JP2015097265A - Iii−v族材料の選択エリア成長用のエピ基板およびiii−v族材料をシリコン基板上に製造する方法 - Google Patents
Iii−v族材料の選択エリア成長用のエピ基板およびiii−v族材料をシリコン基板上に製造する方法 Download PDFInfo
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- 239000000758 substrate Substances 0.000 title claims abstract description 98
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 91
- 239000010703 silicon Substances 0.000 title claims abstract description 91
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 84
- 239000000463 material Substances 0.000 title claims abstract description 58
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000000126 substance Substances 0.000 claims abstract description 11
- 238000005498 polishing Methods 0.000 claims abstract description 9
- 238000000059 patterning Methods 0.000 claims abstract description 7
- 239000004065 semiconductor Substances 0.000 claims description 36
- 238000004519 manufacturing process Methods 0.000 claims description 23
- -1 compound nitride Chemical class 0.000 claims description 13
- 239000003989 dielectric material Substances 0.000 claims description 7
- 229910052738 indium Inorganic materials 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 4
- 229910052814 silicon oxide Inorganic materials 0.000 claims description 4
- 239000013078 crystal Substances 0.000 abstract description 9
- 230000007547 defect Effects 0.000 abstract description 6
- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 17
- 150000004767 nitrides Chemical class 0.000 description 12
- 230000015572 biosynthetic process Effects 0.000 description 8
- 229910002601 GaN Inorganic materials 0.000 description 7
- 230000004048 modification Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 6
- 229910052581 Si3N4 Inorganic materials 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
- RNQKDQAVIXDKAG-UHFFFAOYSA-N aluminum gallium Chemical compound [Al].[Ga] RNQKDQAVIXDKAG-UHFFFAOYSA-N 0.000 description 2
- 239000002178 crystalline material Substances 0.000 description 2
- 238000002955 isolation Methods 0.000 description 2
- 238000007517 polishing process Methods 0.000 description 2
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 1
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000000407 epitaxy Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000005468 ion implantation Methods 0.000 description 1
- 238000000608 laser ablation Methods 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000000116 mitigating effect Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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Abstract
【解決手段】シリコン基板(101)が用意され、第1層(104)がシリコン基板(101)の上に形成され、第1層(104)は、シリコン基板(101)を選択的に露出するようにパターン化される。III−V族材料層(103)が、パターン化した第1層(104)およびシリコン基板(101)の露出したエリアの上に形成される。III−V族材料層(103)は、化学機械研磨(CMP)を施して第1層(104)を露出させ、これによりシリコン基板(101)の上にデバイス層を成長させるのに適した複数のエリア(106)を形成する。
【選択図】図3
Description
本発明の方法に従って形成されたデバイスは、近接するポケットから伝搬する転位の消滅に起因して、より良好な結晶品質を有する。本発明の方法によってもたらされる半導体層の隔離は、ウエハ反り、層クラック、ウエハ破損を低減する。
Claims (13)
- III−V族材料・オン・シリコン基板を製造する方法であって、
シリコン基板(101)を用意するステップと、
第1層(104)をシリコン基板(101)の上に形成するステップと、
第1層(104)をパターン化して、シリコン基板(101)を露出させるステップと、
III−V族材料層(103)を、パターン化した第1層(104)および露出したシリコン基板(101)の上に形成するステップと、
III−V族材料層(103)に化学機械研磨(CMP)を施して、第1層(103)を露出させ、これによりシリコン基板(101)の上にデバイス層を成長するための複数のエリア(106)を形成するステップと、を含む方法。 - 第1層(104)の材料は、誘電体材料である請求項1記載の方法。
- 第1層(104)は、酸化シリコン層である請求項2記載の方法。
- III−V族材料層(103)は、III−V族化合物窒化物の層を少なくとも含む請求項1〜3のいずれかに記載の方法。
- III−V族化合物窒化物は、GaxNy,AlzGaxNyおよびInpAlqGaxNy(p,q,x,yは、p+q+x+y=1を満たす実数)からなるグループから選択される請求項4記載の方法。
- III−V族材料層(103)は、III−V族化合物窒化物からなる多重層を含み、
CMP後に、III−V族材料層の露出した層は、GaxNy層である請求項5記載の方法。 - シリコン基板(101)上に形成されたAlNバッファ層(102)をさらに含む請求項1記載の方法。
- AlNバッファ層(102)は、第1層(104)をパターン化した後、露出したシリコン基板(101)上に形成される請求項7記載の方法。
- 半導体層(107)を複数のエリア(106)に成長させて、半導体層が、隣接する半導体層と合体するまで続行し、これによりデバイス層を形成するステップをさらに含む請求項1記載の方法。
- 半導体層は、GaxNy,AlzGaxNyおよびInpAlqGaxNy(p,q,x,yは、p+q+x+y=1を満たす実数)からなるグループから選択される請求項9記載の方法。
- III−V族材料・オン・シリコン基板であって、
シリコン基板(101)と、
シリコン基板(101)の上にある、パターン化された第1層(104)と、
パターン化された第1層(104)内で、露出したシリコン基板(101)上にあるIII−V族材料層(103)と、を備える基板。 - III−V族材料層(103)は、III−V族化合物窒化物からなる少なくとも1つの層を含む請求項11記載の基板。
- III−V族化合物窒化物は、GaxNy,AlzGaxNyおよびInpAlqGaxNy(p,q,x,yは、p+q+x+y=1を満たす実数)からなるグループから選択される請求項12記載の基板。
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2014
- 2014-10-15 EP EP20140189000 patent/EP2869331A1/en not_active Withdrawn
- 2014-10-22 US US14/520,763 patent/US20150115277A1/en not_active Abandoned
- 2014-10-23 JP JP2014216493A patent/JP2015097265A/ja active Pending
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US20150115277A1 (en) | 2015-04-30 |
EP2869331A1 (en) | 2015-05-06 |
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