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Proceedings Paper

Degradation physics of II-VI blue-green laser diodes and LEDs
Author(s): Shun-Lien Chuang; Akira Ishibashi; Norikazu Nakayama; S. Taniguchi; Kazushi Nakano
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Paper Abstract

A unified theoretical model for the degradation of II-VI blue-green laser diodes and light-emitting diodes (LEDs) is presented. The model is based on the recombination-enhanced defect generation. Based on this model and the corresponding rate equations for the laser diodes and LEDs, we show a general picture to explain the aging behaviors of both the optical output power of the LEDs under a constant current aging condition and the increase of the operation current of laser diodes under constant optical power operation. We found a universal curve for the optical output decay of the II-VI LEDs as a function of the aging time. The power decay is associated with the increase of defect density caused by electron-hole recombination enhancement. Our model also explains very well the increase of the operation current of laser diodes under the constant optical output aging condition.

Paper Details

Date Published: 7 July 1998
PDF: 10 pages
Proc. SPIE 3283, Physics and Simulation of Optoelectronic Devices VI, (7 July 1998); doi: 10.1117/12.316715
Show Author Affiliations
Shun-Lien Chuang, Univ. of Illinois/Urbana-Champaign (United States)
Akira Ishibashi, Sony Corp. Research Ctr. (Japan)
Norikazu Nakayama, Sony Corp. Research Ctr. (Japan)
S. Taniguchi, Sony Corp. Research Ctr. (Japan)
Kazushi Nakano, Sony Corp. Research Ctr. (Japan)


Published in SPIE Proceedings Vol. 3283:
Physics and Simulation of Optoelectronic Devices VI
Marek Osinski; Peter Blood; Akira Ishibashi, Editor(s)

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