KR20160106700A - 산화물 소결체, 스퍼터링용 타겟 및 그것을 이용하여 얻어지는 산화물 반도체 박막 - Google Patents
산화물 소결체, 스퍼터링용 타겟 및 그것을 이용하여 얻어지는 산화물 반도체 박막 Download PDFInfo
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- KR20160106700A KR20160106700A KR1020167021624A KR20167021624A KR20160106700A KR 20160106700 A KR20160106700 A KR 20160106700A KR 1020167021624 A KR1020167021624 A KR 1020167021624A KR 20167021624 A KR20167021624 A KR 20167021624A KR 20160106700 A KR20160106700 A KR 20160106700A
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- Prior art keywords
- oxide
- phase
- sintered body
- thin film
- gallium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000010409 thin film Substances 0.000 title claims abstract description 97
- 239000004065 semiconductor Substances 0.000 title claims abstract description 60
- 238000005477 sputtering target Methods 0.000 title claims abstract description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 109
- 229910052733 gallium Inorganic materials 0.000 claims abstract description 79
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims abstract description 61
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 55
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 claims abstract description 40
- 229910052738 indium Inorganic materials 0.000 claims abstract description 35
- 238000004544 sputter deposition Methods 0.000 claims abstract description 30
- 239000011701 zinc Substances 0.000 claims abstract description 24
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims abstract description 23
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 20
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 238000005245 sintering Methods 0.000 claims description 48
- 229910052760 oxygen Inorganic materials 0.000 claims description 29
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 27
- 239000001301 oxygen Substances 0.000 claims description 27
- 238000000034 method Methods 0.000 claims description 19
- 239000012298 atmosphere Substances 0.000 claims description 18
- 238000010438 heat treatment Methods 0.000 claims description 15
- 239000000758 substrate Substances 0.000 claims description 14
- 238000002441 X-ray diffraction Methods 0.000 claims description 12
- 229910052984 zinc sulfide Inorganic materials 0.000 claims description 5
- 238000012545 processing Methods 0.000 claims description 4
- 230000001590 oxidative effect Effects 0.000 claims description 3
- 239000012071 phase Substances 0.000 description 115
- 239000000843 powder Substances 0.000 description 63
- 229910002601 GaN Inorganic materials 0.000 description 28
- 239000010408 film Substances 0.000 description 27
- 239000002994 raw material Substances 0.000 description 22
- 230000015572 biosynthetic process Effects 0.000 description 18
- 230000000052 comparative effect Effects 0.000 description 18
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 17
- 229910003437 indium oxide Inorganic materials 0.000 description 14
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 14
- 239000000203 mixture Substances 0.000 description 14
- 229910052751 metal Inorganic materials 0.000 description 12
- 239000002184 metal Substances 0.000 description 12
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 10
- AJNVQOSZGJRYEI-UHFFFAOYSA-N digallium;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Ga+3].[Ga+3] AJNVQOSZGJRYEI-UHFFFAOYSA-N 0.000 description 10
- 229910001195 gallium oxide Inorganic materials 0.000 description 10
- 239000002245 particle Substances 0.000 description 10
- 238000002156 mixing Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 238000011156 evaluation Methods 0.000 description 7
- 239000004973 liquid crystal related substance Substances 0.000 description 7
- 238000004519 manufacturing process Methods 0.000 description 7
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 239000002253 acid Substances 0.000 description 6
- 238000000151 deposition Methods 0.000 description 6
- 239000007789 gas Substances 0.000 description 6
- 150000002500 ions Chemical class 0.000 description 6
- NWAIGJYBQQYSPW-UHFFFAOYSA-N azanylidyneindigane Chemical compound [In]#N NWAIGJYBQQYSPW-UHFFFAOYSA-N 0.000 description 5
- 238000002425 crystallisation Methods 0.000 description 5
- 230000008025 crystallization Effects 0.000 description 5
- 238000001039 wet etching Methods 0.000 description 5
- 239000011787 zinc oxide Substances 0.000 description 5
- 230000008021 deposition Effects 0.000 description 4
- 238000000005 dynamic secondary ion mass spectrometry Methods 0.000 description 4
- 238000004993 emission spectroscopy Methods 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 150000004767 nitrides Chemical class 0.000 description 4
- 239000011347 resin Substances 0.000 description 4
- 229920005989 resin Polymers 0.000 description 4
- 238000002834 transmittance Methods 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000011230 binding agent Substances 0.000 description 3
- 238000001312 dry etching Methods 0.000 description 3
- 230000031700 light absorption Effects 0.000 description 3
- 108091006149 Electron carriers Proteins 0.000 description 2
- 238000003991 Rietveld refinement Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 2
- 229910021417 amorphous silicon Inorganic materials 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 238000001739 density measurement Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 238000002347 injection Methods 0.000 description 2
- 239000007924 injection Substances 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- 239000002002 slurry Substances 0.000 description 2
- 238000007740 vapor deposition Methods 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 230000005355 Hall effect Effects 0.000 description 1
- 206010021143 Hypoxia Diseases 0.000 description 1
- 229910021578 Iron(III) chloride Inorganic materials 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- DAZWMJDZEPDDGO-UHFFFAOYSA-N [O].[O].[Cu] Chemical compound [O].[O].[Cu] DAZWMJDZEPDDGO-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 description 1
- 238000001755 magnetron sputter deposition Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005459 micromachining Methods 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- -1 nitrogen ion Chemical class 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000007614 solvation Methods 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- C04B35/00—Shaped ceramic products characterised by their composition; Ceramics compositions; Processing powders of inorganic compounds preparatory to the manufacturing of ceramic products
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Abstract
이 산화물 소결체는, 인듐 및 갈륨을 산화물로서 함유하고, 질소를 함유하며, 아연을 함유하지 않는다. 갈륨의 함유량이 Ga/(In + Ga) 원자수비로 0.005 이상 0.20 미만이고, GaN상을 실질적으로 포함하지 않는다. 또한, Ga2O3상을 갖지 않는 것이 바람직하다. 이 산화물 소결체를 스퍼터링용 타겟으로 하여 형성한 결정질의 산화물 반도체 박막은, 캐리어 농도 1.0×1018 ㎝-3 이하, 캐리어 이동도 10 ㎝2V-1sec-1 이상이 얻어진다.
