Internal quantum efficiency of high-brightness AlGaInP light-emitting devices

被引:44
|
作者
Altieri, P [1 ]
Jaeger, A [1 ]
Windisch, R [1 ]
Linder, N [1 ]
Stauss, P [1 ]
Oberschmid, R [1 ]
Streubel, K [1 ]
机构
[1] OSRAM Opto Semicond GmbH, D-93055 Regensburg, Germany
关键词
D O I
10.1063/1.2085308
中图分类号
O59 [应用物理学];
学科分类号
摘要
The internal quantum efficiency of (AlxGa1-x)(0.5) In0.5P light-emitting devices (LEDs), with an emission wavelength ranging from 650 to 560 nm, is determined by means of a model that takes into account the radiative and nonradiative recombination in the active layer, the diffusive leakage of carriers into the confining layers, and the influence of photon recycling on the light extraction efficiency. The evaluation is based on measurements of the external quantum efficiency of the LEDs as a function of the operating current and temperature. The analysis provides the wavelength dependence of both the nonradiative recombination as well as the carrier leakage.
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页数:3
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