Experimental study demonstrates optical detection of nitrogen oxide using 226 nm deep ultraviolet LEDs, indicating potential for compact environmental sensors.
In this paper, we will present the development of a compact LED-based optical gas sensing system in the ultraviolet-C spectral region. This includes the design of the LED heterostructure emitting near 226 nm, the development of an LED chip, and the implementation into a gas sensing system capable of detecting nitrogen oxide concentrations in the ppm range.
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Mehnke et al. (2016) studied this question.
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