Abstract:
The present disclosure provides semiconductor devices including a bit line. In some embodiments, a semiconductor device includes a substrate including a plurality of active regions defined by device isolation layers, a plurality of bit lines extending in a first horizontal direction on the substrate, a bit line contact between a first active region of the plurality of active regions and a first bit line of the plurality of bit lines on the first active region, and an active pad on a second active region of the plurality of active regions adjacent to the first active region. The bit line contact includes a first contact layer and a second contact layer on the first contact layer. The active pad is disposed to face the bit line contact.
Abstract:
Provided is a semiconductor device including a peripheral circuit structure including peripheral circuit transistors, bit lines on the peripheral circuit structure and extending in a first horizontal direction, back gate lines extending in a second horizontal direction at a vertical level higher than the bit lines, word lines extending in the second horizontal direction at a vertical level higher than the bit lines and alternating with the back gate lines, a plurality of vertical channel layers in a matrix form on the bit lines, each of the vertical channel layers including a first sidewall extending in a vertical direction and facing a corresponding back gate line, a second sidewall opposite to the first sidewall and facing a corresponding word line, a part of the second sidewall adjacent to a bit line having a curved shape, contact pads on the vertical channel layers, and storage nodes on the contact pads.
Abstract:
A semiconductor device manufacturing method includes loading a semiconductor substrate into a chamber, the semiconductor substrate including a silicon oxide film, depositing a seed layer on the silicon oxide film by supplying a first silicon source material, supplying a purge gas on the seed layer, depositing a protective layer on the seed layer by repeating a first cycle, the first cycle including supplying a base source material layer and subsequently supplying the first silicon source material, and depositing a silicon nitride film on the protective layer by repeating a second cycle, the second cycle including supplying a second silicon source material and subsequently supplying a nitrogen source material.
Abstract:
The present inventive concepts relate to semiconductor devices and methods for fabricating the same, and a semiconductor device according to some example embodiments includes: a substrate including an active region defined by a device isolation layer; a word line that crosses and overlaps the active region; a bit line crossing the active region in a direction different from the word line; a direct contact that connects the active region and the bit line and includes a metallic material; a buried contact connected to the active region; and a bit line spacer between the bit line and the buried contact, wherein a width of the direct contact is different from that of the bit line, and the bit line spacer is on an upper surface of the direct contact.
Abstract:
A semiconductor device and method of forming a semiconductor device is disclosed. The method includes forming a first ion-implanted layer having an amorphous state in a substrate; forming an impurity region of a first conductive type in the substrate; forming a semiconductor pattern on the substrate; forming a first doped region of the first conductive type in the semiconductor pattern; and forming a second doped region of a second conductive type contrary to the first conductive type in the semiconductor pattern. The first ion-implanted layer is formed by implanting carbons ions or germanium ions in the substrate.
Abstract:
A DRAM device includes an isolation region defining source and drain regions in a substrate, a first bit line structure connected to the source region, a second bit line structure disposed on the isolation region, an inner spacer vertically extending on a first sidewall of the first bit line structure, an air gap is between the inner spacer and an outer spacer, a storage contact between the first and second bit line structures and connected to the drain region, a landing pad structure vertically on the storage contact, and a storage structure vertically on the landing pad structure. The sealing layer seals a top of the first air gap. The sealing layer includes a first sealing layer on a first sidewall of a pad isolation trench, and a second sealing layer on a second sidewall of the pad isolation trench and separated from the first sealing layer.
Abstract:
A DRAM device includes an isolation region defining source and drain regions in a substrate, a first bit line structure connected to the source region, a second bit line structure disposed on the isolation region, an inner spacer vertically extending on a first sidewall of the first bit line structure, an air gap is between the inner spacer and an outer spacer, a storage contact between the first and second bit line structures and connected to the drain region, a landing pad structure vertically on the storage contact, and a storage structure vertically on the landing pad structure. The sealing layer seals a top of the first air gap. The sealing layer includes a first sealing layer on a first sidewall of a pad isolation trench, and a second sealing layer on a second sidewall of the pad isolation trench and separated from the first sealing layer.