KR20030016380A - 질화물 반도체 소자 - Google Patents
질화물 반도체 소자 Download PDFInfo
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- KR20030016380A KR20030016380A KR10-2003-7000185A KR20037000185A KR20030016380A KR 20030016380 A KR20030016380 A KR 20030016380A KR 20037000185 A KR20037000185 A KR 20037000185A KR 20030016380 A KR20030016380 A KR 20030016380A
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Abstract
Description
Claims (23)
- In을 포함하는 질화물 반도체로 이루어지는 우물층과, 질화물 반도체로 이루어지는 장벽층을 가지는 양자우물구조의 활성층을, p형 질화물 반도체층과, n형 질화물 반도체층으로 끼우는 구조를 질화물 반도체 소자에 있어서,상기 활성층이 상기 장벽층으로서, 상기 p형 질화물 반도체층의 가장 가까운 위치에 배치된 제 1 장벽층과, 이 제 1 장벽층과는 다른 제 2 장벽층을 가짐과 동시에,상기 제 1 장벽층이 실질적으로 n형 불순물을 포함하지 않고, 상기 제 2 장벽층이 n형 불순물을 포함하는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 제 1 장벽층의 막두께가, 제 2 장벽층의 막두께보다도 큰 것을 특징으로 하는 질화물 반도체.
- 제 1 항에 있어서,상기 활성층이 L개(L2)의 상기 장벽층을 가지며,상기 n형 질화물 반도체층의 가장 가까운 위치에 배치된 장벽층을 장벽층 B1, 이 장벽층 B1으로부터 상기 p형 질화물 반도체를 향하여 세어서 i번째(i=1, 2, 3 …L)의 장벽층을 장벽층 Bi으로 했을 때에,i=1에서 i=n(1<n<L)까지의 장벽층 B1가 n형 불순물을 포함하는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 제 1 장벽층을 제외한 모든 장벽층이 n형 불순물을 포함하는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 제 1 장벽층이 상기 활성층의 가장 외측에 배치되어 있는 것을 특징으로 하는 질화물 반도체 소자.
- 제 7 항에 있어서,상기 제 2 장벽층이, 상기 활성층내의 상기 n형 질화물 반도체층에 가까운 가장 외측의 배치된 것을 특징으로 하는 질화물 반도체 소자.
- 제 6 항에 있어서,상기 제 1 장벽층의 막두께가, 상기 제 2 장벽층의 막두께와 거의 같은 것을 특징으로 하는 질화물 반도체 소자.
- 제 7 항에 있어서,상기 활성층이 2이상의 우물층을 가지며, 이 우물층과 우물층 사이에 제 3 장벽층을 가짐과 동시에,상기 제 3 장벽층의 막두께가, 상기 제 1 p측 장벽층 및 상기 제 2 n측 장벽층의 막두께보다도 작은 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 활성층내의 적어도 하나의 우물층이 40Å이상의 막두께를 가지는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 제 1 장벽층이, p형 불순물을 가지는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 제 1 장벽층이 p형, 불순물을 5 ×1016㎝-3이상 1 ×1019㎝-3이하 포함하는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 제 1 장벽층이, p형 또는 i형인 것을 특징으로 하는 질화물 반도체 소자.
- 제 12 항에 있어서,상기 제 1 장벽층이, 불순물을 도프하지 않고 성장시킨 것으로서, 상기 p형 질화물 반도체층으로부터의 확산에 의해 p형 불순물을 포함하는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 n형 질화물 반도체층, 상기 활성층 및 상기 p형 질화물 반도체층의 순서로 적층된 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 p형 질화물 반도체층은, 평균 혼성결정비 x가 0<x0.05의 알루미늄(Al)을 포함하는 질화물 반도체층으로 이루어지는 상부 클래드층을 가지고, 상기 n형 질화물 반도체층이, 평균 혼성결정비 x가 0<x0.05의 알루미늄을 포함하는 질화물 반도체로 이루어지는 하부 클래드층을 가지며, 레이저 소자 구조를 가지는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 p형 질화물 반도체층중에, 활성층에 인접하여 제 1 p형 질화물 반도체층을 가지며, 이 제 1 p형 질화물 반도체층이 Al을 포함하는 질화물 반도체로 이루어지는 것을 특징으로 하는 질화물 반도체 소자.
- 제 16 항에 있어서,상기 제 1 p형 질화물 반도체층이, 상기 제 1 p형 질화물 반도체층의 가장 가까운 장벽층에 접하여 설치되고, 상기 활성층중의 장벽층보다도 높은 농도의 p형 불순물을 도프하여 성장하는 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 활성층에 있어서, 우물층의 수가 1이상 3이하의 범위인 것을 특징으로 하는 질화물 반도체 소자.
- 상기 제 2 장벽층이 우물층에 끼워져서 배치되고, 상기 우물층과 제 2 장벽층과의 막두께비 Rt(=[우물층의 막두께/[장벽층의 막두께])가 0.5Rt3의 범위인 것을 특징으로 하는 질화물 반도체 소자.
- 상기 우물층의 막두께 dw가, 40Ådw100Å의 범위이고, 상기 제 2 장벽층의 막두께 db가, db40Å의 범위인 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 p형 질화물 반도체층은, Al을 포함하는 질화물 반도체로 이루어지는 상부 클래드층을 가지며, 상기 n형 질화물 반도체층으로 이루어지는 하부 클래드층을 가지며, 그 상부 클래드층의 Al 평균 혼성결정비가 하부 클래드층보다도 큰 것을 특징으로 하는 질화물 반도체 소자.
- 제 21 항에 있어서,상기 상부 클래드층의 Al 평균 혼성결정비 x가 0<x0.1의 범위인 것을 특징으로 하는 질화물 반도체 소자.
- 제 1 항에 있어서,상기 p형 질화물 반도체층이, 상기 활성층에 접하여 전자가둠층이 되는 제 1 p형 질화물 반도체층을 가지고, 활성층이 제 1 p형 질화물 반도체층으로부터의 거리 dB가 100Å이상 400Å이하의 범위인 우물층을 가지며, 그 거리 dB내에 제 1 장벽층을 가지는 것을 특징으로 하는 질화물 반도체 소자.
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KR100935379B1 (ko) * | 2007-12-18 | 2010-01-08 | 서울옵토디바이스주식회사 | 다중양자웰 구조의 활성 영역을 갖는 발광 다이오드 |
KR101051327B1 (ko) * | 2010-06-09 | 2011-07-22 | 우리엘에스티 주식회사 | 3족 질화물 반도체 발광소자 |
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