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Proceedings Paper

Experimental and numerical study on the optical properties of yellow-green AlGaInP light-emitting diodes
Author(s): Man-Fang Huang; PinHui Liu; J. S. Liu; Yen-Kuang Kuo; YaLien Huang; Yuni Chang; HsuChing Huang; KuoKai Horng; JihYuan Chang
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Paper Abstract

AlGaInP LEDs with emission wavelengths near 570 nm are important in liquid crystal display backlight application. However, high brightness in this spectral region is difficult to achieve due to the reduction of the radiation efficiency in the high-aluminum-containing active region and the smaller band offset between the active and the cladding region. In order to improve the performance of the 570-nm AlGaInP LEDs, we have grown several wafers with different structure designs and studied the optical properties as functions of the device temperature and the excitation power experimentally with a photoluminescence measurement system and numerically with a commercial Latsip simulation program. Specifically, important factors such as the barrier height in quantum wells, the tensile strain barrier cladding next to the MQW region, the compensated strain in MQW, and the disturbed Bragg reflector are investigated. Good agreement between the experimental and numerical results is observed.

Paper Details

Date Published: 11 July 2000
PDF: 8 pages
Proc. SPIE 4078, Optoelectronic Materials and Devices II, (11 July 2000); doi: 10.1117/12.392193
Show Author Affiliations
Man-Fang Huang, Visual Photonics Epitaxy Co. Ltd. (Taiwan)
PinHui Liu, Visual Photonics Epitaxy Co. Ltd. (Taiwan)
J. S. Liu, Visual Photonics Epitaxy Co. Ltd. (Taiwan)
Yen-Kuang Kuo, National Changhua Univ. of Education (Taiwan)
YaLien Huang, National Changhua Univ. of Education (Taiwan)
Yuni Chang, National Changhua Univ. of Education (Taiwan)
HsuChing Huang, National Changhua Univ. of Education (Taiwan)
KuoKai Horng, National Changhua Univ. of Education (Taiwan)
JihYuan Chang, National Changhua Univ. of Education (Taiwan)


Published in SPIE Proceedings Vol. 4078:
Optoelectronic Materials and Devices II
Yan-Kuin Su; Pallab Bhattacharya, Editor(s)

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