KR101144466B1 - 질화물 반도체 결정층을 제조하기 위한 방법 - Google Patents
질화물 반도체 결정층을 제조하기 위한 방법 Download PDFInfo
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- KR101144466B1 KR101144466B1 KR1020110018626A KR20110018626A KR101144466B1 KR 101144466 B1 KR101144466 B1 KR 101144466B1 KR 1020110018626 A KR1020110018626 A KR 1020110018626A KR 20110018626 A KR20110018626 A KR 20110018626A KR 101144466 B1 KR101144466 B1 KR 101144466B1
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- 239000013078 crystal Substances 0.000 title claims abstract description 527
- 239000004065 semiconductor Substances 0.000 title claims abstract description 315
- 150000004767 nitrides Chemical class 0.000 title claims abstract description 256
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 45
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 251
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- 239000010410 layer Substances 0.000 description 597
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 84
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- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical group [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 description 18
- XCZXGTMEAKBVPV-UHFFFAOYSA-N trimethylgallium Chemical compound C[Ga](C)C XCZXGTMEAKBVPV-UHFFFAOYSA-N 0.000 description 17
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- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 7
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- 239000002184 metal Substances 0.000 description 7
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
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- 125000004429 atom Chemical group 0.000 description 5
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- PMHQVHHXPFUNSP-UHFFFAOYSA-M copper(1+);methylsulfanylmethane;bromide Chemical compound Br[Cu].CSC PMHQVHHXPFUNSP-UHFFFAOYSA-M 0.000 description 2
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- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 2
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- 229910052581 Si3N4 Inorganic materials 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 238000010306 acid treatment Methods 0.000 description 1
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- 230000001747 exhibiting effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 229910021478 group 5 element Inorganic materials 0.000 description 1
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000001451 molecular beam epitaxy Methods 0.000 description 1
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- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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Abstract
Description
도 2는 제1 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 흐름도;
도 3a 및 3b는 제1 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 4a 및 4b는 제1 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 5a 및 5b는 제1 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법에 의해 제작되는 반도체 장치의 구성을 도시하는 개략 측면도;
도 6a 및 6b는 제2 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 7a 내지 7c는 제2 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 8a 내지 8d는 제3 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 9a 및 9b는 제3 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 10a 내지 10c는 제3 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법을 도시하는 개략 측면도;
도 11은 제1 실시예에 따른 질화물 반도체 결정층을 제조하기 위한 방법을 통해 결정층의 상태를 중간까지 도시하는 전자 현미경 사진;
도 12는 제1 실시예에 따른 질화물 반도체 결정층을 제조하기 위한 방법을 통해 결정층의 상태를 중간까지 도시하는 전자 현미경 사진;
도 13은 제1 실시예에 따른 질화물 반도체 결정층을 제조하기 위한 방법을 통해 결정층의 상태를 중간까지 도시하는 그래프;
도 14는 제1 실시예에 따른 질화물 반도체 결정층을 제조하기 위한 방법의 결정층의 상태를 도시하는 전자 현미경 사진;
도 15는 기준 예시의 질화물 반도체 결정층을 제조하기 위한 방법의 결정층의 상태를 도시하는 전자 현미경 사진;
도 16a 내지 16d는 질화물 반도체 결정층의 특성들을 도시하는 분석 결과들을 나타내는 이미지;
도 17a 및 17b는 제1 실시예에 따라 질화물 반도체 결정층을 제조하기 위한 방법의 결정층의 분석 결과들을 도시하는 도면; 및
도 18a 및 18b는 기준 예시의 결정층의 분석 결과들을 도시하는 도면.
30: 중간층
40: 초박형 실리콘 결정층
50: 질화물 반도체 결정층
Claims (20)
- 질화물 반도체 결정층을 제조하기 위한 방법으로서,
기체 상에 제공되는 실리콘 결정층 상에 제1 두께를 갖는 질화물 반도체 결정층을 형성하는 단계를 포함하고,
상기 실리콘 결정층은 상기 질화물 반도체 결정층을 형성하는 단계 이전에 상기 제1 두께보다 얇은 제2 두께를 가지며,
상기 질화물 반도체 결정층을 형성하는 단계는, 상기 실리콘 결정층의 적어도 일부를 상기 질화물 반도체 결정층으로 통합하여 상기 실리콘 결정층의 두께를 상기 제2 두께로부터 감소하는 단계를 포함하는, 질화물 반도체 결정층 제조 방법. - 제1항에 있어서, 상기 실리콘 결정층 내에서 전위(dislocation) 도입에 의한 플라스틱 변형이 발생되는, 질화물 반도체 결정층 제조 방법.
