JP2006128627A - ナノロッドを利用した窒化物系半導体素子及びその製造方法 - Google Patents
ナノロッドを利用した窒化物系半導体素子及びその製造方法 Download PDFInfo
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- 239000002073 nanorod Substances 0.000 title claims abstract description 94
- 239000004065 semiconductor Substances 0.000 title claims abstract description 50
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 44
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 239000000758 substrate Substances 0.000 claims abstract description 68
- 239000011159 matrix material Substances 0.000 claims abstract description 55
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 27
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 27
- 239000010703 silicon Substances 0.000 claims abstract description 27
- 238000000034 method Methods 0.000 claims description 22
- 229910002704 AlGaN Inorganic materials 0.000 claims description 6
- HQWPLXHWEZZGKY-UHFFFAOYSA-N diethylzinc Chemical compound CC[Zn]CC HQWPLXHWEZZGKY-UHFFFAOYSA-N 0.000 claims description 5
- 238000001039 wet etching Methods 0.000 claims description 4
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 claims description 2
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000005229 chemical vapour deposition Methods 0.000 claims description 2
- 229910001882 dioxygen Inorganic materials 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 2
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 2
- 229910002601 GaN Inorganic materials 0.000 description 94
- 239000002131 composite material Substances 0.000 description 14
- 230000008646 thermal stress Effects 0.000 description 11
- 230000035882 stress Effects 0.000 description 6
- 238000005253 cladding Methods 0.000 description 5
- 239000013078 crystal Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 239000010409 thin film Substances 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- HZXMRANICFIONG-UHFFFAOYSA-N gallium phosphide Chemical compound [Ga]#P HZXMRANICFIONG-UHFFFAOYSA-N 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009827 uniform distribution Methods 0.000 description 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N zinc oxide Inorganic materials [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 1
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- H01L33/005—Processes
- H01L33/0062—Processes for devices with an active region comprising only III-V compounds
- H01L33/0066—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound
- H01L33/007—Processes for devices with an active region comprising only III-V compounds with a substrate not being a III-V compound comprising nitride compounds
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- H01L21/02647—Lateral overgrowth
Abstract
【解決手段】本発明の窒化物系半導体素子によると、シリコン基板上に垂直方向に整列されるよう形成された多数のナノロッドと、上記ナノロッドの上端一部が突出するよう上記ナノロッド同士の空間を充填する非晶質のマトリックス層と、上記マトリックス層上に形成されたGaN層を含む。
【選択図】図2
Description
102 ZnOバッファ層
104 ナノロッド
106 非晶質マトリックス層
108 GaN層
Claims (16)
- シリコン基板上に垂直方向に整列されるよう形成された多数のナノロッドと、
上記ナノロッドの上端一部が突出するよう上記ナノロッド同士の空間を充填する非晶質のマトリックス層と、
上記マトリックス層上に形成されたGaN層とを含む窒化物系半導体素子。 - 上記シリコン基板と上記ナノロッドとの間にZnOバッファ層をさらに含む請求項1に記載の窒化物系半導体素子。
- 上記ナノロッドはZnO、GaN、AlN、AlGaN、またはAlGaInNから成る請求項1に記載の窒化物系半導体素子。
- 上記ナノロッド同士の間隔は100ないし200nmである請求項1に記載の窒化物系半導体素子。
- 上記ナノロッドの直径は10ないし20nmである請求項1に記載の窒化物系半導体素子。
- 上記ナノロッドの長さは約50ないし900nmである請求項1に記載の窒化物系半導体素子。
- 上記非晶質マトリックス層から突出した上記ナノロッドの上端一部の高さは約20ないし100nmである請求項1に記載の窒化物系半導体素子。
- 上記非晶質マトリックス層はシリコン酸化物またはシリコン窒化物から成る請求項1に記載の窒化物系半導体素子。
- シリコン基板上に垂直方向に整列された多数のナノロッドを形成する段階と、
上記ナノロッド同士の空間を充填する非晶質のマトリックス層を形成し上記ナノロッドの上端一部が上記非晶質マトリックス層上面から突出するようにする段階と、
上記ナノロッドの上端一部をシードとして上記マトリックス層上にGaN層を成長させる段階とを含む窒化物系半導体素子の製造方法。 - 上記多数のナノロッドを形成する段階前に上記シリコン基板上にZnOバッファ層を形成する段階をさらに含む請求項9に記載の窒化物系半導体素子の製造方法。
- 上記シリコン基板、ナノロッド及びマトリックス層を上記GaN層から分離する段階をさらに含む請求項9に記載の窒化物系半導体素子の製造方法。
- 上記分離段階は上記ナノロッド及びマトリックス層のウェットエッチングにより行われる請求項11に記載の窒化物系半導体素子の製造方法。
- 上記ナノロッドを形成する段階は、有機金属CVD法を使用して行われる請求項9に記載の窒化物系半導体素子の製造方法。
- 上記ナノロッドを形成する段階において、上記ナノロッド形成のためのソースとしてジエチル亜鉛及び酸素ガスを使用する請求項13に記載の窒化物系半導体素子の製造方法。
- 上記ナノロッドを形成する段階は400ないし500℃の温度で行われる請求項14に記載の窒化物系半導体素子の製造方法。
- 上記GaN層を成長させる段階は1100℃以上の温度及び10ないし300 Torrの圧力下で行われる請求項9に記載の窒化物系半導体素子の製造方法。
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KR1020040087202A KR100664986B1 (ko) | 2004-10-29 | 2004-10-29 | 나노로드를 이용한 질화물계 반도체 소자 및 그 제조 방법 |
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US20060091408A1 (en) | 2006-05-04 |
US7981714B2 (en) | 2011-07-19 |
KR100664986B1 (ko) | 2007-01-09 |
JP4242372B2 (ja) | 2009-03-25 |
US20090269909A1 (en) | 2009-10-29 |
KR20060038059A (ko) | 2006-05-03 |
US7737429B2 (en) | 2010-06-15 |
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