Role of the electron blocking layer in the graded-index separate confinement heterostructure nitride laser diodes

被引:9
作者
Bojarska, Agata [1 ]
Goss, Jakub [1 ]
Stanczyk, Szymon [1 ,2 ]
Makarowa, Irina [1 ]
Schiavon, Dario [1 ,2 ]
Czernecki, Robert [1 ,2 ]
Suski, Tadeusz [1 ]
Perlin, Piotr [1 ,2 ]
机构
[1] Unipress, Inst High Pressure Phys, Sokolowska 29-37, PL-01142 Warsaw, Poland
[2] TopGaN Ltd, Sokolowska 29-37, PL-01142 Warsaw, Poland
关键词
Nitride laser diode; Electron blocking layer; Superlattice;
D O I
10.1016/j.spmi.2018.02.016
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
In this work, we investigate the role of the electron blocking layer (EBL) in laser diodes based on a graded index separate confinement heterostructure. We compare two sets of devices with very different EBL aluminum composition (3% and 12%) and design (graded and superlattice). The results of electro-optical characterization of these laser diodes reveal surprisingly modest role of electron blocking layer composition in determination of the threshold current and the differential efficiency values. However, EBL structure influences the operating voltage, which is decreased for devices with lower EBL and superlattice EBL. We observe also the differences in the thermal stability of devices characteristic temperature is lower for lasers with 3% Al in EBL. (C) 2018 Elsevier Ltd. All rights reserved.
引用
收藏
页码:114 / 121
页数:8
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