KR100884288B1 - 질화물 반도체, 질화물 반도체를 이용한 발광 소자, 발광다이오드, 레이저 소자 및 램프, 및 그 제조 방법 - Google Patents
질화물 반도체, 질화물 반도체를 이용한 발광 소자, 발광다이오드, 레이저 소자 및 램프, 및 그 제조 방법 Download PDFInfo
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Abstract
Description
상기 질화물 반도체 발광 소자에 리드 선을 설치하는 공정을 포함하는 것을 특징으로 하는 발광 다이오드의 제조 방법.
상기 질화물 반도체 발광 소자에 리드 선을 설치하는 공정을 포함하는 것을 특징으로 하는 레이저 소자의 제조 방법.
상기 질화물 반도체 발광 소자에 형광체를 갖는 커버를 설치하는 공정을 포함하는 것을 특징으로 하는 램프의 제조 방법.
Claims (30)
- 질화물 반도체로 형성되고 순차적으로 기판상에 적층되는 n형층, 발광층, 및 p형층을 상기 순서로 포함하고,상기 발광층은 우물층이 상기 우물층의 밴드갭보다 넓은 밴드갭을 갖는 장벽층에 의해 샌드위칭되는 양자 우물 구조를 갖고,각 장벽층은 상기 우물층의 성장 온도보다 높은 온도에서 성장된 장벽층(C) 및 상기 장벽층(C)의 성장 온도보다 낮은 온도에서 성장된 장벽층(E)을 포함하고, 상기 장벽층(C)의 성장 온도와 상기 장벽층(E)의 성장 온도 간의 차이가 50℃ 이상 300℃ 이하이고, 상기 장벽층(C)은 상기 장벽층(E)에 대하여 상기 기판측에 배치되는 것을 특징으로 하는 질화물 반도체 제품.
- 제 1 항에 있어서,상기 질화물 반도체는 식 InxAlyGa1 -x- yN (0≤ x <1, 0≤ y <1, 0≤x + y <1)으로 표시되는 것을 특징으로 하는 질화물 반도체 제품.
- 제 1 항에 있어서,상기 장벽층 중 하나 이상은 상기 장벽층(C)의 성장 온도보다 낮은 온도에서 성장된 장벽층(A)을 더 포함하고, 상기 장벽층(A, C, 및 E)은 A, C, E의 순서로 적층되는 것을 특징으로 하는 질화물 반도체 제품.
- 제 3 항에 있어서,상기 장벽층 중 하나 이상은 상기 장벽층(C)의 성장 온도보다 낮은 온도에서 성장된 장벽층(B)을 포함하고, 상기 장벽층(B)은 상기 장벽층(A)과 (C) 사이에 개재되는 것을 특징으로 하는 질화물 반도체 제품.
- 제 1 항에 있어서,상기 장벽층 중 하나 이상은 상기 장벽층(C)의 성장 온도보다 낮은 온도에서 성장된 장벽층(D)을 포함하고, 상기 장벽층(D)은 장벽층(C)과 (E) 사이에 개재되는 것을 특징으로 하는 질화물 반도체 제품.
- 제 1 항에 있어서,상기 장벽층(C)의 성장 온도와 상기 우물층의 성장 온도간의 차이는 50℃ 이상 300℃ 이하인 것을 특징으로 하는 질화물 반도체 제품.
- 삭제
- 제 3 항에 있어서,상기 장벽층(C)의 성장 온도와 상기 장벽층(A)의 성장 온도간의 차이는 50℃ 이상 300℃ 이하인 것을 특징으로 하는 질화물 반도체 제품.
- 제 1 항에 있어서,상기 우물층의 성장 온도는 600℃ 내지 1,000℃의 범위내에 있는 것을 특징으로 하는 질화물 반도체 제품.
- 제 2 항에 있어서,상기 우물층은 GaInN으로 이루어지는 것을 특징으로 하는 질화물 반도체 제품.
- 제 2 항에 있어서,상기 장벽층은 GaInN 또는 GaN으로 이루어지는 것을 특징으로 하는 질화물 반도체 제품.
- 제 1 항에 있어서,상기 우물층 및 상기 장벽층으로부터 선택되는 하나 이상의 층은 n형 도펀트를 포함하는 것을 특징으로 하는 질화물 반도체 제품.
- 제 12 항에 있어서,상기 n형 도펀트는 Si인 것을 특징으로 하는 질화물 반도체 제품.
- 제 12 항에 있어서,상기 n형 도펀트는 Ge인 것을 특징으로 하는 질화물 반도체 제품.
