JP2020502785A - Zno基板上にウルツ鉱型構造を有する半導体ヘテロ構造 - Google Patents
Zno基板上にウルツ鉱型構造を有する半導体ヘテロ構造 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 70
- 239000004065 semiconductor Substances 0.000 title claims abstract description 29
- 229910052984 zinc sulfide Inorganic materials 0.000 title claims abstract description 27
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims abstract description 111
- 239000011787 zinc oxide Substances 0.000 claims abstract description 55
- 239000000463 material Substances 0.000 claims abstract description 44
- 238000000034 method Methods 0.000 claims abstract description 44
- 239000013078 crystal Substances 0.000 claims abstract description 42
- 238000004519 manufacturing process Methods 0.000 claims abstract description 15
- 230000005693 optoelectronics Effects 0.000 claims abstract description 14
- 238000000151 deposition Methods 0.000 claims abstract description 13
- 238000000407 epitaxy Methods 0.000 claims abstract description 6
- 239000010410 layer Substances 0.000 claims description 75
- 150000004767 nitrides Chemical class 0.000 claims description 12
- 229910052733 gallium Inorganic materials 0.000 claims description 9
- 239000011701 zinc Substances 0.000 claims description 9
- 229910052738 indium Inorganic materials 0.000 claims description 7
- 229910000979 O alloy Inorganic materials 0.000 claims description 5
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 5
- 239000001301 oxygen Substances 0.000 claims description 5
- 229910052760 oxygen Inorganic materials 0.000 claims description 5
- 229910001199 N alloy Inorganic materials 0.000 claims description 4
- 229910052793 cadmium Inorganic materials 0.000 claims description 4
- 238000001451 molecular beam epitaxy Methods 0.000 claims description 4
- 230000008569 process Effects 0.000 claims description 4
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- 229910002601 GaN Inorganic materials 0.000 description 21
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- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 6
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- 238000010438 heat treatment Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 5
- 229910052594 sapphire Inorganic materials 0.000 description 5
- 239000010980 sapphire Substances 0.000 description 5
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- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 239000003929 acidic solution Substances 0.000 description 3
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- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 2
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 2
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- 230000015572 biosynthetic process Effects 0.000 description 2
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910017083 AlN Inorganic materials 0.000 description 1
- 229910004298 SiO 2 Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
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- 230000000873 masking effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 230000003287 optical effect 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
