JP6106771B2 - 半導体構造の製造方法 - Google Patents
半導体構造の製造方法 Download PDFInfo
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- JP6106771B2 JP6106771B2 JP2016004264A JP2016004264A JP6106771B2 JP 6106771 B2 JP6106771 B2 JP 6106771B2 JP 2016004264 A JP2016004264 A JP 2016004264A JP 2016004264 A JP2016004264 A JP 2016004264A JP 6106771 B2 JP6106771 B2 JP 6106771B2
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- 239000004065 semiconductor Substances 0.000 title claims description 48
- 238000004519 manufacturing process Methods 0.000 title claims description 14
- 239000010410 layer Substances 0.000 claims description 187
- 239000000463 material Substances 0.000 claims description 98
- 239000003989 dielectric material Substances 0.000 claims description 72
- 239000002243 precursor Substances 0.000 claims description 58
- 239000002356 single layer Substances 0.000 claims description 39
- 239000013078 crystal Substances 0.000 claims description 27
- 238000000151 deposition Methods 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 18
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 15
- 229910052710 silicon Inorganic materials 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 15
- 239000010703 silicon Substances 0.000 claims description 14
- 230000007704 transition Effects 0.000 claims description 9
- 229910018072 Al 2 O 3 Inorganic materials 0.000 claims description 4
- 230000005533 two-dimensional electron gas Effects 0.000 claims description 2
- 238000000231 atomic layer deposition Methods 0.000 claims 2
- 230000008021 deposition Effects 0.000 description 17
- 229910002601 GaN Inorganic materials 0.000 description 12
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 12
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 9
- 238000004140 cleaning Methods 0.000 description 8
- 238000005137 deposition process Methods 0.000 description 7
- 230000010287 polarization Effects 0.000 description 7
- 229910052782 aluminium Inorganic materials 0.000 description 5
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910004298 SiO 2 Inorganic materials 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000011065 in-situ storage Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- JLTRXTDYQLMHGR-UHFFFAOYSA-N trimethylaluminium Chemical compound C[Al](C)C JLTRXTDYQLMHGR-UHFFFAOYSA-N 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- 238000003631 wet chemical etching Methods 0.000 description 3
- GPXJNWSHGFTCBW-UHFFFAOYSA-N Indium phosphide Chemical compound [In]#P GPXJNWSHGFTCBW-UHFFFAOYSA-N 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- MDPILPRLPQYEEN-UHFFFAOYSA-N aluminium arsenide Chemical compound [As]#[Al] MDPILPRLPQYEEN-UHFFFAOYSA-N 0.000 description 2
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 230000003247 decreasing effect Effects 0.000 description 2
- 229910001873 dinitrogen Inorganic materials 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000001351 cycling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 238000010849 ion bombardment Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910044991 metal oxide Inorganic materials 0.000 description 1
- 150000004706 metal oxides Chemical class 0.000 description 1
- 239000011368 organic material Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 235000012239 silicon dioxide Nutrition 0.000 description 1
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- Insulated Gate Type Field-Effect Transistor (AREA)
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Description
表1は、誘電体の下にある材料層の抵抗が減少したことを示し、これは半導体の導電率の向上を意味する。2DEG濃度の増加は、堆積したAlNの分極効果及びその結晶性を示唆する。2DEG濃度の増加は、分極材料の厚さの増加を示す。
Claims (7)
- 第1のIII−V族材料半導体層上に誘電材料の1つの層を含む半導体構造の製造方法であって、
前記第1のIII−V族材料半導体層を形成する工程と、
前記第1のIII−V族材料半導体層上に、前記誘電材料の1つの層を形成する工程と、
を備え、
前記誘電材料の1つの層を形成する工程は、
前記第1のIII−V族材料半導体層上に、原子層堆積により第1前駆体の少なくとも1つの第1モノレイヤーを堆積する工程と、
前記少なくとも1つの第1モノレイヤー上に、原子層堆積により第2前駆体の少なくとも1つの第2モノレイヤーを堆積する工程と、
を有し、
前記誘電材料の1つの層は、前記誘電材料の1つの層の下面に位置する第1領域を含み、
前記第1領域は、前記誘電材料の1つの層と前記第1のIII−V族材料半導体層との間の界面に位置し、
前記誘電材料の1つの層内で、前記誘電材料の1つの層の格子定数と前記第1のIII−V族材料半導体層の格子定数との不整合は、前記第1領域を、界面領域を介して前記誘電材料の1つの層の上面に隣接する第2領域に転移させ、前記上面は前記下面の反対にあり、
前記第1領域は結晶構造を有し、前記第2領域は非晶質構造を有し、前記界面領域は、結晶と非晶質とが混ざった状態を有する、半導体構造の製造方法。 - 前記第1のIII−V族材料半導体層と前記誘電材料の1つの層との間において第2のIII−V族材料半導体層を形成する工程と、
前記第1のIII−V族材料半導体層と前記第2のIII−V族材料半導体層との界面に2次元電子ガス(2DEG)領域を形成する工程と、
をさらに備えた、請求項1記載の半導体構造の製造方法。 - シリコン基板上に前記第1のIII−V族材料半導体層を形成する工程をさらに備えた、請求項1記載の半導体構造の製造方法。
- 前記第1モノレイヤーを堆積する前記工程および前記第2モノレイヤーを堆積する前記工程は、200℃と500℃との間の温度で行われる、請求項1記載の半導体構造の製造方法。
- 前記誘電材料の1つの層が望ましい厚さに達するまで、前記第1モノレイヤーを堆積する前記工程および前記第2モノレイヤーを堆積する前記工程を繰り返す工程をさらに含む、請求項1記載の半導体構造の製造方法。
- 前記第1領域から前記第2領域への転移は、前記誘電材料の1つの層の所定の厚さで生じる、請求項1記載の半導体構造の製造方法。
- 前記半導体構造は、前記誘電材料の1つの層と、Al 2 O 3 を含む層と、を含むトランジスタのゲート誘電体である、請求項1〜6のいずれか1つに記載の半導体構造の製造方法。
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