JP2005123619A - シリコン基板上に形成された窒化物半導体及びその製造方法 - Google Patents
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 102
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 94
- 239000000758 substrate Substances 0.000 title claims abstract description 83
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 52
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000010703 silicon Substances 0.000 title claims abstract description 51
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 claims abstract description 19
- 239000000463 material Substances 0.000 claims description 16
- -1 nitride compound Chemical class 0.000 claims description 11
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 claims 1
- 230000007547 defect Effects 0.000 abstract description 13
- 239000013078 crystal Substances 0.000 abstract description 10
- 150000001875 compounds Chemical class 0.000 description 9
- 239000011800 void material Substances 0.000 description 9
- 238000009736 wetting Methods 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 4
- 238000002017 high-resolution X-ray diffraction Methods 0.000 description 4
- 238000007796 conventional method Methods 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000005693 optoelectronics Effects 0.000 description 2
- 229910052594 sapphire Inorganic materials 0.000 description 2
- 239000010980 sapphire Substances 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000011066 ex-situ storage Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 230000003313 weakening effect Effects 0.000 description 1
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Abstract
【解決手段】シリコン基板20と、前記シリコン基板20上に形成されたバッファ層21と、前記バッファ層21上に形成され、ボイド(void)22を含有した中間層23と、前記中間層23上に形成された平坦化層24と、前記平坦化層24上に形成された窒化物半導体層25と、を含む窒化物半導体及びその製造方法である。これにより、内部の結晶欠陥、転位又はクラックの発生を大きく減少させた窒化物の半導体を低コストで大量生産が可能である。
【選択図】図2
Description
A. Watanabe et al.、 J. Cryst.Growth 128.391(1993) H.Ishikawa et al.、 J.Cryst.Growth 189/190、 178(1998) Y.Kawaguchi et al.、 Jpn.J.Appl.Phys.37、L966(1998)
本発明において、前記平坦化層は、約100nm乃至500nmの厚さに形成されることが望ましい。
11、21、31、71 バッファ層、
12、25、35、75 窒化物半導体層、
13 クラック(内部欠陥)、
22、32、72 ボイド(void;空洞、空隙ないし空間)、
23、33、73 中間層、
24、34、74 平坦化層、
25、35、75、77 窒化物半導体層、
76 活性層、
78、79 電極層。
Claims (16)
- シリコン基板と、
前記シリコン基板上に形成され、ボイド(void)を含有した中間層と、
前記中間層上に形成された平坦化層と、
前記平坦化層上に形成された窒化物半導体層と、を含むことを特徴とするシリコン基板上に形成された窒化物半導体。 - 前記シリコン基板及び前記中間層の間に形成されたバッファ層をさらに含むことを特徴とする請求項1に記載のシリコン基板上に形成された窒化物半導体。
- 前記中間層、平坦化層及び窒化物半導体層は、III族窒化物系化合物の半導体物質を含むことを特徴とする請求項1に記載のシリコン基板上に形成された窒化物半導体。
- 前記中間層、平坦化層及び窒化物半導体層は、GaNを含むことを特徴とする請求項3に記載のシリコン基板上に形成された窒化物半導体。
- 前記平坦化層は、約100nm乃至500nmの厚さに形成されたことを特徴とする請求項1に記載のシリコン基板上に形成された窒化物半導体。
- シリコン基板と、
前記シリコン基板上に形成され、ボイド(void)を含有した中間層と、
前記中間層上に形成された平坦化層と、
前記平坦化層上に形成された第1の窒化物半導体層と、
前記第1の窒化物半導体層の一部位に順次形成された活性層、第2の窒化物半導体層、第1の電極層と、
前記第1の窒化物半導体層の前記活性層が形成されていない部位に形成された第2の電極層と、を含むことを特徴とする発光素子。 - 前記シリコン基板及び前記中間層の間に形成されたバッファ層をさらに含むことを特徴とする請求項6に記載の発光素子。
- シリコン基板上への窒化物系半導体の形成方法であって、
(イ) 前記シリコン基板上にボイド(void)が含まれた中間層を形成させる段階と、
(ロ) 前記中間層上に平坦化層を形成させる段階と、
(ハ) 前記平坦化層上に窒化物系半導体層を形成させる段階と、を含むことを特徴とするシリコン基板上の窒化物半導体の製造方法。 - 前記シリコン基板及び前記中間層の間にバッファ層を形成する段階をさらに含むことを特徴とする請求項8に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記中間層、平坦化層及び窒化物系半導体層は、III族窒化物系化合物の半導体を含むことを特徴とする請求項8に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記III族窒化物系化合物の半導体は、GaNであることを特徴とする請求項10に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記段階(イ)は、約700℃乃至900℃よりなされることを特徴とする請求項11に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記段階(ロ)は、約500℃乃至700℃よりなされることを特徴とする請求項11に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記平坦化層は、約100nm乃至500nmの厚さで形成されたことを特徴とする請求項11に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記段階(ハ)は、約900℃乃至1200℃よりなされることを特徴とする請求項11に記載のシリコン基板上の窒化物半導体の製造方法。
- 前記段階(イ)〜(ハ)は、MOCVD工程によりなされることを特徴とする請求項11に記載のシリコン基板上の窒化物半導体の製造方法。
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-
2004
- 2004-09-27 US US10/949,469 patent/US20050077512A1/en not_active Abandoned
- 2004-10-12 JP JP2004297529A patent/JP2005123619A/ja active Pending
- 2004-10-13 CN CNB2004100850229A patent/CN100452449C/zh not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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KR101087901B1 (ko) | 2009-08-11 | 2011-11-30 | 한국광기술원 | 질화물 반도체 발광소자 및 그 제조방법 |
WO2012050888A2 (en) * | 2010-09-28 | 2012-04-19 | North Carolina State University | Gallium nitride based structures with embedded voids and methods for their fabrication |
WO2012050888A3 (en) * | 2010-09-28 | 2012-08-09 | North Carolina State University | Gallium nitride based structures with embedded voids and methods for their fabrication |
Also Published As
Publication number | Publication date |
---|---|
CN100452449C (zh) | 2009-01-14 |
CN1607683A (zh) | 2005-04-20 |
KR20050035565A (ko) | 2005-04-19 |
US20050077512A1 (en) | 2005-04-14 |
KR100744933B1 (ko) | 2007-08-01 |
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