METHOD OF FABRICATING SEMICONDUCTOR DEVICES USING A TWO-STEP GAP-FILL PROCESS

    公开(公告)号:US20210050522A1

    公开(公告)日:2021-02-18

    申请号:US16746258

    申请日:2020-01-17

    Abstract: A method of fabricating a memory device includes forming word lines and cell stacks with gaps between the cell stacks, forming a lower gap-fill insulator in the gaps, forming an upper gap-fill insulator on the lower gap-fill insulator, curing the lower gap-fill insulator and the upper gap-fill insulator to form a gap-fill insulator, and forming bit lines on the cell stacks and the gap-fill insulator. The lower gap-fill process may be performed using a first source gas that includes first and second precursors, and the upper gap-fill process may be performed using a second source gas that includes the first and second precursors, a volume ratio of the first precursor to the second precursor in the first source gas may be greater than 15:1, and a volume ratio of the first precursor to the second precursor in the second source gas may be less than 15:1.

    SEMICONDUCTOR DEVICE AND METHOD OF FORMING THE SAME

    公开(公告)号:US20210151506A1

    公开(公告)日:2021-05-20

    申请号:US17032571

    申请日:2020-09-25

    Abstract: A semiconductor device and a method of forming the same are provided. The semiconductor device including a first conductive line on a substrate, memory cell structures stacked on the first conductive line, a second conductive line between the memory cell structures; and a third conductive line on the memory cell structures may be provided. Each of the plurality of memory cell structures includes a data storage material pattern, a switching material pattern, and a plurality of electrode patterns, at least one of the electrode patterns includes at least one of carbon material layer or a carbon-containing material layer, and the at least one of the electrode patterns includes a first region doped with a nitrogen and a second region that is not doped with the nitrogen, or is doped with the nitrogen at a first concentration lower than a second concentration of the nitrogen in the first region.

    SEMICONDUCTOR DEVICES AND DATA STORAGE SYSTEMS INCLUDING THE SAME

    公开(公告)号:US20240373635A1

    公开(公告)日:2024-11-07

    申请号:US18587785

    申请日:2024-02-26

    Abstract: A semiconductor device includes a plate layer, gate electrodes on the plate layer, interlayer insulating layers that are alternately stacked with the gate electrodes, and channel structure that extends into the gate electrodes, where the channel structure includes a channel filling layer, a channel layer that at least partially surrounds the channel filling layer, charge storage layers between the gate electrodes and the channel layer, a first dielectric layer between the gate electrodes and the charge storage layers, and a second dielectric layer between the channel layer and the charge storage layers, where the channel layer includes first convex portions that extend toward the channel filling layer from a side surface of the channel layer that contacts the channel filling layer, and where vertices of the first convex portions are at first levels in the first direction that are between each level of a pair of adjacent gate electrodes.

    SEMICONDUCTOR DEVICES AND METHODS OF MANUFACTURING SEMICONDUCTOR DEVICES

    公开(公告)号:US20230123932A1

    公开(公告)日:2023-04-20

    申请号:US17959365

    申请日:2022-10-04

    Abstract: A method of manufacturing a semiconductor device includes forming a molded structure of stacked and alternating interlayer insulating layers and sacrificial layers on a lower structure, forming a hole through the molded structure, forming recess regions in the sacrificial layers of the molded structure, respectively, by removing a portion of the sacrificial layers, exposed through the hole, from side surfaces of the sacrificial layers, sequentially forming a preliminary blocking pattern and a charge storage pattern in each of the recess regions, sequentially forming a tunneling layer and a channel layer in the hole, forming trenches penetrating through the molded structure, such that the trenches extend in a line shape, removing the sacrificial layers exposed by the trenches, such that the preliminary blocking pattern is exposed, and oxidizing the preliminary blocking pattern, after removing the sacrificial layers, such that a blocking pattern is formed.

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