JP2016507450A - 半導体デバイス用基板 - Google Patents
半導体デバイス用基板 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 148
- 239000000758 substrate Substances 0.000 title claims abstract description 123
- 239000000463 material Substances 0.000 claims abstract description 157
- 229910003460 diamond Inorganic materials 0.000 claims abstract description 156
- 239000010432 diamond Substances 0.000 claims abstract description 156
- 150000001875 compounds Chemical class 0.000 claims abstract description 93
- 238000005229 chemical vapour deposition Methods 0.000 claims abstract description 53
- 239000002131 composite material Substances 0.000 claims abstract description 43
- 238000000034 method Methods 0.000 claims abstract description 37
- 238000001816 cooling Methods 0.000 claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 claims abstract description 12
- 239000013078 crystal Substances 0.000 claims description 26
- 235000012431 wafers Nutrition 0.000 description 87
- 229910052710 silicon Inorganic materials 0.000 description 86
- 239000010703 silicon Substances 0.000 description 86
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 83
- 229910004298 SiO 2 Inorganic materials 0.000 description 20
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 17
- 229910010271 silicon carbide Inorganic materials 0.000 description 14
- 238000005336 cracking Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 7
- 229910021421 monocrystalline silicon Inorganic materials 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 4
- 238000005530 etching Methods 0.000 description 4
- 239000010408 film Substances 0.000 description 4
- 238000005498 polishing Methods 0.000 description 4
- 238000001039 wet etching Methods 0.000 description 4
- 229910052581 Si3N4 Inorganic materials 0.000 description 3
- 230000002411 adverse Effects 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 description 3
- 239000002210 silicon-based material Substances 0.000 description 3
- 238000005468 ion implantation 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
- 239000010409 thin film Substances 0.000 description 2
- 229910002704 AlGaN Inorganic materials 0.000 description 1
- JBRZTFJDHDCESZ-UHFFFAOYSA-N AsGa Chemical compound [As]#[Ga] JBRZTFJDHDCESZ-UHFFFAOYSA-N 0.000 description 1
- 229910001218 Gallium arsenide Inorganic materials 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 1
- 230000002596 correlated effect Effects 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000001247 metal acetylides Chemical class 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
- 150000004767 nitrides Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000003870 refractory metal Substances 0.000 description 1
- 150000003376 silicon Chemical class 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
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Abstract
Description
(i)厚さtdの合成ダイヤモンド材料のウェーハを有する弓形に曲げられた基板を用意するステップを含み、弓形に曲げられた基板は、量Bだけ弓形に曲げられていて凸状フェース及び凹状フェースを有し、
