JP2005260230A - 窒化物半導体素子及びその製造方法 - Google Patents
窒化物半導体素子及びその製造方法 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 170
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 108
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 32
- 239000000758 substrate Substances 0.000 claims abstract description 82
- 239000010409 thin film Substances 0.000 claims description 93
- 238000000034 method Methods 0.000 claims description 43
- 239000002243 precursor Substances 0.000 claims description 23
- 229910052710 silicon Inorganic materials 0.000 claims description 19
- 239000013078 crystal Substances 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 239000010703 silicon Substances 0.000 claims description 15
- 239000007789 gas Substances 0.000 claims description 14
- 239000002184 metal Substances 0.000 claims description 14
- 229910052751 metal Inorganic materials 0.000 claims description 14
- 238000000151 deposition Methods 0.000 claims description 13
- 238000005229 chemical vapour deposition Methods 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 229910052594 sapphire Inorganic materials 0.000 claims description 9
- 239000010980 sapphire Substances 0.000 claims description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 claims description 7
- 239000011701 zinc Substances 0.000 claims description 7
- XOYLJNJLGBYDTH-UHFFFAOYSA-M chlorogallium Chemical compound [Ga]Cl XOYLJNJLGBYDTH-UHFFFAOYSA-M 0.000 claims description 6
- 239000010408 film Substances 0.000 claims description 6
- 229910052749 magnesium Inorganic materials 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 5
- 239000012159 carrier gas Substances 0.000 claims description 5
- 239000011521 glass Substances 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 229910052732 germanium Inorganic materials 0.000 claims description 4
- 229910052738 indium Inorganic materials 0.000 claims description 4
- 238000001451 molecular beam epitaxy Methods 0.000 claims description 4
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000010453 quartz Substances 0.000 claims description 4
- 238000000427 thin-film deposition Methods 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052725 zinc Inorganic materials 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- 229910052796 boron Inorganic materials 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 238000005566 electron beam evaporation Methods 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- 229910052739 hydrogen Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 3
- 229910052717 sulfur Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- 229910052720 vanadium Inorganic materials 0.000 claims description 3
- 238000007740 vapor deposition Methods 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- AXAZMDOAUQTMOW-UHFFFAOYSA-N dimethylzinc Chemical group C[Zn]C AXAZMDOAUQTMOW-UHFFFAOYSA-N 0.000 claims description 2
- 238000004544 sputter deposition Methods 0.000 claims description 2
