Broadband blue superluminescent light-emitting diodes based on GaN

被引:66
|
作者
Feltin, E. [1 ]
Castiglia, A. [1 ]
Cosendey, G. [1 ]
Sulmoni, L. [1 ]
Carlin, J. -F. [1 ]
Grandjean, N. [1 ]
Rossetti, M. [2 ]
Dorsaz, J. [2 ]
Laino, V. [2 ]
Duelk, M. [2 ]
Velez, C. [2 ]
机构
[1] Ecole Polytech Fed Lausanne, IPEQ, CH-1015 Lausanne, Switzerland
[2] EXALOS AG, CH-8952 Schlieren, Switzerland
基金
瑞士国家科学基金会;
关键词
aluminium compounds; current density; epitaxial layers; gallium compounds; III-V semiconductors; indium compounds; semiconductor quantum wells; superluminescent diodes; wide band gap semiconductors; HIGH-POWER;
D O I
10.1063/1.3202786
中图分类号
O59 [应用物理学];
学科分类号
摘要
We report on the achievement of III-nitride blue superluminescent light-emitting diodes on GaN substrates. The epitaxial structure includes an active region made of In(0.12)Ga(0.88)N quantum wells in a GaN/AlGaN waveguide. Superluminescence under cw operation is observed at room temperature for a current of 130 mA and a current density of 8 kA/cm(2). The central emission wavelength is 420 nm and the emission bandwidth is similar to 5 nm in the superluminescence regime. A peak optical output power of 100 mW is obtained at 630 mA under pulsed operation and an average power of 10 mW is achieved at a duty cycle of 20%.
引用
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页数:3
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