JP2012253331A - 半導体装置の作製方法 - Google Patents
半導体装置の作製方法 Download PDFInfo
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- JP2012253331A JP2012253331A JP2012105587A JP2012105587A JP2012253331A JP 2012253331 A JP2012253331 A JP 2012253331A JP 2012105587 A JP2012105587 A JP 2012105587A JP 2012105587 A JP2012105587 A JP 2012105587A JP 2012253331 A JP2012253331 A JP 2012253331A
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- film
- oxide semiconductor
- insulating film
- transistor
- semiconductor film
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Classifications
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
- 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
- H01L29/7869—Thin film transistors, i.e. transistors with a channel being at least partly a thin film having a semiconductor body comprising an oxide semiconductor material, e.g. zinc oxide, copper aluminium oxide, cadmium stannate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/04—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer
- H01L21/18—Manufacture or treatment of semiconductor devices or of parts thereof the devices having potential barriers, e.g. a PN junction, depletion layer or carrier concentration layer the devices having semiconductor bodies comprising elements of Group IV of the Periodic Table or AIIIBV compounds with or without impurities, e.g. doping materials
- H01L21/30—Treatment of semiconductor bodies using processes or apparatus not provided for in groups H01L21/20 - H01L21/26
- H01L21/324—Thermal treatment for modifying the properties of semiconductor bodies, e.g. annealing, sintering
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/70—Manufacture or treatment of devices consisting of a plurality of solid state components formed in or on a common substrate or of parts thereof; Manufacture of integrated circuit devices or of parts thereof
- H01L21/77—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate
- H01L21/78—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices
- H01L21/82—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components
- H01L21/84—Manufacture or treatment of devices consisting of a plurality of solid state components or integrated circuits formed in, or on, a common substrate with subsequent division of the substrate into plural individual devices to produce devices, e.g. integrated circuits, each consisting of a plurality of components the substrate being other than a semiconductor body, e.g. being an insulating body
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1203—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body the substrate comprising an insulating body on a semiconductor body, e.g. SOI
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L27/00—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate
- H01L27/02—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers
- H01L27/12—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body
- H01L27/1214—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs
- H01L27/1222—Devices consisting of a plurality of semiconductor or other solid-state components formed in or on a common substrate including semiconductor components specially adapted for rectifying, oscillating, amplifying or switching and having potential barriers; including integrated passive circuit elements having potential barriers the substrate being other than a semiconductor body, e.g. an insulating body comprising a plurality of TFTs formed on a non-semiconducting substrate, e.g. driving circuits for AMLCDs with a particular composition, shape or crystalline structure of the active layer
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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Abstract
