In the industrial use of ultraviolet light (UV), for instance in the curing of paint and adhesives or in water treatment applications, continuous monitoring of the light intensity is useful or even mandatory. New, long-term stable detectors on the basis of aluminum gallium nitride (AlGaN) have advantages over traditionally used solutions: among others, they show no degradation under irradiation with high UV intensities.
- Intrinsic insensitivity to visible light (»visible blind«)
- Direct integration of filters into the detector chip: active region adjustable, e.g. in the
UV-A 320 – 370 nm,
UV-B 280 – 320 nm,
UV-C 240 – 280 nm
- Very low dark current and high quantum efficiency (>50 %)