JP2013211543A - 半導体装置、およびその作製方法 - Google Patents
半導体装置、およびその作製方法 Download PDFInfo
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- JP2013211543A JP2013211543A JP2013038115A JP2013038115A JP2013211543A JP 2013211543 A JP2013211543 A JP 2013211543A JP 2013038115 A JP2013038115 A JP 2013038115A JP 2013038115 A JP2013038115 A JP 2013038115A JP 2013211543 A JP2013211543 A JP 2013211543A
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- oxide semiconductor
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- insulating film
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- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 229910021334 nickel silicide Inorganic materials 0.000 description 1
- RUFLMLWJRZAWLJ-UHFFFAOYSA-N nickel silicide Chemical compound [Ni]=[Si]=[Ni] RUFLMLWJRZAWLJ-UHFFFAOYSA-N 0.000 description 1
- 239000012299 nitrogen atmosphere Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- SIWVEOZUMHYXCS-UHFFFAOYSA-N oxo(oxoyttriooxy)yttrium Chemical compound O=[Y]O[Y]=O SIWVEOZUMHYXCS-UHFFFAOYSA-N 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 239000009719 polyimide resin Substances 0.000 description 1
- PUDIUYLPXJFUGB-UHFFFAOYSA-N praseodymium atom Chemical compound [Pr] PUDIUYLPXJFUGB-UHFFFAOYSA-N 0.000 description 1
- 238000001552 radio frequency sputter deposition Methods 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 238000005057 refrigeration Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- KZUNJOHGWZRPMI-UHFFFAOYSA-N samarium atom Chemical compound [Sm] KZUNJOHGWZRPMI-UHFFFAOYSA-N 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 229910021332 silicide Inorganic materials 0.000 description 1
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 238000005477 sputtering target Methods 0.000 description 1
- 230000035882 stress Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- MZLGASXMSKOWSE-UHFFFAOYSA-N tantalum nitride Chemical compound [Ta]#N MZLGASXMSKOWSE-UHFFFAOYSA-N 0.000 description 1
- GZCRRIHWUXGPOV-UHFFFAOYSA-N terbium atom Chemical compound [Tb] GZCRRIHWUXGPOV-UHFFFAOYSA-N 0.000 description 1
- FRNOGLGSGLTDKL-UHFFFAOYSA-N thulium atom Chemical compound [Tm] FRNOGLGSGLTDKL-UHFFFAOYSA-N 0.000 description 1
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 1
- 229910001887 tin oxide Inorganic materials 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- 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
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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
- 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
- H01L29/78693—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 the semiconducting oxide being amorphous
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- 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
- H01L21/34—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 not provided for in groups H01L21/0405, H01L21/0445, H01L21/06, H01L21/16 and H01L21/18 with or without impurities, e.g. doping materials
- H01L21/42—Bombardment with radiation