【解決手段】トランジスタに、インジウム、スズ、亜鉛およびアルミニウムから選ばれた二種以上、好ましくは三種以上の元素を含む酸化物半導体膜を用いる。該酸化物半導体膜は、基板加熱しつつ成膜する。また、トランジスタの作製工程において、近接の絶縁膜または/およびイオン注入により酸化物半導体膜へ酸素が供給され、キャリア発生源となる酸素欠損を限りなく低減する。また、トランジスタの作製工程において、酸化物半導体膜を高純度化し、水素濃度を極めて低くする。
【選択図】図1
Description
本実施の形態では、本発明の一態様であるトランジスタの一例について、図1乃至図4などを用いて説明する。
本実施の形態では、実施の形態1とは異なる構造のトランジスタについて図5乃至図7などを用いて説明する。
本実施の形態では、実施の形態1または実施の形態2に示したトランジスタを用いて、半導体装置であるメモリを作製する例について説明する。
実施の形態1または実施の形態2で示したトランジスタ、および実施の形態3で示した半導体装置を少なくとも一部に用いてCPU(Central Processing Unit)を構成することができる。
本実施の形態では、実施の形態3または実施の形態4を適用した電子機器の例について説明する。
102 下地絶縁膜
104 保護絶縁膜
106 酸化物半導体膜
106a 高抵抗領域
106b 低抵抗領域
108 ゲート絶縁膜
110 ゲート電極
112 側壁絶縁膜
114 一対の電極
116 層間絶縁膜
118 配線
120 不純物
152 下地絶縁膜
154 保護絶縁膜
156 酸化物半導体膜
158 ゲート絶縁膜
160 導電膜
162 絶縁膜
166 酸化物半導体膜
200 基板
202 下地絶縁膜
206 酸化物半導体膜
206a 高抵抗領域
206b 低抵抗領域
208 ゲート絶縁膜
210 ゲート電極
214 一対の電極
216 層間絶縁膜
218 配線
220 不純物
252 下地絶縁膜
256 酸化物半導体膜
260 導電膜
264 導電膜
324 層間絶縁膜
326 電極
330 キャパシタ
340 トランジスタ
350 トランジスタ
382 下地絶縁膜
384 半導体膜
384a 抵抗領域
384b 抵抗領域
384c 抵抗領域
386 ゲート絶縁膜
392 ゲート電極
394 側壁絶縁膜
396 層間絶縁膜
500 筐体
501 ボタン
502 マイクロフォン
503 表示部
504 スピーカ
505 カメラ
520 筐体
521 ボタン
522 マイクロフォン
523 表示部
600 基板
602 下地絶縁膜
606 酸化物半導体膜
608 ゲート絶縁膜
610 ゲート電極
614 一対の電極
616 層間絶縁膜
618 配線
620 保護膜
1141 スイッチング素子
1142 半導体装置
1143 半導体装置群
1189 ROMインターフェース
1190 基板
1191 ALU
1192 ALUコントローラ
1193 インストラクションデコーダ
1194 インタラプトコントローラ
1195 タイミングコントローラ
1196 レジスタ
1197 レジスタコントローラ
1198 バスインターフェース
1199 ROM
Claims (13)
- 酸化物半導体膜を100℃以上600℃以下の基板温度で成膜し、その後250℃以上650℃以下の温度で加熱処理を行い、
前記酸化物半導体膜上に、少なくとも前記酸化物半導体膜と一部が接する一対の電極を形成し、 前記酸化物半導体膜および前記一対の電極上にゲート絶縁膜を成膜し、
前記ゲート絶縁膜を介して前記酸化物半導体膜上にゲート電極を形成することを特徴とする半導体装置の作製方法。 - 一対の電極を形成し、
前記一対の電極上に、少なくとも前記一対の電極と一部が接する酸化物半導体膜を100℃以上600℃以下の基板温度で成膜し、その後250℃以上650℃以下の温度で加熱処理を行い、
前記酸化物半導体膜および前記一対の電極上にゲート絶縁膜を成膜し、
前記ゲート絶縁膜を介して前記酸化物半導体膜上にゲート電極を形成することを特徴とする半導体装置の作製方法。 - 酸化物半導体膜を100℃以上600℃以下の基板温度で成膜し、その後250℃以上650℃以下の温度で加熱処理を行い、
前記酸化物半導体膜上に絶縁膜を成膜し、
前記絶縁膜を介して前記酸化物半導体膜上にゲート電極を形成し、
前記ゲート電極をマスクに用い、前記酸化物半導体膜に該酸化物半導体膜の抵抗値を低減する不純物を導入し、
前記ゲート電極の側面と接して側壁絶縁膜を形成し、同時に前記絶縁膜を加工してゲート絶縁膜を形成した後、
前記酸化物半導体膜と少なくとも一部が接する一対の電極を形成することを特徴とする半導体装置の作製方法。 - 酸化物半導体膜を100℃以上600℃以下の基板温度で成膜し、その後250℃以上650℃以下の温度で加熱処理を行い、
前記酸化物半導体膜上に絶縁膜を成膜し、
前記絶縁膜を介して前記酸化物半導体膜上にゲート電極を形成し、
前記ゲート電極の側面と接して側壁絶縁膜を形成し、同時に前記絶縁膜を加工してゲート絶縁膜を形成した後、
前記ゲート電極および前記側壁絶縁膜をマスクに用い、前記酸化物半導体膜に該酸化物半導体膜の抵抗値を低減する不純物を導入し、
前記酸化物半導体膜と少なくとも一部が接する一対の電極を形成することを特徴とする半導体装置の作製方法。 - 請求項1乃至請求項4のいずれか一において、
前記酸化物半導体膜の材料がIn−Al−Sn−Zn−O系材料、In−Sn−Zn−O系材料、In−Al−Zn−O系材料およびZn−Sn−O系材料のいずれかであることを特徴とする半導体装置の作製方法。 - 請求項1乃至請求項5のいずれか一において、
前記酸化物半導体膜が、多結晶膜またはCAAC−OS膜であることを特徴とする半導体装置の作製方法。 - 請求項1乃至請求項6のいずれか一において、
前記酸化物半導体膜の下地として、加熱処理により酸素を放出する下地絶縁膜が設けられることを特徴とする半導体装置の作製方法。 - 請求項7において、
前記下地絶縁膜に対し不純物を除去する処理を行った後、大気暴露せずに前記下地絶縁膜を成膜することを特徴とする半導体装置の作製方法。 - 少なくともIn、Sn、Znを含む酸化物半導体膜と、
前記酸化物半導体膜と接して設けられたゲート絶縁膜と、
前記酸化物半導体膜と少なくとも一部が接して設けられた一対の電極と、
前記ゲート絶縁膜を介して前記酸化物半導体膜と重畳して設けられたゲート電極と、を有するトランジスタを有し、
前記トランジスタの電界効果移動度が31cm2/Vs以上であることを特徴とする半導体装置。 - 請求項9において、
前記酸化物半導体膜が、結晶性を有することを特徴とする半導体装置。 - 請求項10において、
前記酸化物半導体膜が多結晶膜であることを特徴とする半導体装置。 - 請求項9乃至10のいずれか一において、
前記トランジスタは、チャネル長が3μm、かつ基板温度が85℃のときのオフ電流が、チャネル幅1μm当たり10zA以下であることを特徴とする半導体装置。 - 請求項9乃至12のいずれか一において、
前記トランジスタは、ゲート電圧に−20V、ドレイン電圧に0.1Vを印加し、150℃で1時間保持したときの、しきい値電圧の変動幅が1V以下であることを特徴とする半導体装置。
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Also Published As
Publication number | Publication date |
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US9893195B2 (en) | 2018-02-13 |
JP2017157867A (ja) | 2017-09-07 |
JP7406609B2 (ja) | 2023-12-27 |
JP2016139819A (ja) | 2016-08-04 |
US20120286260A1 (en) | 2012-11-15 |
JP6468690B2 (ja) | 2019-02-13 |
JP2022173389A (ja) | 2022-11-18 |
KR20120127250A (ko) | 2012-11-21 |
JP5902548B2 (ja) | 2016-04-13 |
JP2021016001A (ja) | 2021-02-12 |
US20150137121A1 (en) | 2015-05-21 |
JP6161756B2 (ja) | 2017-07-12 |
KR101999096B1 (ko) | 2019-07-11 |
JP2019054301A (ja) | 2019-04-04 |
JP2024023689A (ja) | 2024-02-21 |
JP6795631B2 (ja) | 2020-12-02 |
US8946066B2 (en) | 2015-02-03 |
JP7149998B2 (ja) | 2022-10-07 |
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