(ii)化合物半導体材料の層を化学気相成長法により成長温度Tで弓形に曲げられた基板の凸状フェース上に成長させて弓形に曲げられた基板の凸状フェース上に厚さtscの化合物半導体材料の層を有する弓形に曲げられた複合半導体部品を形成するステップを含み、化合物半導体材料は、成長温度Tと室温との間で合成ダイヤモンド材料よりも高い平均熱膨張率を有し、それにより熱膨張率の不一致ΔTecをもたらし、
(iii)弓形に曲げられた複合半導体部品を冷却するステップを含み、化合物半導体材料の層は、熱膨張率の不一致ΔTecに起因して冷却中、合成ダイヤモンド材料のウェーハ以上に収縮し、
B、td、tsc、及びΔTecは、化合物半導体材料の層が冷却時に、弓形に曲げられた基板の弓形曲がり度を相殺する量だけ収縮するよう選択され、かくして、弓形に曲げられた複合半導体部品が平べったい形態にされ、化合物半導体材料の層は、冷却後、500MPa未満の引張応力を有することを特徴とする方法が提供される。
合成ダイヤモンド材料のウェーハを有する基板と、
基板上の化合物半導体材料の層とを有し、
化合物半導体材料の層は、室温(25℃)で500MPa未満の引張応力を有することを特徴とする複合半導体部品が提供される。
Claims (15)
- 複合半導体部品の作製方法であって、
(i)厚さtdの合成ダイヤモンド材料のウェーハを有する弓形に曲げられた基板を用意するステップを含み、前記弓形に曲げられた基板は、量Bだけ弓形に曲げられていて凸状フェース及び凹状フェースを有し、
(ii)化合物半導体材料の層を化学気相成長法により成長温度Tで前記弓形に曲げられた基板の前記凸状フェース上に成長させて前記弓形に曲げられた基板の前記凸状フェース上に厚さtscの前記化合物半導体材料の層を有する弓形に曲げられた複合半導体部品を形成するステップを含み、前記化合物半導体材料は、前記成長温度Tと室温との間で前記合成ダイヤモンド材料よりも高い平均熱膨張率を有し、それにより熱膨張率の不一致ΔTecをもたらし、
(iii)前記弓形に曲げられた複合半導体部品を冷却するステップを含み、前記化合物半導体材料の層は、前記熱膨張率の不一致ΔTecに起因して冷却中、前記合成ダイヤモンド材料のウェーハ以上に収縮し、
B、td、tsc、及びΔTecは、前記化合物半導体材料の層が冷却時に、前記弓形に曲げられた基板の弓形曲がり度を相殺する量だけ収縮するよう選択され、かくして、前記弓形に曲げられた複合半導体部品が平べったい形態にされ、前記化合物半導体材料の層は、冷却後、500MPa未満の引張応力を有する、方法。 - B、td、tsc、及びΔTecは、冷却後の前記化合物半導体材料の層の引張応力が450MPa未満、400MPa未満、350MPa未満、300MPa未満、250MPa未満、又は210MPa未満であるように選択される、請求項1記載の方法。
- 前記弓形に曲げられた基板は、前記弓形に曲げられた基板の前記凸状フェース上の単結晶材料の層を有し、前記化合物半導体材料の層は、前記単結晶材料の層上で成長する、請求項1又は2記載の方法。
- 前記弓形に曲げられた基板は、前記弓形に曲げられた基板の前記凹状フェース上に、前記成長温度Tと室温との間で前記合成ダイヤモンド材料よりも低い平均熱膨張率を有する材料の層を有し、前記材料の層は、冷却中における前記弓形に曲げられた基板の弓形曲がり度を相殺するのに寄与するよう選択された熱膨張率及び厚さを有する、請求項1〜3のうちいずれか一に記載の方法。
- 前記合成ダイヤモンド材料のウェーハは、600Wm-1K-1、800Wm-1K-1、1000Wm-1K-1、1200Wm-1K-1、又は1400Wm-1K-1以上の熱伝導率を有する、請求項1〜4のうちいずれか一に記載の方法。
- 前記合成ダイヤモンド材料のウェーハの厚さtdは、25μmから450μmまでの範囲、25μmから400μmまでの範囲、25μmから350μmまでの範囲、25μmから300μmまでの範囲、25μmから250μmまでの範囲、25μmから200μmまでの範囲、25μmから150μmまでの範囲、40μmから130μmまでの範囲、又は50μmから100μmまでの範囲内にある、請求項1〜5のうちいずれか一に記載の方法。
- 複合半導体部品であって、
合成ダイヤモンド材料のウェーハを有する基板と、
前記基板上の化合物半導体材料の層とを有し、
前記化合物半導体材料の層は、室温で500MPa未満の引張応力を有する、複合半導体部品。 - 前記化合物半導体材料の層の引張応力は、室温で450MPa未満、400MPa未満、350MPa未満、300MPa未満、250MPa未満、又は210MPa未満である、請求項7記載の複合半導体部品。
- 前記基板は、前記合成ダイヤモンド材料のウェーハと前記化合物半導体材料の層との間に設けられた単結晶材料の層を有する、請求項7又は8記載の複合半導体部品。
- 前記化合物半導体材料の層と前記合成ダイヤモンド材料のウェーハとの間の間隔は、5μm以下、3μm以下、2μm以下、又は1μm以下である、請求項7〜9のうちいずれか一に記載の複合半導体部品。
- 前記基板は、前記化合物半導体材料の層とは反対側に位置する前記合成ダイヤモンド材料のウェーハの面に設けられた材料の層を有し、前記材料の層は、700℃未満の温度で前記合成ダイヤモンド材料よりも低い熱膨張率を有する、請求項7〜10のうちいずれか一に記載の複合半導体部品。
- 前記合成ダイヤモンド材料は、600Wm-1K-1、800Wm-1K-1、1000Wm-1K-1、1200Wm-1K-1、又は1400Wm-1K-1以上の熱伝導率を有する、請求項7〜11のうちいずれか一に記載の複合半導体部品。
- 前記合成ダイヤモンド材料は、25μmから450μmまでの範囲、25μmから400μmまでの範囲、25μmから350μmまでの範囲、25μmから300μmまでの範囲、25μmから250μmまでの範囲、25μmから200μmまでの範囲、25μmから150μmまでの範囲、40μmから130μmまでの範囲、又は50μmから100μmまでの範囲内にある厚さを有する、請求項7〜12のうちいずれか一に記載の複合半導体部品。
- 前記合成ダイヤモンド材料は、単結晶ダイヤモンド材料又は多結晶CVDダイヤモンド材料で作られている、請求項7〜13のうちいずれか一に記載の複合半導体部品。
- 前記合成ダイヤモンド材料のウェーハは、自立型合成ダイヤモンドウェーハ又は支持基板上に合成ダイヤモンド材料の層を有するウェーハから成る、請求項7〜14のうちいずれか一に記載の複合半導体部品。
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