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- H01L21/425—Bombardment with radiation with high-energy radiation producing ion implantation
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/04—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by their crystalline structure, e.g. polycrystalline, cubic or particular orientation of crystalline planes
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
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- H01L29/66007—Multistep manufacturing processes
- H01L29/66075—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials
- H01L29/66227—Multistep manufacturing processes of devices having semiconductor bodies comprising group 14 or group 13/15 materials the devices being controllable only by the electric current supplied or the electric potential applied, to an electrode which does not carry the current to be rectified, amplified or switched, e.g. three-terminal devices
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Abstract
【解決手段】絶縁表面上に形成された、ソース領域、ドレイン領域、およびチャネル形成領域を有する酸化物半導体層、該酸化物半導体層上に形成されたゲート絶縁膜、該ゲート絶縁膜上に形成され、チャネル形成領域と重畳するゲート電極、ソース領域と接するソース電極、ドレイン領域と接するドレイン電極、を有し、ソース領域およびドレイン領域は、チャネル形成領域よりも酸素濃度が高い部位を有する構成のトランジスタとする。
【選択図】図1
Description
本実施の形態では、本発明の一態様における半導体装置、およびその作製方法を説明する。
本実施の形態では、本発明の一態様であるトランジスタを使用し、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置(記憶装置)の一例を、図面を用いて説明する。
本実施の形態では、実施の形態1に示すトランジスタを使用し、電力が供給されない状況でも記憶内容の保持が可能で、かつ、書き込み回数にも制限が無い半導体装置について、実施の形態2に示した構成と異なる半導体装置の説明を行う。
本実施の形態では、上記実施の形態に開示したトランジスタを少なくとも一部に用いて構成されるCPU(Central Processing Unit)について説明する。
本明細書に開示する半導体装置は、さまざまな電子機器(遊技機も含む)に適用することができる。電子機器としては、テレビ、モニタ等の表示装置、照明装置、デスクトップ型或いはノート型のパーソナルコンピュータ、ワードプロセッサ、光ディスクなどの記録媒体に静止画または動画を記録、または再生する装置、オーディオプレイヤー、ラジオ、ステレオ、電話機、トランシーバ、携帯無線機、携帯電話、ゲーム機、電卓、携帯情報端末、電子手帳、電子書籍、電子翻訳機、音声入力機器、ビデオカメラ、デジタルスチルカメラ、電気シェーバ、電子レンジ等の高周波加熱装置、電気炊飯器、電気洗濯機、電気掃除機、エアーコンディショナーなどの空調設備、食器洗浄器、食器乾燥器、衣類乾燥器、布団乾燥器、電気冷蔵庫、電気冷凍庫、電気冷凍冷蔵庫、DNA保存用冷凍庫、煙感知器、放射線測定器、透析装置等の医療機器、などが挙げられる。さらに、誘導灯、信号機、ベルトコンベア、エレベータ、エスカレータ、産業用ロボット、電力貯蔵システム等の産業機器も挙げられる。また、内燃機関や電力を用いる電動機により推進する移動体なども、電子制御されるものは電子機器の範疇に含まれるものとする。上記移動体として、例えば、電気自動車(EV)、内燃機関と電動機を併せ持ったハイブリッド車(HEV)、プラグインハイブリッド車(PHEV)、これらのタイヤ車輪を無限軌道に変えた装軌車両、電動アシスト自転車を含む原動機付自転車、自動二輪車、電動車椅子、ゴルフ用カート、小型または大型船舶、潜水艦、ヘリコプター、航空機、ロケット、人工衛星、宇宙探査機や惑星探査機、宇宙船が挙げられる。これらの電子機器の具体例の一部を図10乃至図12に示す。
本明細書で開示されるトランジスタの構造は、チャネル形成領域がCAAC−OS膜で形成されるトランジスタの構造として有用である。以下、CAAC−OS膜では、横方向に酸素が拡散しやすい点について詳述する。
(1)過剰酸素の第1の遷移 Z=1においてT=206K(−67℃)
(2)過剰酸素の第2の遷移 Z=1においてT=923K(650℃)
(3)酸素欠損の第1の遷移 Z=1においてT=701K(428℃)
(4)酸素欠損の第2の遷移 Z=1においてT=1590K(1317℃)
(1)過剰酸素の第1の遷移 T=300KにおいてZ=1.2×104(/秒)
(2)過剰酸素の第2の遷移 T=300KにおいてZ=1.0×10−27(/秒)
(3)酸素欠損の第1の遷移 T=300KにおいてZ=4.3×10−18(/秒)
(4)酸素欠損の第2の遷移 T=300KにおいてZ=1.4×10−56(/秒)
(1)過剰酸素の第1の遷移 T=723KにおいてZ=2.0×109(/秒)
(2)過剰酸素の第2の遷移 T=723KにおいてZ=2.5×10−4(/秒)
(3)酸素欠損の第1の遷移 T=723KにおいてZ=2.5(/秒)
(4)酸素欠損の第2の遷移 T=723KにおいてZ=2.5×10−16(/秒)
101 酸素
110 下地絶縁膜
120 酸化物半導体層
120a チャネル形成領域
120b ソース領域またはドレイン領域
120c 領域
130 ゲート絶縁膜
140 ゲート電極
150a ソース電極
150b ドレイン電極
160 保護膜
170 平坦化膜
191 トランジスタ
192 トランジスタ
193 トランジスタ
1141 スイッチング素子
1142 メモリセル
1143 メモリセル群
1189 ROMインターフェイス
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 バスインターフェイス
