JP2009016875A - 低順電圧で低逆電流の動作特性を有する窒化ガリウムベースのダイオード - Google Patents
低順電圧で低逆電流の動作特性を有する窒化ガリウムベースのダイオード Download PDFInfo
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- JP2009016875A JP2009016875A JP2008264568A JP2008264568A JP2009016875A JP 2009016875 A JP2009016875 A JP 2009016875A JP 2008264568 A JP2008264568 A JP 2008264568A JP 2008264568 A JP2008264568 A JP 2008264568A JP 2009016875 A JP2009016875 A JP 2009016875A
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- 229910002601 GaN Inorganic materials 0.000 title description 67
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 title description 40
- 230000004888 barrier function Effects 0.000 claims abstract description 105
- 229910052751 metal Inorganic materials 0.000 claims abstract description 72
- 239000002184 metal Substances 0.000 claims abstract description 72
- 239000000463 material Substances 0.000 claims abstract description 29
- 230000005641 tunneling Effects 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 6
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- 239000012535 impurity Substances 0.000 claims description 4
- 230000002708 enhancing effect Effects 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 abstract description 37
- 150000002739 metals Chemical class 0.000 abstract description 4
- 239000000758 substrate Substances 0.000 description 24
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 11
- 229910002704 AlGaN Inorganic materials 0.000 description 10
- 229910010271 silicon carbide Inorganic materials 0.000 description 9
- 230000005684 electric field Effects 0.000 description 8
- 230000001965 increasing effect Effects 0.000 description 7
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 6
- 229910052710 silicon Inorganic materials 0.000 description 6
- 239000010703 silicon Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 5
- 229910052581 Si3N4 Inorganic materials 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 4
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000003574 free electron Substances 0.000 description 3
- 150000004767 nitrides Chemical class 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 238000013459 approach Methods 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 150000002500 ions Chemical class 0.000 description 2
- 238000001020 plasma etching Methods 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- TVZRAEYQIKYCPH-UHFFFAOYSA-N 3-(trimethylsilyl)propane-1-sulfonic acid Chemical compound C[Si](C)(C)CCCS(O)(=O)=O TVZRAEYQIKYCPH-UHFFFAOYSA-N 0.000 description 1
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002800 charge carrier Substances 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000000779 depleting effect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 229910052733 gallium Inorganic materials 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011810 insulating material Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 description 1
- 229910052451 lead zirconate titanate Inorganic materials 0.000 description 1
- GQYHUHYESMUTHG-UHFFFAOYSA-N lithium niobate Chemical compound [Li+].[O-][Nb](=O)=O GQYHUHYESMUTHG-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000005693 optoelectronics Effects 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 230000003071 parasitic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- VEALVRVVWBQVSL-UHFFFAOYSA-N strontium titanate Chemical compound [Sr+2].[O-][Ti]([O-])=O VEALVRVVWBQVSL-UHFFFAOYSA-N 0.000 description 1
