Semiconductor devices and fabrication methods thereof are provided. The semiconductor devices include: a substrate, the substrate including a p-type well adjoining an n-type well; a first p-type region and a first n-type region disposed within the n-type well of the substrate, where the first p-type region at least partially encircles the first n-type region; and a second p-type region and a second n-type region disposed in the p-type well of the substrate, where the second n-type region at least partially encircles the second p-type region. In one embodiment, the first p-type region fully encircles the first n-type region and the second n-type region fully encircles the second p-type region. In another embodiment, the semiconductor device may be a bipolar junction transistor or a rectifier.

A complementary bipolar junction transistor (BJT) integrated structure and methods for fabricating and operating such. The structure includes a monolithic substrate and conductive first and second backplates electrically isolated from each other. An NPN lateral BJT is superposed over the first backplate, and a PNP lateral BJT is superposed over the second backplate. A buried oxide (BOX) layer is positioned between the NPN lateral BJT and the first backplate, and between the PNP lateral BJT and the second backplate.

A semiconductor device includes a first device including first active regions and first to third structures thereon, and a second device including a second active region, a gate structure intersecting the second active region, and a source/drain region including a lower source/drain region on the second active region having first-type conductivity, an inter-source/drain region insulating layer on the lower source/drain region, and an upper source/drain region on the inter-source/drain region insulating layer and having second-type conductivity. The first structure includes first lower and upper impurity regions. The second structure includes a second lower impurity region having the first-type conductivity, an inter-impurity region insulating layer, and a second upper impurity region having the second-type conductivity. The third structure includes third lower and upper impurity regions having the second-type conductivity, the third upper impurity region having an impurity concentration higher than a that of the third lower impurity region.

The present disclosure relates to semiconductor structures and, more particularly, to a lateral bipolar transistor and methods of manufacture. The structure includes: an extrinsic base having at least one sidewall with a gradient concentration of semiconductor material; an emitter on a first side of the extrinsic base; and a collector on a second side of the extrinsic base.

The present disclosure relates to semiconductor structures and, more particularly, to electrostatic devices and methods of manufacture. The structure includes: a device having a collector region, an emitter region, and a base region; an oxidation structure within the base region; and an isolation structure abutting the oxidation structure and extending between the base region and the emitter region.

An electronic device includes an NPN bipolar transistor in an isolation tank region of an n-type semiconductor layer and having a p-type base region, an n-type emitter region, and an n-type collector region and a PNP bipolar transistor in the isolation tank region of the semiconductor layer and having an n-type base formed by a portion of the n-type semiconductor layer, a p-type emitter formed by a portion of the p-type base region of the NPN bipolar transistor, and a p-type collector formed by a p-type second collector region in the isolation tank region of the semiconductor layer and spaced apart from the p-type base region and from the n-type collector region of the NPN bipolar transistor.

A BJT device includes a substrate of first conductive type; a first ion well of second conductive type located in the substrate; a second ion well of first conductive type located in the first ion well; an emitter region of second conductive type located in the second ion well; a first trench isolation region surrounding the emitter region; a base region of first conductivity type located in the second ion well; a second trench isolation region surrounding the base region; a third ion well of second conductivity type located in the first ion well and surrounding the second ion well; and a collector region of second conductivity type located in the third ion well and surrounding the second trench isolation region. The junction depth of the emitter region is deeper than the junction depth of the base region or the junction depth of the collector region.

A semiconductor device includes a first device including first active regions and first to third structures thereon, and a second device including a second active region, a gate structure intersecting the second active region, and a source/drain region including a lower source/drain region on the second active region having first-type conductivity, an inter-source/drain region insulating layer on the lower source/drain region, and an upper source/drain region on the inter-source/drain region insulating layer and having second-type conductivity. The first structure includes first lower and upper impurity regions. The second structure includes a second lower impurity region having the first-type conductivity, an inter-impurity region insulating layer, and a second upper impurity region having the second-type conductivity. The third structure includes third lower and upper impurity regions having the second-type conductivity, the third upper impurity region having an impurity concentration higher than a that of the third lower impurity region.

A method of manufacturing an integrated circuit includes forming first and second false collector regions of a first conductivity type adjacent to a surface of an epitaxial layer of semiconductor material. The first false collector region is located laterally on a first side of a base region. The base region is formed within the epitaxial layer and has a second conductivity type. The second false collector region is located laterally on a second side of the base region. The second side is opposite the first side of the base region. The base region is a base of a parasitic bipolar junction in an isolation region of an active semiconductor device.

In accordance with various embodiments, a method for fabricating a device is provided. The method includes providing a semiconductor layer-stack having one or more layers and a high resistivity substrate layer; implanting a first dopant to form a first region; etching one or more vias through the one or more layers and into a top portion of the high resistivity substrate layer; implanting a second dopant to form one or more second regions; and implanting the first dopant to form one or more third regions. The method also includes depositing a metal in the vias to form one or more metal contacts, thereby forming a diode or a bipolar junction transistor. Either the second or third regions can include a floating region to improve the transistor performance. The transistor can be a PNP or a NPN bipolar junction transistor, depending on the dopants.