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Abstract
Description
1)<0001>軸に沿って非常に高い、所謂「自発的」分極成分に至るウルツ鉱型構造内の正および負電荷の重心間の不一致、および
2)所謂「圧電」分極成分に至る様々な材料の格子定数の不整合に関係する歪み、を起源とする。
−J.M.Chauveau,M.Teisseire,H.Kim−Chauveau,C.Deparis,C.Morhain,B.Vinter,“Benefits of homoepitaxy on the properties of nonpolar(Zn,Mg)O/ZnO quantum wells on a−plane ZnO substrates”,Appl.Phys.Lett.97(2010)081903;
−J.M.Chauveau,Y.Xia,I.Ben Taazaet−Belgacem,M.Teisseire,B.Roland,M.Nemoz,J.Brault,B.Damilano,M.Leroux,B.Vinter,“Built−in electric field in ZnO based semipolar quantum wells grown on(101−2)ZnO substrates”,J Appl.Phys.Lett.103(2013)262104。
−単結晶酸化亜鉛基板の表面をメサに構造化する工程と;
−構造化表面の上にウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層をエピタキシャル堆積する(前記ヘテロ構造を形成する)工程と、を含む。
−前記メサは、10〜1000μmの小さな横方向寸法と100nm以上の高さとを有し得る。
−前記構造化工程は化学的エッチングにより行われ得る。
−本方法はまた、600℃以上の温度における酸素ストリーム下でアニールすることにより前記基板の構造化表面を熱処理する工程であって、ウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層をエピタキシャル堆積する前記工程の前に行われる工程を含み得る。
−ウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層をエピタキシャル堆積する前記工程は分子線エピタキシーにより行われ得る。
−本方法はまた、構造化表面以外の前記基板の少なくとも1つの表面上に薄い保護層を蒸着する工程であって、ウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層をエピタキシャル堆積する前記工程の前に行われる工程を含み得る。
−構造化表面は無極性または半極性配向を有し得る。
−ウルツ鉱型の結晶構造を有する半導体材料の前記層または各前記層は、2価窒化物、2価酸化物、Zn(Mg,Cd)O合金、およびAl(Ga,In)N合金から選択される少なくとも1つの材料を含み得る。
−上述の方法によりウルツ鉱型の結晶構造を有する少なくとも1つの半導体材料のヘテロ構造を製作する工程と;
−基板の構造化表面のメサに対応する前記ヘテロ構造の領域から始まる前記電子または光電子装置を製作する工程と、を含む。
−前記メサは10〜1000μmの小さな横方向寸法と100nm以上の高さとを有し得る。
−前記基板の構造化表面は無極性または半極性配向を有し得る。
−ウルツ鉱型の結晶構造を有する半導体材料の前記層または各前記層は、2価窒化物、2価酸化物、Zn(Mg,Cd)O合金、およびAl(Ga,In)N合金から選択された少なくとも1つの材料を含み得る。
Claims (13)
- ウルツ鉱型の結晶構造を有する半導体材料で作られたヘテロ構造を製作する方法において、
−酸化亜鉛の単結晶基板(S)の表面(SD)を、平坦面を有するメサ(M)に構造化する工程であって、前記メサは前記基板の前記表面に平行な平坦上面を有する、工程と;
−前記構造化表面の前記メサの前記上面上に前記ヘテロ構造を直接形成することによりウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層(CA)をエピタキシーにより堆積する工程と、を含む方法。 - 前記メサは10〜1000μmの小さな横方向寸法および100nm以上高さを有する、請求項1に記載の方法。
- 前記構造化工程は化学的エッチングにより行われる、請求項1乃至2のいずれか一項に記載の方法。
- 600℃以上の温度における酸素ストリーム(FO)下でアニールすることにより前記基板の前記構造化表面を熱処理する工程であって、ウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層をエピタキシャル堆積する前記工程の前に行われる工程も含む請求項1乃至3のいずれか一項に記載の方法。
- ウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層(CA)をエピタキシャル堆積する前記工程は分子線エピタキシーにより行われる、請求項1乃至4のいずれか一項に記載の方法。
- 前記構造化表面以外の前記基板の少なくとも1つの表面上に薄い保護層(CP)を蒸着する工程であって、ウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層をエピタキシャル堆積する前記工程の前に行われる工程も含む請求項1乃至5のいずれか一項に記載の方法。
- 前記構造化表面は無極性または半極性配向を有する、請求項1乃至6のいずれか一項に記載の方法。
- ウルツ鉱型の結晶構造を有する半導体材料の前記層または各前記層は、2価窒化物、2価酸化物、Zn(Mg,Cd)O合金、およびAl(Ga,In)N合金から選択された少なくとも1つの材料を含む、請求項1乃至7のいずれか一項に記載の方法。
- 少なくとも1つの電子または光電子装置を製作する方法であって、
−請求項1乃至8のいずれか一項に記載の方法によりウルツ鉱型の結晶構造を有する少なくとも1つの半導体材料内にヘテロ構造を製作する工程と;
−前記基板の前記構造化表面のメサに対応する前記ヘテロ構造の領域から始まる前記電子または光電子装置を製作する工程と、を含む方法。 - 酸化亜鉛の単結晶基板(S)の表面(SD)の上部に直接堆積されるウルツ鉱型の結晶構造を有する半導体材料の少なくとも1つの層(CA)を含むヘテロ構造であって、前記表面は前記基板の前記表面に平行な平坦上面を有するメサ(M)として構造化され、平坦面を有することを特徴とするヘテロ構造。
- 前記メサは10〜1000μmの小さな横方向寸法および100nm以上高さを有する、請求項10に記載のヘテロ構造。
- 前記基板の前記構造化表面は無極性または半極性配向を有する、請求項10または11に記載のヘテロ構造。
- ウルツ鉱型の結晶構造を有する半導体材料の前記層または各前記層は、2価窒化物、2価酸化物、Zn(Mg,Cd)O合金、およびAl(Ga,In)N合金から選択された少なくとも1つの材料を含む、請求項10乃至12のいずれか一項に記載のヘテロ構造。
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