1199 ROM
3000 基板
3106 素子分離絶縁層
3200 トランジスタ
3202 トランジスタ
3204 容量素子
3210 接続配線
3220 絶縁層
4162 トランジスタ
4250 メモリセル
4251 メモリセルアレイ
4251a メモリセルアレイ
4251b メモリセルアレイ
4253 周辺回路
4254 容量素子
5021 本体
5022 固定部
5023 表示部
5024 操作ボタン
5025 外部メモリスロット
8000 テレビジョン装置
8001 筐体
8002 表示部
8003 スピーカ部
8200 室内機
8201 筐体
8202 送風口
8203 CPU
8204 室外機
8300 電気冷凍冷蔵庫
8301 筐体
8302 冷蔵室用扉
8303 冷凍室用扉
8304 CPU
9000 テーブル
9001 筐体
9002 脚部
9003 表示部
9004 表示ボタン
9005 電源コード
9033 留め具
9034 スイッチ
9035 電源スイッチ
9036 スイッチ
9038 操作スイッチ
9201 本体
9202 筐体
9203 表示部
9204 キーボード
9205 外部接続ポート
9206 ポインティングデバイス
9630 筐体
9631 表示部
9631a 表示部
9631b 表示部
9632a 領域
9632b 領域
9633 太陽電池
9634 充放電制御回路
9635 バッテリー
9636 DCDCコンバータ
9637 コンバータ
9638 操作キー
9639 ボタン
9700 電気自動車
9701 二次電池
9702 制御回路
9703 駆動装置
9704 処理装置
Claims (10)
- 絶縁表面上に形成された、ソース領域、ドレイン領域、およびチャネル形成領域を有する酸化物半導体層と、
前記酸化物半導体層上に形成されたゲート絶縁膜と、
前記ゲート絶縁膜上に形成され、前記チャネル形成領域と重畳するゲート電極と、
前記ソース領域と接するソース電極と、
前記ドレイン領域と接するドレイン電極と、
を有し、
前記ソース領域および前記ドレイン領域は、前記チャネル形成領域よりも酸素濃度が高い部位を有することを特徴とする半導体装置。 - 請求項1において、前記チャネル形成領域は、c軸に配向した結晶を含み、前記ソース領域および前記ドレイン領域における前記チャネル形成領域よりも酸素濃度が高い部位は、非晶質であることを特徴とする半導体装置。
- 請求項1または2において、前記ソース領域および前記ドレイン領域における前記チャネル形成領域よりも酸素濃度が高い部位には、前記酸化物半導体層の導電率を高める不純物が添加されていることを特徴とする半導体装置。
- 請求項1乃至3のいずれか一項において、前記ゲート電極、前記ソース電極、および前記ドレイン電極の少なくとも一つは、前記酸化物半導体層とは異なる禁制帯幅を持つ半導体層を有する半導体装置と電気的に接続されていることを特徴とする半導体装置。
- 請求項1乃至4のいずれか一項において、前記ゲート絶縁膜上および前記ゲート電極上には、酸化アルミニウムを含む絶縁膜が形成されていることを特徴とする半導体装置。
- 絶縁表面を有する基板を準備する工程と、
前記絶縁表面上に酸化物半導体層を形成する工程と、
前記酸化物半導体層上にゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜上に前記酸化物半導体層と重畳するようにゲート電極を形成する工程と、
前記酸化物半導体層において、前記ゲート電極と重畳しない領域に酸素を添加する工程と、
前記酸化物半導体層において、前記ゲート電極と重畳しない領域に不純物を添加し、ソース領域、ドレイン領域、およびチャネル形成領域を形成する工程と、
前記ゲート絶縁膜、および前記ゲート電極上に絶縁膜を形成する工程と、
前記酸化物半導体層を加熱処理する工程と、
前記ソース領域と接するソース電極、および前記ドレイン領域と接するドレイン電極を形成する工程と、
を上記順序で行うことを特徴とする半導体装置の作製方法。 - 絶縁表面を有する基板を準備する工程と、
前記絶縁表面上に酸化物半導体層を形成する工程と、
前記酸化物半導体層と接するソース電極およびドレイン電極を形成する工程と、
前記酸化物半導体層、前記ソース電極、および前記ドレイン電極上にゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜上に前記酸化物半導体層と重畳するようにゲート電極を形成する工程と、
前記酸化物半導体層において、前記ゲート電極、前記ソース電極、および前記ドレイン電極と重畳しない領域に酸素を添加する工程と、
前記酸化物半導体層において、前記ゲート電極、前記ソース電極、および前記ドレイン電極と重畳しない領域に不純物を添加し、ソース領域、ドレイン領域、およびチャネル形成領域を形成する工程と、
前記ゲート絶縁膜、および前記ゲート電極上に絶縁膜を形成する工程と、
前記酸化物半導体層を加熱処理する工程と、
を上記順序で行うことを特徴とする半導体装置の作製方法。 - 請求項6または7において、前記酸化物半導体層への不純物の添加は、前記酸化物半導体層への酸素の添加前、前記絶縁膜の形成後、または、前記酸化物半導体層の加熱処理後に行うことを特徴とする半導体装置の作製方法。
- 絶縁表面を有する基板を準備する工程と、
前記絶縁表面上にソース電極およびドレイン電極を形成する工程と、
前記ソース電極および前記ドレイン電極と接する酸化物半導体層を形成する工程と、
前記ソース電極、前記ドレイン電極、および前記酸化物半導体層上にゲート絶縁膜を形成する工程と、
前記ゲート絶縁膜上に前記ソース電極、前記ドレイン電極、および前記酸化物半導体層のそれぞれの一部と重畳するゲート電極を形成する工程と、
前記酸化物半導体層において、前記ゲート電極と重畳しない領域に酸素を添加する工程と、
前記ゲート絶縁膜、および前記ゲート電極上に絶縁膜を形成する工程と、
前記酸化物半導体層を加熱処理する工程と、
を有することを特徴とする半導体装置の作製方法。 - 請求項6乃至9のいずれか一項において、前記絶縁膜は、酸化アルミニウムを含む絶縁膜であることを特徴とする半導体装置の作製方法。
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KR20200037195A (ko) | 2020-04-08 |
US20130221345A1 (en) | 2013-08-29 |
KR102170001B1 (ko) | 2020-10-26 |
JP6134537B2 (ja) | 2017-05-24 |
KR20130098924A (ko) | 2013-09-05 |
US20160163880A1 (en) | 2016-06-09 |
US10872982B2 (en) | 2020-12-22 |
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