- 제2항에 있어서, 상기 전위 도입에 수반되는 상기 플라스틱 변형은 상기 실리콘 결정층 내로 3족 원소를 확산시킴으로써 촉진되는, 질화물 반도체 결정층 제조 방법.
- 제1항에 있어서, 상기 제2 두께는 50 나노미터 이하인, 질화물 반도체 결정층 제조 방법.
- 제1항에 있어서, 상기 질화물 반도체 결정층을 형성하는 단계는,
상기 실리콘 층 위에 상기 질화물 반도체 결정층의 제1 부분을 제1 온도에서 형성하는 단계 및
상기 질화물 반도체 결정층의 제2 부분을 상기 제1 온도보다 높은 제2 온도에서 상기 제1 부분 상에 형성하는 단계를 포함하는, 질화물 반도체 결정층 제조 방법. - 제5항에 있어서, 상기 제1 부분의 두께는 상기 제2 부분의 두께보다 얇은, 질화물 반도체 결정층 제조 방법.
- 제5항에 있어서, 상기 제1 부분을 형성하는 단계 이전에 상기 실리콘 결정층 상에 3족 원소를 포함하는 층이 적층되는, 질화물 반도체 결정층 제조 방법.
- 제1항에 있어서, 상기 기체는 표면에 산화 실리콘 막이 형성되어 있는 실리콘 기판 또는 실리카 유리 기판인, 질화물 반도체 결정층 제조 방법.
- 제1항에 있어서,
상기 실리콘 결정층은 상기 실리콘 결정층의 층 면(face)에 평행한 평면에서 0.5 mm 이상 10 mm 이하의 특성 길이를 갖는 섬 형상들로 분할되고,
상기 질화물 반도체 결정층을 형성하는 단계는 상기 분할된 실리콘 결정층 상에 상기 질화물 반도체 결정층을 형성하는 단계를 포함하는, 질화물 반도체 결정층 제조 방법. - 제1항에 있어서, 상기 기체의 측 상의 제1 영역에서 상기 질화물 반도체 결정층의 실리콘 농도는 상기 제1 영역보다 상기 기체에서 더 먼 제2 영역에서 상기 질화물 반도체 결정층의 실리콘 농도보다 높은, 질화물 반도체 결정층 제조 방법.
- 제1항에 있어서, 상기 실리콘 결정층의 결정면의 배향은 (111)면인, 질화물 반도체 결정층 제조 방법.
- 제1항에 있어서, 상기 질화물 반도체 결정층을 형성하는 단계는 상기 실리콘 결정층 전부를 상기 질화물 반도체 결정층으로 통합시키는, 질화물 반도체 결정층 제조 방법.
- 제12항에 있어서, 상기 실리콘 결정층 내에서 전위 도입에 의한 플라스틱 변형이 발생되는, 질화물 반도체 결정층 제조 방법.
- 제13항에 있어서, 상기 전위 도입에 수반되는 상기 플라스틱 변형은 상기 실리콘 결정층 내로 3족 원소를 확산시킴으로써 촉진되는, 질화물 반도체 결정층 제조 방법.
- 제12항에 있어서, 상기 제2 두께는 50 나노미터 이하인, 질화물 반도체 결정층 제조 방법.
- 질화물 반도체 결정층을 제조하기 위한 방법으로서,
기체 상에 제공되는 결정층 상에 제1 두께를 갖는 질화물 반도체 결정층을 형성하는 단계를 포함하고,
상기 결정층은 상기 질화물 반도체 결정층을 형성하는 단계 이전에 상기 제1 두께보다 얇은 제2 두께를 가지며,
상기 질화물 반도체 결정층을 형성하는 단계는, 상기 결정층의 적어도 일부를 상기 질화물 반도체 결정층으로 통합하여 상기 결정층의 두께를 상기 제2 두께로부터 감소하는 단계를 포함하는, 질화물 반도체 결정층 제조 방법. - 제16항에 있어서, 상기 결정층 내에서 전위 도입에 의한 플라스틱 변형이 발생되는, 질화물 반도체 결정층 제조 방법.
- 제17항에 있어서, 상기 전위 도입에 수반되는 상기 플라스틱 변형은 상기 결정층으로 3족 원소를 확산시킴으로써 촉진되는, 질화물 반도체 결정층 제조 방법.
- 제16항에 있어서,
상기 결정층은 상기 결정층의 층 면(face)에 평행한 평면에서 0.5 mm 이상 10 mm 이하의 특성 길이를 갖는 섬 형상들로 분할되고,
상기 질화물 반도체 결정층을 형성하는 단계는 상기 분할된 결정층 상에 상기 질화물 반도체 결정층을 형성하는 단계를 포함하는, 질화물 반도체 결정층 제조 방법. - 제16항에 있어서, 상기 기체는 실리콘 기판인, 질화물 반도체 결정층 제조 방법.
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