KR20100017917A - Ⅲ족 질화물 반도체 발광 소자 및 그의 제조 방법, 및 램프 - Google Patents
Ⅲ족 질화물 반도체 발광 소자 및 그의 제조 방법, 및 램프 Download PDFInfo
- Publication number
- KR20100017917A KR20100017917A KR1020097026968A KR20097026968A KR20100017917A KR 20100017917 A KR20100017917 A KR 20100017917A KR 1020097026968 A KR1020097026968 A KR 1020097026968A KR 20097026968 A KR20097026968 A KR 20097026968A KR 20100017917 A KR20100017917 A KR 20100017917A
- Authority
- KR
- South Korea
- Prior art keywords
- layer
- iii nitride
- nitride semiconductor
- group iii
- light emitting
- Prior art date
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
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- B82—NANOTECHNOLOGY
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02436—Intermediate layers between substrates and deposited layers
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/025—Physical imperfections, e.g. particular concentration or distribution of impurities
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- H—ELECTRICITY
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- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
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- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/12—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a stress relaxation structure, e.g. buffer layer
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Abstract
Description
Claims (33)
- 기판 상에 적어도 III족 질화물 화합물을 포함하는 중간층이 적층되고, 상기 중간층 상에 하지층을 구비하는 n형 반도체층, 발광층 및 p형 반도체층이 순차적으로 적층되어 이루어지는 III족 질화물 반도체 발광 소자이며,상기 중간층의 결정 조직 중에는, 상기 중간층의 X선 로킹 커브를 피크 분리 방법에 의해, 반값폭이 720arcsec 이상으로 되는 브로드 성분과, 내로우 성분으로 분리한 경우의 상기 브로드 성분에 대응하는 무배향 성분이 포함되고,상기 중간층의 결정 조직에 있어서의 상기 무배향 성분의 비율이, 상기 중간층의 면적비로 30% 이하로 되어 있는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제1항에 있어서, 상기 중간층 상에 적층되는, 상기 하지층의 (0002)면의 X선 로킹 커브 반값폭이 50arcsec 이하로 되어 있는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제1항 또는 제2항에 있어서, 상기 기판이 사파이어 기판인 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제3항에 있어서, 상기 중간층이, 상기 사파이어 기판의 c면 상에 형성되어 있는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제1항 또는 제2항에 있어서, 상기 중간층의 막 두께가 20 내지 40nm의 범위로 되어 있는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제1항 또는 제2항에 있어서, 상기 중간층이 Al을 함유하는 조성을 포함하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제6항에 있어서, 상기 중간층이 AlN을 포함하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제1항 또는 제2항에 있어서, 상기 하지층이 GaN계 화합물 반도체를 포함하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 제8항에 있어서, 상기 하지층이 AlxGa1-xN(0≤x≤1)을 포함하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자.
- 기판 상에 적어도 III족 질화물 화합물을 포함하는 중간층을 적층하고, 상기 중간층 상에 하지층을 구비하는 n형 반도체층, 발광층 및 p형 반도체층을 순차적으 로 적층하는 III족 질화물 반도체 발광 소자의 제조 방법이며,상기 기판에 대하여 플라즈마 처리를 행하는 전처리 공정과, 상기 전처리 공정에 이어서, 상기 기판 상에 상기 중간층을 스퍼터링법에 의해 형성하는 스퍼터링 공정이 구비되어 있고,상기 스퍼터링 공정은, 상기 중간층의 X선 로킹 커브를 피크 분리 방법을 이용하여 반값폭이 720arcsec 이상이며 상기 중간층의 결정 조직에 포함되는 무배향 성분에 대응하는 브로드 성분과, 내로우 성분으로 분리한 경우의 상기 중간층의 결정 조직에 있어서의 상기 무배향 성분의 비율을, 중간층의 면적비로 30% 이하로 하여 상기 중간층을 형성하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항에 있어서, 상기 전처리 공정은, 질소 함유 가스를 챔버 내에 유통시켜 행하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제11항에 있어서, 상기 전처리 공정은, 챔버 내에 유통시키는 상기 질소 함유 가스 중의 질소 가스의 비가 50% 이상인 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 전처리 공정은, 챔버 내의 압력을 1Pa 이상으로 하여 행하는 것을 특징으로 하는 III족 질화물 반도체 발 광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 전처리 공정은, 처리 시간을 30초 이하로 하여 행하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 전처리 공정은, 상기 기판의 온도를 25 내지 1000℃의 범위로 하여 행하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 전처리 공정 및 상기 스퍼터링 공정을 동일한 챔버 내에서 행하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 전처리 공정에 있어서의 플라즈마 처리가 역 스퍼터링인 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제17항에 있어서, 상기 전처리 공정은, 고주파를 사용한 전원에 의해 플라즈마를 발생시킴으로써, 역 스퍼터링을 행하는 것을 특징으로 하는 III족 질화물 반 도체 발광 소자의 제조 방법.
- 제18항에 있어서, 상기 전처리 공정은, 고주파를 사용한 전원에 의해 질소 플라즈마를 발생시킴으로써, 역 스퍼터링을 행하는 것을 포함하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제18항 또는 제19항에 있어서, 상기 전처리 공정은, 상기 기판에 대하여 0.1kW 이하의 고주파 파워를 인가하여 역 스퍼터링을 행하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 스퍼터링 공정은, 상기 중간층을 상기 기판 표면의 적어도 90%를 덮도록 형성하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 스퍼터링 공정은, V족 원소를 함유하는 원료를 사용하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 스퍼터링 공정은, 상기 중간층을 V족 원소를 함유하는 원료를 리액터 내에 유통시키는 리액티브 스퍼터링 법에 의해 성막하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제22항에 있어서, 상기 V족 원소가 질소인 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제22항에 있어서, 상기 V족 원소를 포함하는 원료로서 암모니아를 사용하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 스퍼터링 공정은, 상기 중간층을 RF 스퍼터링법에 의해 성막하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제26항에 있어서, 상기 스퍼터링 공정은, 상기 중간층을 RF 스퍼터링법을 이용하여, 캐소드의 마그네트를 이동시키면서 성막하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 스퍼터링 공정은, 상기 중간층을 상기 기판의 온도를 400 내지 800℃의 범위로 하여 형성하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 하지층을 MOCVD법에 의해 상기 중간층 상에 성막하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 하지층을 리액티브 스퍼터링법에 의해 상기 중간층 상에 성막하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 있어서, 상기 기판의 온도를 300 내지 1200℃로 하여, 상기 하지층을 형성하는 것을 특징으로 하는 III족 질화물 반도체 발광 소자의 제조 방법.
- 제10항 내지 제12항 중 어느 한 항에 기재된 제조 방법으로 얻어지는 III족 질화물 반도체 발광 소자.
- 제1항, 제2항, 제10항, 제11항 및 제12항 중 어느 한 항에 기재된 III족 질화물 반도체 발광 소자가 사용되어 이루어지는 램프.
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