- 238000004347 surface barrier Methods 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- 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
- H01L29/40—Electrodes ; Multistep manufacturing processes therefor
- H01L29/43—Electrodes ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/47—Schottky barrier electrodes
- H01L29/475—Schottky barrier electrodes on AIII-BV compounds
-
- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/872—Schottky diodes
-
- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/872—Schottky diodes
- H01L29/8725—Schottky diodes of the trench MOS barrier type [TMBS]
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- 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
- H01L29/86—Types of semiconductor device ; Multistep manufacturing processes therefor controllable only by variation of the electric current supplied, or only the electric potential applied, to one or more of the electrodes carrying the current to be rectified, amplified, oscillated or switched
- H01L29/861—Diodes
- H01L29/88—Tunnel-effect diodes
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- 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
- H01L29/02—Semiconductor bodies ; Multistep manufacturing processes therefor
- H01L29/12—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed
- H01L29/20—Semiconductor bodies ; Multistep manufacturing processes therefor characterised by the materials of which they are formed including, apart from doping materials or other impurities, only AIIIBV compounds
- H01L29/2003—Nitride compounds
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- Power Engineering (AREA)
- Physics & Mathematics (AREA)
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- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Electrodes Of Semiconductors (AREA)
Abstract
【解決手段】本発明の一実施形態は、そのフェルミ準位(または表面ポテンシャル)がピン止めされないGaN系材料から作成されたショットキー障壁ダイオード(10)である。金属−半導体接合での障壁ポテンシャル(33)は、使用する金属(16)のタイプに応じて変動し、特定の金属を使用することにより、ダイオードのショットキー障壁のポテンシャル(33)が下がり、Vfが0.1〜0.3Vの範囲となる。別の実施形態(40)では、トレンチ構造(45)が、逆漏れ電流を低減するためにショットキーダイオード半導体材料(44)上に形成され、隣接するトレンチ(46)の間にメサ領域(49)を有するいくつかの平行な等間隔のトレンチ(46)を有する。
【選択図】図4
Description
図2は、真空中の様々な金属表面についての金属の仕事関数21と、特定の金属の原子番号22との関係を示すグラフ20である。金属は、ショットキー障壁のポテンシャルが低く、かつVfが低くなるように、しかし十分高く選んで逆電流を低く保つべきである。例えば、半導体の電子親和力と等しい仕事関数を有する金属を選んだ場合、障壁ポテンシャルはゼロに近づく。これにより、Vfがゼロに近づき、さらにはダイオードの逆電流が増大し、それによってダイオードがオーム特性を呈して整流が行われない。
図5に、順バイアスの下で障壁領域を通る電子トンネル効果の結果としてVfが低くなる新しいダイオードの別の実施形態50を示す。障壁をトンネリングすることにより、電子は、障壁を超える従来の熱電子放出によって障壁を横切る必要がない。
Claims (7)
- n+に不純物を添加された層(52)と、
前記n+に不純物を添加された層(52)に隣接するn−に不純物を添加された層(53)と、
前記n+に不純物を添加された層(52)と反対側の、前記n−に不純物を添加された層(53)に隣接する障壁層(54)と、
前記n−に不純物を添加された層(53)の反対側の、前記障壁層(54)上の金属層(56)であって、前記n−に不純物を添加された層(53)は、前記障壁層(54)と共に障壁ポテンシャル(81)を有する接合を形成し、前記障壁ポテンシャル(81)により、順バイアス下で前記障壁ポテンシャル(81)を通過する電子トンネル効果の結果としてダイオードのオン状態電圧が低くなる金属層(56)と
を備えたことを特徴とするトンネルダイオード。 - 前記障壁層(54)は、電子トンネル効果を高めることによって前記ダイオードのオン状態電圧を低下させる圧電双極子を有することを特徴とする請求項1に記載のダイオード。
- 前記圧電双極子の数は、前記障壁層の厚さが増大するにつれて増加し、一方なおトンネル効果電流が可能であることを特徴とする請求項1に記載のダイオード。
- 前記n+に不純物を添加された層(52)、n−に不純物を添加された層(53)、および障壁層(54)は、極性材料を含むことを特徴とする請求項1に記載のダイオード。
- 前記n+に不純物を添加された層(52)、n−に不純物を添加された層(53)、および障壁層(54)は、極性材料または非極性材料、あるいはそれらの組合せから形成されることを特徴とする請求項1に記載のダイオード。
- 前記n+に不純物を添加された層(52)、n−に不純物を添加された層(53)、および障壁層(54)は、酸化亜鉛などの二元極性酸化物から形成されることを特徴とする請求項1に記載のダイオード。
