Semiconductor light emitting device

Patent metadata

Field	Value
Publication number	US-9024293-B2
Application number	US-201414155038-A
Country	US
Kind code	B2
Filing date	Jan 14, 2014
Priority date	Feb 16, 2010
Publication date	May 5, 2015
Grant date	May 5, 2015

Abstract

According to one embodiment, a semiconductor light emitting device includes an n-type semiconductor layer, a p-type semiconductor layer, and a light emitting portion. The light emitting portion is provided between the semiconductor layers and includes barrier layers and well layers alternately stacked. An n-side end well layer which is closest to the n-type semiconductor layer contains In wn Ga 1-wn N and has a layer thickness t wn . An n-side end barrier layer which is closest to the n-type semiconductor layer contains In bn Ga 1-bn N and has a layer thickness t bn . A p-side end well layer which is closest to the p-type semiconductor layer contains In wp Ga 1-wp N and has a layer thickness t wp . A p-side end barrier layer which is closest to the p-type semiconductor contains In bp Ga 1-bp N and has a layer thickness t bp . A value of (wp×t wp +bp×t bp )/(t wp +t bp ) is higher than (wn×t wn +bn×t bn )/(t wn +t bn ) and is not higher than 5 times (wn×t wn +bn×t bn )/(t wn +t bn ).

First claim

The invention claimed is:

1. A semiconductor light emitting device, comprising:
an n-type semiconductor layer containing a nitride semiconductor;
a p-type semiconductor layer containing a nitride semiconductor; and
a light emitting portion provided between the n-type semiconductor layer and the p-type semiconductor layer, the light emitting portion including a plurality of barrier layers and a plurality of well layers, the plurality of barrier layers and the plurality of well…

Assignees

• Toshiba Kk

Inventors

• Tachibana Koichi
• Hikosaka Toshiki
• Kimura Shigeya
• Nago Hajime
• Nunoue Shinya

Classifications

• H10H20/8252

  Electricity · mapped topic

• H10H20/825

  Electricity · mapped topic

• H10H20/812 Primary

  Electricity · mapped topic

• H01L33/06 Primary

  Electricity · mapped topic

• H01L33/325

  Electricity · mapped topic