On spectral and thermal behaviors of AlGaInP light-emitting diodes under pulse-width modulation

被引：42

作者：

Manninen, Pasi

Orrevetelainen, Pasi

机构：

[1] Helsinki Univ Technol, Metrol Res Inst, FI-02015 Helsinki, Finland

[2] Helsinki Univ Technol, Lighting Lab, FI-02015 Helsinki, Finland

来源：

APPLIED PHYSICS LETTERS | 2007年 / 91卷 / 18期

关键词：

12;

D O I：

10.1063/1.2805198

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Behavior of the emission spectrum, junction temperature, and charge carrier temperature of low-power AlGaInP light-emitting diodes (LEDs) with different colors under pulse-width-modulation (PWM) dimming is investigated. The blueshift of the peak wavelength and the bandwidth narrowing in the emission spectra of the studied LEDs with shortening pulse are found. A linear relation of the junction temperature and carrier temperature of the studied LEDs to their duty cycle is detected. Perceivable changes in color of AlGaInP LEDs under the PWM scheme are observed. (C) 2007 American Institute of Physics.

引用

页数：3

共 12 条

[1]

[Anonymous], 2006, LIGHT EMITTING DIODE, DOI DOI 10.1017/CBO9780511790546

[2] Determination of junction temperature in AlGaInP/GaAs light emitting diodes by self-excited photoluminescence signal [J].