JP2020535642A - 縦型トランジスタ・デバイス、半導体デバイス、および半導体デバイスを形成するための方法 - Google Patents
縦型トランジスタ・デバイス、半導体デバイス、および半導体デバイスを形成するための方法 Download PDFInfo
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- H01L29/66—Types of semiconductor device ; Multistep manufacturing processes therefor
- H01L29/68—Types of semiconductor device ; Multistep manufacturing processes therefor controllable by only the electric current supplied, or only the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched
- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
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- H01L23/525—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body with adaptable interconnections
- H01L23/5256—Arrangements for conducting electric current within the device in operation from one component to another, i.e. interconnections, e.g. wires, lead frames including external interconnections consisting of a multilayer structure of conductive and insulating layers inseparably formed on the semiconductor body with adaptable interconnections comprising fuses, i.e. connections having their state changed from conductive to non-conductive
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- H01L29/76—Unipolar devices, e.g. field effect transistors
- H01L29/772—Field effect transistors
- H01L29/78—Field effect transistors with field effect produced by an insulated gate
- H01L29/786—Thin film transistors, i.e. transistors with a channel being at least partly a thin film
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- H01L29/76—Unipolar devices, e.g. field effect transistors
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- H01L29/76—Unipolar devices, e.g. field effect transistors
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- H01L29/78—Field effect transistors with field effect produced by an insulated gate
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Abstract
Description
Claims (17)
- 縦型トランジスタ・デバイスであって、
縦方向にスタックされ、ソース層、ドレイン層、および前記ソース層と前記ドレイン層との間のチャネル層を含む、層のスタックと、
前記チャネル層と共通面内に形成されたゲート電極と、
前記ゲート電極と前記チャネル層との間に縦方向に形成されたゲート誘電体と、
前記層のスタックの第1の側で前記層のスタックと接触する第1のコンタクトと、
前記第1のコンタクトから縦方向に反対側に形成される第2のコンタクトと、
を備える、縦型トランジスタ・デバイス。 - 前記層のスタックは同じ基礎材料を含む、請求項1に記載の縦型トランジスタ・デバイス。
- 前記ソース層および前記ドレイン層は、同じドーピング導電性を含み、前記チャネル層はドープされていない、請求項1に記載の縦型トランジスタ・デバイス。
- 前記ゲート電極は、前記チャネル層の周縁において前記チャネル層を完全に取り囲む、請求項1に記載の縦型トランジスタ・デバイス。
- 前記ゲート電極は、前記チャネル層の周縁において前記チャネル層を部分的に取り囲む、請求項1に記載の縦型トランジスタ・デバイス。
- 半導体デバイスは、前記半導体デバイスの配線工程領域において誘電体層に形成される、請求項1に記載の縦型トランジスタ・デバイス。
- 前記ソース層は第1の金属線に接続し、前記ドレイン層は、クロスバー・グリッド構造において前記第1の金属線に対し交差するように配設された第2の金属線に接続する、請求項1に記載の縦型トランジスタ・デバイス。
- 前記ソース層、前記ドレイン層、および前記チャネル層は、デバイス抵抗を増大させ、デバイス電流を低減するための多結晶材料を含む、請求項1に記載の縦型トランジスタ・デバイス。
- 前記多結晶材料はポリシリコンを含む、請求項8に記載の縦型トランジスタ・デバイス。
- 前記ソース層、前記ドレイン層および前記チャネル層は、各々同じ厚さを含む、請求項1に記載の縦型トランジスタ・デバイス。
- 前記同じ厚さは50nm〜200nmである、請求項10に記載の縦型トランジスタ・デバイス。
- 半導体デバイスであって、
基板工程(FEOL)デバイスが形成された基板と、
第1の線、および前記第1の線に対し交差するように形成された第2の線を含むクロスバー・グリッドと、
各々が請求項1〜11のいずれか一項に定められた配線工程(BEOL)縦型トランジスタであって、前記第2のコンタクトは、前記ドレイン層を複数の前記第2の線のうちの1つの第2の線に接続する、BEOL縦型トランジスタと、
を備える、半導体デバイス。 - 半導体デバイスを形成するための方法であって、
層間誘電体(ILD)層を通じて第1のコンタクトを形成することと、
前記ILD層に、前記第1のコンタクトの上に層のスタックを形成することであって、前記層のスタックは、ソース層、ドレイン層、および前記ソース層と前記ドレイン層との間のチャネル層を含むことと、
前記ILD層の上にスペーサ層を形成することと、
前記スペーサ層および前記層のスタックの上にゲート誘電体をコンフォーマルに堆積することと、
前記スペーサ層の前記ゲート誘電体の上に、前記チャネル層と共通面にゲート電極を形成することと、
前記第1のコンタクトと縦方向に反対側に第2のコンタクトを形成することと、
を含む、方法。 - 前記層のスタックを形成することは、前記スタックの各層について同じ基礎材料を堆積することを含み、前記ソース層および前記ドレイン層は、同じドーピング導電性を含み、前記チャネル層はドープされていない、請求項13に記載の方法。
- 前記ゲート電極は、前記チャネル層の周縁において前記チャネル層を少なくとも部分的に取り囲む、請求項13に記載の方法。
- 前記半導体デバイスは、前記半導体デバイスの配線工程領域において誘電体層上に形成される、請求項13に記載の方法。
- 前記ソース層を前記第1のコンタクトにより第1の金属線に接続することと、前記第2のコンタクトを用いて、前記ドレイン層を、クロスバー・グリッド構造において前記第1の金属線に対し交差するように配置された第2の金属線に接続することとを更に含む、請求項13に記載の方法。
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PCT/IB2018/057247 WO2019064130A1 (en) | 2017-09-26 | 2018-09-20 | VERTICAL THIN FILM TRANSISTOR |
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