- 前記障壁およびn−に不純物を添加された層(123、124)内にトレンチ(121)構造をさらに備え、逆バイアス下で逆漏れ電流を受け、前記トレンチ構造(121)は、前記逆漏れ電流の量を低減することを特徴とする請求項1に記載のダイオード。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/911,155 US20030015708A1 (en) | 2001-07-23 | 2001-07-23 | Gallium nitride based diodes with low forward voltage and low reverse current operation |
US09/911,155 | 2001-07-23 |
Related Parent Applications (1)
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JP2003529535A Division JP4874518B2 (ja) | 2001-07-23 | 2002-07-08 | 低順電圧で低逆電流の動作特性を有する窒化ガリウムベースのダイオード |
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Publication Number | Publication Date |
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JP2009016875A true JP2009016875A (ja) | 2009-01-22 |
JP5032436B2 JP5032436B2 (ja) | 2012-09-26 |
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JP2003529535A Expired - Lifetime JP4874518B2 (ja) | 2001-07-23 | 2002-07-08 | 低順電圧で低逆電流の動作特性を有する窒化ガリウムベースのダイオード |
JP2008264568A Expired - Lifetime JP5032436B2 (ja) | 2001-07-23 | 2008-10-10 | トンネルダイオード |
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JP2003529535A Expired - Lifetime JP4874518B2 (ja) | 2001-07-23 | 2002-07-08 | 低順電圧で低逆電流の動作特性を有する窒化ガリウムベースのダイオード |
Country Status (9)
Country | Link |
---|---|
US (4) | US20030015708A1 (ja) |
EP (2) | EP2315256B1 (ja) |
JP (2) | JP4874518B2 (ja) |
KR (1) | KR100917699B1 (ja) |
CN (2) | CN101127368B (ja) |
AT (1) | ATE515803T1 (ja) |
CA (1) | CA2454310C (ja) |
TW (1) | TW564486B (ja) |
WO (1) | WO2003026021A2 (ja) |
Cited By (1)
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JP2013102081A (ja) * | 2011-11-09 | 2013-05-23 | Tamura Seisakusho Co Ltd | ショットキーバリアダイオード |
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JP2000049363A (ja) * | 1998-07-31 | 2000-02-18 | Denso Corp | ショットキーダイオード及びその製造方法 |
JP2000150920A (ja) * | 1998-11-12 | 2000-05-30 | Nippon Telegr & Teleph Corp <Ntt> | ショットキ接合型半導体ダイオード装置の製法 |
Cited By (6)
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JP2013102081A (ja) * | 2011-11-09 | 2013-05-23 | Tamura Seisakusho Co Ltd | ショットキーバリアダイオード |
US9171967B2 (en) | 2011-11-09 | 2015-10-27 | Tamura Corporation | Schottky barrier diode |
US9412882B2 (en) | 2011-11-09 | 2016-08-09 | Tamura Corporation | Schottky barrier diode |
US9595586B2 (en) | 2011-11-09 | 2017-03-14 | Tamura Corporation | Schottky barrier diode |
US10600874B2 (en) | 2011-11-09 | 2020-03-24 | Tamura Corporation | Schottky barrier diode |
US11264466B2 (en) | 2011-11-09 | 2022-03-01 | Tamura Corporation | Schottky barrier diode |
Also Published As
Publication number | Publication date |
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ATE515803T1 (de) | 2011-07-15 |
CN101127368A (zh) | 2008-02-20 |
WO2003026021A2 (en) | 2003-03-27 |
TW564486B (en) | 2003-12-01 |
KR20040030849A (ko) | 2004-04-09 |
KR100917699B1 (ko) | 2009-09-21 |
CN100373634C (zh) | 2008-03-05 |
EP1410445B1 (en) | 2011-07-06 |
CA2454310A1 (en) | 2003-03-27 |
CA2454310C (en) | 2015-07-07 |
JP5032436B2 (ja) | 2012-09-26 |
EP2315256A2 (en) | 2011-04-27 |
US7994512B2 (en) | 2011-08-09 |
US20030062525A1 (en) | 2003-04-03 |
EP2315256B1 (en) | 2015-04-08 |
JP2005503675A (ja) | 2005-02-03 |
US7476956B2 (en) | 2009-01-13 |
CN101127368B (zh) | 2010-08-25 |
US6949774B2 (en) | 2005-09-27 |
CN1555581A (zh) | 2004-12-15 |
EP1410445A2 (en) | 2004-04-21 |
EP2315256A3 (en) | 2011-06-29 |
US20050242366A1 (en) | 2005-11-03 |
WO2003026021A3 (en) | 2003-11-20 |
US20040080010A1 (en) | 2004-04-29 |
US20030015708A1 (en) | 2003-01-23 |
JP4874518B2 (ja) | 2012-02-15 |
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