25 September 2014 Tri-wavelength single output Infrared LED based on QW area selective intermixing
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A monolithic multi-wavelength LED based on selective dielectric cap intermixing is investigated experimentally. The proposed LED is fabricated on a QW structure and it has an independent wavelength intensity power control for each wavelength. The device consists of three regions that have been intermixed to varying extents of SiO2 thicknesses then annealed at 975°C for 20s.The regions are blue shifted by amounts that depend on the thickness of a SiO2 capping film. Contact stripes are then evaporated on each region as intensity power control to emit its respective wavelength. Experimental results showed an independently tri-wavelength emission of 797nm, 780nm and 775nm.
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Abdullah J. Zakariya, Abdullah J. Zakariya, Bassam Alfeeli, Bassam Alfeeli, "Tri-wavelength single output Infrared LED based on QW area selective intermixing", Proc. SPIE 9190, Thirteenth International Conference on Solid State Lighting, 919014 (25 September 2014); doi: 10.1117/12.2061557; https://doi.org/10.1117/12.2061557

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