JP5312798B2 - 高性能fetデバイス - Google Patents
高性能fetデバイス Download PDFInfo
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- JP5312798B2 JP5312798B2 JP2007552382A JP2007552382A JP5312798B2 JP 5312798 B2 JP5312798 B2 JP 5312798B2 JP 2007552382 A JP2007552382 A JP 2007552382A JP 2007552382 A JP2007552382 A JP 2007552382A JP 5312798 B2 JP5312798 B2 JP 5312798B2
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- 239000004065 semiconductor Substances 0.000 claims abstract description 166
- 239000000758 substrate Substances 0.000 claims abstract description 95
- 230000005669 field effect Effects 0.000 claims abstract description 20
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 133
- 239000011787 zinc oxide Substances 0.000 claims description 67
- 239000000463 material Substances 0.000 claims description 37
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- 239000002184 metal Substances 0.000 claims description 11
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- 239000000969 carrier Substances 0.000 description 32
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- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 19
- 229910052785 arsenic Inorganic materials 0.000 description 19
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 19
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 17
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- 238000000034 method Methods 0.000 description 5
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- 229910052801 chlorine Inorganic materials 0.000 description 2
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- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 description 1
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- 229910052737 gold Inorganic materials 0.000 description 1
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- 229910052759 nickel Inorganic materials 0.000 description 1
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- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
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- 229910052712 strontium Inorganic materials 0.000 description 1
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052715 tantalum Inorganic materials 0.000 description 1
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
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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
- H01L29/80—Field effect transistors with field effect produced by a PN or other rectifying junction gate, i.e. potential-jump barrier
- H01L29/808—Field effect transistors with field effect produced by a PN or other rectifying junction gate, i.e. potential-jump barrier with a PN junction gate, e.g. PN homojunction gate
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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
- H01L29/16—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only elements of Group IV of the Periodic Table
- H01L29/1608—Silicon carbide
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- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
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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
- H01L29/26—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, elements provided for in two or more of the groups H01L29/16, H01L29/18, H01L29/20, H01L29/22, H01L29/24, e.g. alloys
- H01L29/267—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, elements provided for in two or more of the groups H01L29/16, H01L29/18, H01L29/20, H01L29/22, H01L29/24, e.g. alloys in different semiconductor regions, e.g. heterojunctions
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
