Degradation physics of II-VI blue-green laser diodes and LEDs

Shun-Lien Chuang; Akira Ishibashi; Norikazu Nakayama; S. Taniguchi; Kazushi Nakano

doi:10.1117/12.316715

7 July 1998 Degradation physics of II-VI blue-green laser diodes and LEDs

Shun-Lien Chuang, Akira Ishibashi, Norikazu Nakayama, S. Taniguchi, Kazushi Nakano

Proceedings Volume 3283, Physics and Simulation of Optoelectronic Devices VI; (1998) https://doi.org/10.1117/12.316715
Event: Optoelectronics and High-Power Lasers and Applications, 1998, San Jose, CA, United States

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.

Citation Download Citation

Shun-Lien Chuang, Akira Ishibashi, Norikazu Nakayama, S. Taniguchi, and Kazushi Nakano "Degradation physics of II-VI blue-green laser diodes and LEDs", Proc. SPIE 3283, Physics and Simulation of Optoelectronic Devices VI, (7 July 1998); https://doi.org/10.1117/12.316715

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