Based on our key competences in substrateless (Ga,Al)As -technology and other material systems there are LED - chips in the wavelength range of λp = 635 - 1140 nm with high external quantum efficiency and longtime stability. The emission wavelength can be chosen in 5 to 10nm steps and narrow wavelength selections (down to tolerances of ± 3 nm) can be offered. Our (Ga,Al)As technology provides chips without secondary peak.
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