Semiconductor device

Semiconductor device

A semiconductor device includes a gate stack including a gate insulating layer and a gate electrode on the gate insulating layer. The gate insulating layer includes a first dielectric layer and a second dielectric layer on the first dielectric layer, and a dielectric constant of the second dielectri...

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Hauptverfasser: Kil, Gyuhyun, Back, Doosan, Han, Jung-Hoon, Kim, Dongoh
Format: Patent
Sprache:eng
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BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
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creator Kil, Gyuhyun
Back, Doosan
Han, Jung-Hoon
Kim, Dongoh
description A semiconductor device includes a gate stack including a gate insulating layer and a gate electrode on the gate insulating layer. The gate insulating layer includes a first dielectric layer and a second dielectric layer on the first dielectric layer, and a dielectric constant of the second dielectric layer is greater than a dielectric constant of the first dielectric layer. The semiconductor device also includes a first spacer on a side surface of the gate stack, and a second spacer on the first spacer, wherein the second spacer includes a protruding portion extending from a level lower than a lower surface of the first spacer towards the first dielectric layer, and a dielectric constant of the second spacer is greater than the dielectric constant of the first dielectric layer and less than a dielectric constant of the first spacer.
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subjects BASIC ELECTRIC ELEMENTS
ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR
ELECTRICITY
SEMICONDUCTOR DEVICES
title Semiconductor device
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