulator substrate. The method includes providing a substrate that includes silicon, a first insulation layer directly over the silicon, and a silicon layer directly over the first insulation layer. Silicon is epitaxially grown on the silicon layer in a first (memory) area of the substrate and not in a second (logic device) area of the substrate such that the silicon layer is thicker in the first area of the substrate relative to the second area of the substrate. Memory cells are formed in the first area of the substrate, and logic devices are formed in the second area of the substrate.
Abstract:
Methods for semiconductor fabrication include forming (304) a well in a semiconductor substrate. A pocket is formed (306) within the well, the pocket having an opposite doping polarity as the well to provide a p-n junction between the well and the pocket. Defects are created (310) at the p-n junction such that a leakage resistance of the p-n junction is decreased.
Abstract:
In one embodiment, a method of forming an insulating spacer includes providing a base layer, providing an intermediate layer above an upper surface of the base layer, etching a first trench in the intermediate layer, depositing a first insulating material portion within the first trench, depositing a second insulating material portion above an upper surface of the intermediate layer, forming an upper layer above an upper surface of the second insulating material portion, etching a second trench in the upper layer, and depositing a third insulating material portion within the second trench and on the upper surface of the second insulating material portion.
Abstract:
A strained Ge-on-insulator structure is provided, comprising: a silicon substrate (1100), in which an oxide insulating layer (1200) is formed on a surface of the silicon substrate (1100); a Ge layer (1300) formed on the oxide insulating layer (1200), in which a first passivation layer (1400) is formed between the Ge layer (1300) and the oxide insulating layer (1200); a gate stack (1600, 1700) formed on the Ge layer (1300); and a channel region formed below the gate stack (1600, 1700), and a source (1800) and a drain (1800) formed on sides of the channel region, in which the source (1800) and the drain (1800) are a Si x Ge -x :C source and a Si x Ge -x :C drain respectively to produce a tensile 10 strain in the channel region, in which x is within a range from 0 to 1 and a content of C is within a range from 0 to 7.5%. Further, a method for forming the strained Ge-on-insulator structure is also provided.
Abstract translation:提供了一种应变绝缘体上的结构,包括:在硅衬底(1100)的表面上形成氧化物绝缘层(1200)的硅衬底(1100); 形成在氧化物绝缘层(1200)上的Ge层(1300),其中在Ge层(1300)和氧化物绝缘层(1200)之间形成第一钝化层(1400); 形成在所述Ge层(1300)上的栅叠层(1600,1700); 以及形成在所述栅极堆叠(1600,1700)下面的沟道区域,以及形成在所述沟道区域的侧面上的源极(1800)和漏极(1800),所述源极(1800)和所述漏极(1800) Si x Ge-X:C源和Si x Ge-X:C漏极,以在沟道区域中产生拉伸10应变,其中x在0至1的范围内,并且C的含量在范围内 从0%到7.5%。 此外,还提供了用于形成应变的绝缘体上Ge的结构的方法。
Abstract:
A process can be used to achieve the benefits of corner rounding of a semiconductor layer (22) near an edge of a trench field isolation region (22) without having the bird's beak or stress issues that occur with a conventional SOI device. A trench can be partially etched into a semiconductor layer (22), and a liner layer (42) may be formed to help round corners of the second semiconductor layer (22). In one embodiment, the trench can be etched deeper and potentially expose an underlying buried oxide layer (14). Formation of the trench field isolation region can be completed, and electronic components can be formed within the semiconductor layer. An electronic device, such as an integrated circuit, will have a liner layer that extends only partly, but not completely, along a sidewall of the trench. In another embodiment, the process can be extended to other substrates and is not limited only to SOI substrates.
Abstract:
Embodiments disclosed herein include methods in which a pair of openings are formed into semiconductor material, with the openings being spaced from one another by a segment of the semiconductor material. Liners are formed along sidewalls of the openings, and then semiconductor material is isotropically etched from bottoms of the openings to merge the openings and thereby completely undercut the segment of semiconductor material. Embodiments disclosed herein may be utilized in forming SOI constructions, and in forming field effect transistors having transistor gates entirely surrounding channel regions. Embodiments disclosed herein also include semiconductor constructions having transistor gates surrounding channel regions, as well as constructions in which insulative material entirely separates an upper semiconductor material from a lower semiconductor material.
Abstract:
A method for manufacturing a device including an n-type device and a p-type device. In an aspect of the invention, the method involves doping a portion of a semiconductor substrate (200) and forming a gap (219) in the semiconductor substrate (200) by removing at least a portion of the doped portion of the semiconductor substrate (200). The method further involves growing a strain layer (227) in at least a portion of the gap (219) in the semiconductor substrate (200). For the n-type device, the strain layer (227) is grown on at least a portion which is substantially directly under a channel of the n-type device. For the p-type device, the strain layer is grown on at least a portion which is substantially directly under a source region or drain region of the p-type device and not substantially under a channel of the p-type device.
Abstract:
A method of manufacturing an integrated circuit (IC) utilizes a shallow trench isolation (STI) technique. The shallow trench isolation technique is used in strained silicon (SMOS) process. The strained material (36) is formed after the trench (34) is formed. The process can be utilized on a compound semiconductor layer (15) above a buried oxide (Box) layer (14).