- YBRBMKDOPFTVDT-UHFFFAOYSA-N tert-butylamine Chemical compound CC(C)(C)N YBRBMKDOPFTVDT-UHFFFAOYSA-N 0.000 claims description 2
- 239000012808 vapor phase Substances 0.000 claims description 2
- 150000003376 silicon Chemical class 0.000 claims 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical group [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims 1
- 239000001301 oxygen Substances 0.000 claims 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 38
- 239000011787 zinc oxide Substances 0.000 description 17
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 230000012010 growth Effects 0.000 description 5
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 4
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000003054 catalyst Substances 0.000 description 3
- 229910052737 gold Inorganic materials 0.000 description 3
- 239000010931 gold Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000002019 doping agent Substances 0.000 description 2
- 238000011066 ex-situ storage Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000005468 ion implantation Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 229910010271 silicon carbide Inorganic materials 0.000 description 2
- 239000010936 titanium Substances 0.000 description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- 229910000980 Aluminium gallium arsenide Inorganic materials 0.000 description 1
- -1 GaN Chemical class 0.000 description 1
- 229910005540 GaP Inorganic materials 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010894 electron beam technology Methods 0.000 description 1
- 238000000635 electron micrograph Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 229910052763 palladium Inorganic materials 0.000 description 1
- KDLHZDBZIXYQEI-UHFFFAOYSA-N palladium Substances [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 description 1
- 230000036417 physical growth Effects 0.000 description 1
- 238000009832 plasma treatment Methods 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000002250 progressing effect Effects 0.000 description 1
- 238000001878 scanning electron micrograph Methods 0.000 description 1
- 238000002207 thermal evaporation Methods 0.000 description 1
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Abstract
【解決手段】 本発明による窒化物半導体素子は、基板と、前記基板上に成長された棒状の多数の半導体ナノバーと、前記半導体ナノバーの間と前記半導体ナノバーの上部とに蒸着されて分布され、紫外線、可視光線又は赤外線領域の光を放出する窒化物半導体薄膜と、を含む。
【選択図】 図1
Description
Ga(l)+HCl(g)→GaCl(g)+1/2H2(g)
GaCl(g)+NH3→GaN+HCl(g)+H2
HCl(g)+NH3→NH4Cl(g)
<実施の形態>
110 半導体ナノバー
120 GaN薄膜
210 n−タイプ半導体ナノバー
220 n−タイプGaN薄膜
230 p−タイプGaN薄膜
Claims (31)
- 基板と、
前記基板上に成長された棒状の多数の半導体ナノバーと、
前記半導体ナノバーの間と前記半導体ナノバーの上部とに蒸着分布され、紫外線、可視光線又は赤外線領域の光を放出する窒化物半導体薄膜と、を含むこと
を特徴とする窒化物半導体素子。 - 前記半導体ナノバーと前記窒化物半導体薄膜とは、結晶構造が同一であること
を特徴とする請求項1に記載の窒化物半導体素子。 - 前記半導体ナノバーと前記窒化物半導体薄膜とは、結晶定数差が少なくとも20%以内であること
を特徴とする請求項1に記載の窒化物半導体素子。 - 前記半導体ナノバーは、ZnOからなっており、前記窒化物半導体薄膜は、GaNからなっており、前記結晶構造は同一であり、前記結晶定数差は1.8%であること
を特徴とする請求項2又は3に記載の窒化物半導体素子。 - 前記半導体ナノバーは、前記基板に対して垂直方向にランダムに配列されていること
を特徴とする請求項1に記載の窒化物半導体素子。 - 前記半導体ナノバーは、酸化物、窒化物、カーバイド、III−V族又はII−VI族化合物、又はシリコン系列の半導体からなること