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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
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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
- H01L29/80—Field effect transistors with field effect produced by a PN or other rectifying junction gate, i.e. potential-jump barrier
- H01L29/812—Field effect transistors with field effect produced by a PN or other rectifying junction gate, i.e. potential-jump barrier with a Schottky gate
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- Junction Field-Effect Transistors (AREA)
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Description
本特許出願は、2005年1月25日に出願された「高性能FETデバイス及び方法(High−Performance FET Devices and Methods)」なる名称の米国仮特許出願第60/647,177号(代理人整理番号MOXT−003−PR)の優先権を主張し、またこの仮特許出願は、全体が記載されているかの如く参照により本明細書に援用される。
本発明は、一般に、半導体電界効果トランジスタ(FET)デバイスの性能における改善、特に、FETデバイスの高周波性能における改善のための、ゲート電圧バイアス供給回路素子を備えたエピタキシャル積層構造に関し、さらに、かかるデバイスに関連する方法に関する。
電界効果トランジスタ(FET)デバイスを増幅回路で用いて、無線周波数(RF)出力を増加させることができる。従来のFETは、単純な構造を有し、容易に製造することができる。高周波性能を得るために、ガリウムヒ素が用いられていた。特に、高温及び高放射線条件等の不利な動作条件では、高出力性能を得るために、炭化ケイ素及び窒化ガリウム等の広バンドギャップ半導体材料が用いられる。
スリラン(Sriran) 5,821,576
バリガ(Baliga) 5,399,883
テラニ(Tehrani)、他 5,081,511
ストリフラー(Strifler)、他 4,935,377
ウエノ(Ueno) 5,227,644
ハセガワ(Hasegawa) 5,643,811
パーマー(Palmour) 5,270,554
アロック(Alok)、他 6,559,068
ヤン(Yang)、他 6,806,157
ゴロンキン(Goronkin)、他 5,298,441
ブイノスキー(Buynoski) 5,729,045
ドーナス(Donath)、他 6,274,916
(1)この膜は、2族(ベリリウム、マグネシウム、カルシウム、ストロンチウム、バリウム及びラジウム)、12族(亜鉛、カドミウム及び水銀)、2族及び12族、並びに12族及び16族(酸素、硫黄、セレン、テルル及びポロニウム)元素からなる群から選択された元素の酸化物化合物であり、
(2)p型ドーパントは、1族(水素、リチウム、ナトリウム、カリウム、ルビジウム、セシウム及びフランシウム)、11族(銅、銀及び金)、5族(バナジウム、ニオブ及びタンタル)、並びに15族(窒素、カリウム、ヒ素、アンチモン及びビスマス)元素からなる群から選択される元素である。
本発明は、他にも態様があるが、とりわけこれらの必要性に対処する。特に、本発明の一態様により、半導体電界効果トランジスタ(FET)デバイスのために機能及び速度を向上させるためのゲート電圧バイアス供給回路素子を備え、且つ高周波における動作のための特段の能力を備えたエピタキシャル積層構造が提供される。
図1は、本発明に係るFETの第1の実施形態100を示す。n型導電性の第1の半導体層104は、n型導電性の単結晶基板102上にエピタキシャルに成長する。p型導電性の第2の半導体層106は、第1の半導体n型層上にエピタキシャルに成長する。ゲート領域G、ドレイン領域D及びソース領域Sは、ゲート領域Gがソース領域Sとドレイン領域Dとの間に位置する状態で、第2の半導体p型層106上に画定される。オーミック電気コンタクト112は、ソース及びドレイン領域上に形成される。ゲートコンタクトをゲート領域G上に形成し、それにより、p型キャリアを有する活性層を形成する。ドレイン電圧をソースとドレインとの間に印加して、活性層に電界を形成する。基板を電気コンタクトのために準備し、電気コンタクトをn型基板に形成して、ゲート電圧バイアス供給回路素子をゲートコンタクトとn型基板との間に、n型基板に対してゲートコンタクトが負である電圧極性で、十分に接続できるようにする。ゲート電圧バイアスの大きさは、デバイスの性能特性を十分に向上させるように調節される。
ここで、本発明の特定の実施形態及びそれらの特徴の説明を提供する。上述したように、本発明は、FETデバイスの性能、特には、それらの高周波性能の向上のためにゲート電圧バイアス供給回路素子を備えたエピタキシャル積層構造に関する。
Claims (6)
- エピタキシャル積層構造を備える電界効果トランジスタ(FET)であって、
n型又はp型から選択された導電性を有する単結晶の基板と、
前記基板上又は前記基板上のバッファ層上にある第1の半導体層であって、当該第1の半導体層は、前記基板又は前記バッファ層と同一の導電性を有する、第1の半導体層と、
前記第1の半導体層上にある第2の半導体層であって、当該第2の半導体層は活性半導体層であり、当該第2の半導体層の導電性は、前記第1の半導体層の導電性と反対であり、前記第1の半導体層及び前記第2の半導体層の少なくとも一方は、酸化亜鉛又は酸化亜鉛の合金を含み、
ソースコンタクト及びドレインコンタクトをそれぞれ形成する、前記第2の半導体層上にある2つの電気コンタクトと、
前記ソースコンタクトと前記ドレインコンタクトとの間に位置し、活性チャネル層を形成する、前記第2の半導体層上にあるゲートコンタクトと、
前記基板又は前記第1の半導体層に形成された電気コンタクトと、
(1)前記基板又は前記第1の半導体層に形成された前記電気コンタクト、及び、(2)前記ゲートコンタクトに接続されたゲート電圧バイアス供給回路素子と、
を備える電界効果トランジスタ。 - MESFETを形成するために、前記活性チャネル層上にショットキー金属半導体ゲー
トコンタクトをさらに備える、請求項1に記載の、エピタキシャル積層構造を備える電界効果トランジスタ。 - JFETを形成するために、前記ゲートコンタクトと前記活性チャネル層との中間に材
料層をさらに備える、請求項1に記載の、エピタキシャル積層構造を備える電界効果トランジスタ。 - MOSFETを形成するために、前記ゲートコンタクトと前記活性チャネル層との中間
に材料層をさらに備える、請求項1に記載の、エピタキシャル積層構造を備える電界効果トランジスタ。 - 前記基板又はバッファ層の導電性はn型であり、前記第1の半導体層の導電性はn型であり、前記第2の半導体層の導電性はp型である、請求項1に記載の、エピタキシャル積層構造を備える電界効果トランジスタ。
- 前記基板又はバッファ層の導電性はp型であり、前記第1の半導体層の導電性はp型であり、前記第2の半導体層の導電性はn型である、請求項1に記載の、エピタキシャル積層構造を備える電界効果トランジスタ。
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JP5034403B2 (ja) * | 2006-09-21 | 2012-09-26 | 富士通セミコンダクター株式会社 | 半導体集積回路装置 |
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