Description
Claims (15)
- 인듐 및 갈륨을 산화물로서 함유하고,
상기 갈륨의 함유량이 Ga/(In + Ga) 원자수비로 0.005 이상 0.20 미만이며, 질소를 함유하고, 아연을 함유하지 않는 산화물 소결체로서,
우르츠(wurtzite)형 구조의 GaN상을 실질적으로 포함하지 않는 것을 특징으로 하는 산화물 소결체. - 제1항에 있어서, 상기 갈륨의 함유량이 Ga/(In + Ga) 원자수비로 0.05 이상 0.15 이하인 산화물 소결체.
- 제1항 또는 제2항에 있어서, 질소 농도가 1×1019 atoms/㎝3 이상인 산화물 소결체.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 빅스바이트(bixbyite)형 구조의 In2O3상으로만 구성되는 산화물 소결체.
- 제1항 내지 제3항 중 어느 한 항에 있어서, 빅스바이트형 구조의 In2O3상과, In2O3상 이외의 생성상으로서 β-Ga2O3형 구조의 GaInO3상, 또는 β-Ga2O3형 구조의 GaInO3상과 (Ga,In)2O3상으로 구성되는 산화물 소결체.
- 제5항에 있어서, 하기 식 1로 정의되는 β-Ga2O3형 구조의 GaInO3상의 X선 회절 피크 강도비가 38% 이하의 범위인 산화물 소결체:
100 × I[GaInO3상(111)] / {I[In2O3상(400)] + I[GaInO3상(111)]} [%]····식 1 - 제1항 내지 제6항 중 어느 한 항에 있어서, β-Ga2O3형 구조의 Ga2O3상을 포함하지 않는 산화물 소결체.
- 제1항 내지 제7항 중 어느 한 항에 있어서, 산소 체적분율이 20%를 초과하는 분위기 중에서의 상압 소결법에 의해 소결되는 산화물 소결체.
- 제1항 내지 제8항 중 어느 한 항에 기재된 산화물 소결체를 가공하여 얻어지는 스퍼터링용 타겟.
- 제9항에 기재된 스퍼터링용 타겟을 이용하여 스퍼터링법에 의해 기판 상에 형성된 후, 산화성 분위기에서의 열 처리에 의해 결정화시킨 결정질의 산화물 반도체 박막.
- 인듐과 갈륨을 산화물로서 함유하고, 질소를 함유하며, 아연을 함유하지 않는 결정질의 산화물 반도체 박막으로서,
갈륨의 함유량이 Ga/(In + Ga) 원자수비로 0.005 이상 0.20 미만이고, 또한 질소 농도가 1×1018 atoms/㎝3 이상이며,
캐리어 이동도가 10 ㎝2V- 1sec-1 이상인 결정질의 산화물 반도체 박막. - 제11항에 있어서, 상기 갈륨의 함유량이 Ga/(In + Ga) 원자수비로 0.05 이상 0.15 이하인 결정질의 산화물 반도체 박막.
- 제11항 또는 제12항에 있어서, 빅스바이트형 구조의 In2O3상만으로 이루어지는 결정질의 산화물 반도체 박막.
- 제11항 내지 제13항 중 어느 한 항에 있어서, 우르츠광형 구조의 GaN상을 포함하지 않는 결정질의 산화물 반도체 박막.
- 제11항 내지 제14항 중 어느 한 항에 있어서, 캐리어 농도가 1.0×1018 ㎝-3 이하인 결정질의 산화물 반도체 박막.
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JP2011058011A (ja) | 2009-09-07 | 2011-03-24 | Sumitomo Electric Ind Ltd | 導電性酸化物 |
JP2012253372A (ja) | 2009-09-16 | 2012-12-20 | Semiconductor Energy Lab Co Ltd | 酸化物半導体層 |
JP2012140706A (ja) | 2010-12-17 | 2012-07-26 | Semiconductor Energy Lab Co Ltd | スパッタリングターゲット、スパッタリングターゲットの作製方法および半導体装置の作製方法 |
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JPWO2015137274A1 (ja) | 2017-04-06 |
KR20160106699A (ko) | 2016-09-12 |
TW201538432A (zh) | 2015-10-16 |
TW201536939A (zh) | 2015-10-01 |
CN106103379A (zh) | 2016-11-09 |
TWI548592B (zh) | 2016-09-11 |
US20170076943A1 (en) | 2017-03-16 |
JP6269814B2 (ja) | 2018-01-31 |
KR101861459B1 (ko) | 2018-05-28 |
WO2015137274A1 (ja) | 2015-09-17 |
JP6256592B2 (ja) | 2018-01-10 |
US20170077243A1 (en) | 2017-03-16 |
WO2015137275A1 (ja) | 2015-09-17 |
TWI557246B (zh) | 2016-11-11 |
KR101861458B1 (ko) | 2018-05-28 |
JPWO2015137275A1 (ja) | 2017-04-06 |
CN106132901A (zh) | 2016-11-16 |
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