を特徴とする請求項1に記載の窒化物半導体素子。 - 前記半導体ナノバーは、Mg、Cd、Ti、Li、Cu、Al、Ni、Y、Ag、Mn、V、Fe、La、Ta、Nb、Ga、In、S、Se、P、As、Co、Cr、B、N、Sb及びHよりなる群から選択された1種以上の異種物質を追加に含むこと
を特徴とする請求項6に記載の窒化物半導体素子。 - 前記半導体ナノバーの直径は1〜1000nmであり、長さは10nm〜100μmであること
を特徴とする請求項1に記載の窒化物半導体素子。 - 前記窒化物半導体薄膜は、GaN、AlN、InN又はこれらの結合(Ga1−XAl1−YIn1−ZN、0≦x、y、z≦1)からなった膜であること
を特徴とする請求項1に記載の窒化物半導体素子。 - 前記窒化物半導体薄膜は、Si、Ge、Mg、Zn、O、Se、Mn、Ti、Ni及びFeよりなる群から選択された1種以上の異種物質を追加に含むこと
を特徴とする請求項9に記載の窒化物半導体素子。 - 前記基板は、シリコン基板、ガラス基板、酸化シリコン(SiO2)基板、サファイア基板、ITO基板、石英基板又は金属基板からなること
を特徴とする請求項1に記載の窒化物半導体素子。 - 基板を用意する段階と、
前記基板上に所定の反応前駆体を反応させて垂直方向に成長された棒状の多数の半導体ナノバーを形成する段階と、
前記半導体ナノバーをシード(Seed)として利用して前記半導体ナノバーが形成された基板上に、紫外線、可視光線又は赤外線領域の光を放出する窒化物半導体薄膜を蒸着する段階と、を含むこと
を特徴とする窒化物半導体素子の製造方法。 - 前記半導体ナノバーと前記窒化物半導体薄膜とは、結晶構造が同一である物質により形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーと前記窒化物半導体薄膜とは、結晶定数差が少なくとも20%以内である物質により形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーは、ZnOにより形成し、前記窒化物半導体薄膜は、GaNにより形成し、前記結晶構造は同一であり、前記結晶定数差は1.8%になるように形成すること
を特徴とする請求項13又は14に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーは、前記基板に対して垂直方向にランダムに配列されるように形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーは、酸化物、窒化物、カーバイド、III−V族又はII−VI族化合物、又はシリコン系列の半導体により形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーは、Mg、Cd、Ti、Li、Cu、Al、Ni、Y、Ag、Mn、V、Fe、La、Ta、Nb、Ga、In、S、Se、P、As、Co、Cr、B、N、Sb及びHよりなる群から選択された1種以上の異種物質を追加に含むように形成すること
を特徴とする請求項17に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーの直径は、1〜1000nmであり、長さは、10nm〜100μmであること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記窒化物半導体薄膜は、GaN、AlN、InN又はこれらの結合(Ga1−XAl1−YIn1−ZN、0≦x、y、z≦1)からなった膜により形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記窒化物半導体薄膜は、Si、Ge、Mg、Zn、O、Se、Mn、Ti、Ni及びFeよりなる群から選択された1種以上の異種物質を追加に含むように形成すること
を特徴とする請求項20に記載の窒化物半導体素子の製造方法。 - 前記基板は、シリコン基板、ガラス基板、酸化シリコン(SiO2)基板、サファイア基板、ITO基板、石英基板又は金属基板からなること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーは、化学蒸着法、スパッタリング法、熱又は電子ビーム蒸発法、パルスレーザー蒸着法又は気相移送法の中から選ばれた一つの方法を利用して形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーは、有機金属化学蒸着法を利用して形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記窒化物半導体薄膜は、有機金属化学蒸着法(MOCVD)、分子ビームエピタキシ薄膜蒸着法(MBE)又はHVPE法(Hydride Vapor Phase Epitaxy)を利用して形成すること
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記半導体ナノバーを形成する段階は、前記基板を反応器内に入れる段階と、
第1の反応前駆体と第2の反応前駆体とを運搬気体を利用して前記反応器内に各々注入する段階と、
所定範囲の温度と所定範囲の圧力とで前記第1の反応前駆体と前記第2の反応前駆体とを化学反応させて前記基板上に棒状の半導体ナノバーを成長させる段階と、を含むこと
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記第1の反応前駆体は、ジメチル亜鉛(Zn(CH3)2)であり、前記第2の反応前駆体は、酸素(O2)であること
を特徴とする請求項26に記載の窒化物半導体素子の製造方法 。 - 前記所定範囲の温度は、400〜900℃であり、前記所定範囲の圧力は、10−5〜760mmHgであること
を特徴とする請求項26に記載の窒化物半導体素子の製造方法。 - 前記窒化物半導体薄膜を蒸着する段階は、前記半導体ナノバーが形成された基板を反応器内に入れる段階と、
反応前駆体と窒化物ソースガスとを運搬気体を利用して前記反応器内に各々注入する段階と、
所定範囲の温度と所定範囲の圧力とで前記反応前駆体と前記窒化物ソースガスとを化学反応させて窒化物半導体薄膜を蒸着させる段階と、を含むこと
を特徴とする請求項12に記載の窒化物半導体素子の製造方法。 - 前記反応前駆体は、TMGa、TEGa又はGaCl3であり、前記窒化物ソースガスは、NH3、窒素又は、第3級ブチルアミン(Tertiarybutylamine(N(C4H9)H2)であること
を特徴とする請求項29に記載の窒化物半導体素子の製造方法。 - 前記所定範囲の温度は、300〜1100℃であり、前記所定範囲の圧力は、10−5〜2000mmHgであること
を特徴とする請求項30に記載の窒化物半導体素子の製造方法。
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