- 제 12 항에 있어서,상기 우물층 및 상기 장벽층으로부터 선택되는 하나 이상의 층 내의 상기 n형 도펀트 농도는 주기적으로 변화하는 것을 특징으로 하는 질화물 반도체 제품.
- 제 15 항에 있어서,상기 n형 도펀트를 포함하는 층과 비도핑 층은 교대로 적층되어 있는 것을 특징으로 하는 질화물 반도체 제품.
- 제 15 항에 있어서,상기 n형 도펀트 농도에서의 높은 층은 낮은 층보다 두껍지 않은 것을 특징으로 하는 질화물 반도체 제품.
- 제 12 항에 있어서,상기 n형 도펀트를 포함하는 층은 1×1016㎝-3 내지 5×1019㎝-3의 n형 도펀트 농도를 갖는 특징으로 하는 질화물 반도체 제품.
- 제 1 항 내지 제 6 항, 제 8 항 내지 제 18 항 중 어느 한 항에 기재된 질화물 반도체 제품의 n형층에 음전극이 제공되고, 상기 질화물 반도체 제품의 p형층에 양전극이 제공된 것을 특징으로 하는 질화물 반도체 발광 소자.
- 상기 제 1 항 내지 제 6 항, 제 8 항 내지 제 18 항 중 어느 한 항에 기재된 질화물 반도체 제품을 포함하는 발광 다이오드.
- 상기 제 1 항 내지 제 6 항, 제 8 항 내지 제 18 항 어느 한 항에 기재된 질화물 반도체 제품을 포함하는 레이저 소자.
- 상기 제 1 항 내지 제 6 항, 제 8 항 내지 제 18 항 중 어느 한 항에 기재된 질화물 반도체 제품을 포함하는 램프.
- 기판상에 질화물 반도체 n형층, 양자 우물 구조의 질화물 반도체 발광층, 및 질화물 반도체 p형층을 순차 적층하여, 양자 우물 구조를 갖는 질화물 반도체 제품을 제조하는 방법에 있어서:우물층을 성장시키는 공정;성장 온도를 상승시키는 공정;상기 우물층의 성장 온도보다 높은 상승된 온도에서 양자 우물 구조의 장벽층을 성장시키는 공정;상기 성장 온도를 하강시키는 공정; 및상기 장벽층의 성장 온도보다 낮은 하강된 온도에서 상기 장벽층을 더 성장시키는 공정을 포함하는 것을 특징으로 하는 질화물 반도체 제품의 제조 방법.
- 제 23 항에 있어서,상기 성장 온도를 상승시키기 전에 상기 장벽층을 성장시키는 공정을 더 포함하는 것을 특징으로 하는 질화물 반도체의 제조 방법.
- 제 23 항 또는 제 24 항에 있어서,상기 장벽층의 성장은 상기 성장 온도를 상승시키는 공정 및 상기 성장 온도를 하강시키는 공정 중 어느 하나의 공정에서 수행되는 것을 특징으로 하는 질화물 반도체 제품의 제조 방법.
- 제 23 항 또는 제 24 항에 있어서,상기 장벽층은 n형 도펀트를 함유하고 있는 것을 특징으로 하는 질화물 반도체 제품의 제조 방법.
- 상기 제 1 항 내지 제 6 항, 제 8 항 내지 제 18 항 중 어느 한 항에 기재된 질화물 반도체 제품의 발광층 및 p형층의 일부를 제거하여 n형층을 노출시키는 공정;상기 노출된 n형층에 음전극을 제공하는 공정; 및상기 p형층에 양전극을 제공하는 공정으로 이루어지는 것을 특징으로 하는 질화물 반도체 발광 소자의 제조 방법.
- 상기 제 19 항에 기재된 질화물 반도체 발광 소자를 제조하는 공정; 및상기 질화물 반도체 발광소자에 리드 선을 설치하는 공정을 포함하는 것을 특징으로 하는 발광 다이오드의 제조 방법.
- 상기 제 19 항에 기재된 질화물 반도체 발광 소자를 제조하는 공정; 및상기 질화물 반도체 발광소자에 리드 선을 설치하는 공정을 포함하는 것을 특징으로 하는 레이저 소자의 제조 방법.
- 상기 제 19 항에 기재된 질화물 반도체 발광 소자를 제조하는 공정; 및상기 질화물 반도체 발광소자에 형광체를 갖는 커버를 설치하는 공정을 포함하는 것을 특징으로 하는 램프의 제조 방법.
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